ON-BOARD
INTEGRATED
AC
WITHSTAND
VOLTAGE
TEST
PLATFORM

SF6
OIL-IMMERSED,
NO
PARTIAL
DISCHARGE
VARIABLE
FREQUENCY
SERIES
RESONANT
DEVICE

SF6
OIL-IMMERSED,
NO
PARTIAL
DISCHARGE
TEST
TRANSFORMER

MSXB(F)
SERIES
VARIABLE
FREQUENCY
SERIES
RESONANT
DEVICE

POWER
TEST


EQUIPMENT
MANUAL

CONTENT

01 Ac
Withstand
Voltage
Equipment

02 Transformer
Test

03 High
Voltage
Test
Series

04 Transformer
Test

05 SF6
Gas
Measurement
And
Detector

06 Insulating
Oil
Test
Equipment

07 HV
Switch
Test

08 Secondary
Injection
Relay
Tester


09 CT
PT
Analyzer

10 Battery
Testing
Series

03

17

19

26

32

36

42

43

45

46

FOCUS ON POWER TESTING EOUIPMENT

30 YEARS

Since
its
establishment
in
1996,
it
has
been
committed
to
the
research
and
development
and


production
of
substation
power
testing
equipment
and
transmission
line
testing
equipment,


focusing
on
power
testing
products
and
services.

01

Company
Profile

Quality
You
See.
Service
You
Feel.
Integrity
You
Trust.
Brand
You
Choose

Wuhan
 Musen
 Electric
 Co.,
 Ltd.,
 established
in
 1996,
is
located
in
the
 Wuhan
 East
 Lake
 New


Technology
 Development
 Zone
 (Wuhan
 Optics
 Valley),
 enjoying
 convenient
 transportation.
 As
 an


OEM/ODM
manufacturer
with
30
years
of
experience,
we
specialize
in
the
research,
development,


manufacturing,
 sales,
 and
 service
 of
 high-voltage
 testing
 equipment
 and
 systems.
 Our
 products


include
AC/DC
 high-voltage
testers,
resonance
test
 systems,
frequency
resonance
test
 systems,


transformer
test
equipment,
transformer
dielectric
loss
testers,
and
partial
discharge
high-voltage


testers.
 These
 products
 are
 widely
 used
 in
 power,
 energy,
 transportation,
 metallurgy,
 chemical


industry,
 mining,
 and
 water
 conservancy
 projects.
 All
 products
 comply
 with
 international
 CE


standards
 or
 Chinese
 national
 standards.
 Our
 products
 are
 exported
 worldwide,
 and
 our
 services


are
 recognized
 and
 highly
 praised
 by
 major
 global
 clients.
 Adhering
 to
 the
 12-word
 principle
 of


quality,
excellent
service,
integrity,
and
brand,
we
specialize
in
power
testing
products
and
services


and
have
successfully
partnered
with
nearly
10,000
companies.

02

MS‑GTU GIS
Pressure
Test
Chamber

SCOPE
OF
APPLICATION

MAIN
FEATURES

TECHNICAL
PARAMETERS


The
 100-1200kV
 gas-filled,
 non-partial
 discharge
 combined
 electrical
 test
 device
 is
 suitable
 for


conducting
 insulation
 withstand
 voltage
 tests,
 partial
 discharge
 tests,
 and
 GIS
 transformer
 accuracy


tests
 on
 high-voltage,
 large-capacity
 GIS
 and
 GIL
 power
 equipment.
 It
 is
 an
 essential
 device
 for
 GIS


substations,
 GIS
 and
 GIL
 power
 equipment
 manufacturers,
 and
 manufacturers
 of
 pot
 insulators
 and


insulating
structural
components
for
preventive
and
factory
testing.

Adding
 a
 high-voltage
 bushing
 port
 to
 the
 device
 allows
 high
 voltage
 to
 be
 extracted,
 enabling


various
high-voltage
tests
on
conventional
high-voltage
equipment.

1.
High
voltage
is
fully
enclosed
in
a
shielded
space,
ensuring
safe
and
reliable
testing.

2.
Overall
partial
discharge
can
be
controlled
within
1-3
pcs.

3.
Compact
size
minimizes
space
requirements
and
lightweight
components.

4.
Built-in
high-voltage
disconnect
switch
enables
multi-purpose
use.

5.
Easy
connection꞉
Direct
connection
to
the
test
object
makes
testing
more
convenient.

6.
Rugged
and
durable
structure
capable
of
withstanding
long-distance
transportation.

7.
Reduced
system
power
capacity
requirements

≤5%

≤65K

Rated
capacity 50-2000kVA

Output
voltage 100kV、200kV、250kV、300kV

500kV、750kV、1000kV、1200kV

Runtime ≤5min

Impedance
voltage

Temperature
rise

03

AC
withstand
voltage
equipment

MS‑GTU Variable
Frequency


NO
PD
Withstand
Voltage
Test
System

SCOPE
OF
APPLICATION

MAIN
FEATURES

TECHNICAL
PARAMETERS


1.
High
voltage
is
fully
enclosed
in
a
shielded
space,
ensuring
safe
and
reliable
testing.

2.
Overall
partial
discharge
can
be
controlled
within
5
pc.

3.
Compact
size
minimizes
space
requirements
and
lightweight
components.

4.
Built-in
high-voltage
disconnect
switch
enables
multi-purpose
use.

5.
Easy
connection꞉
Direct
connection
to
the
test
object
makes
testing
more
convenient.

6.
Rugged
and
durable
structure
capable
of
withstanding
long-distance
transportation.

7.
Reduced
system
power
capacity
requirements.

145kV
power
system
GlS
non-partial
discharge
Ac
withstand
voltage
test,
applicable
to


test
 productmaximum
 capacitance
 s
 0.0001jF/bay
 (based
 on
 3
 bays
 +
 9m
 GlS
 internal


busbar
 s
 0.001uF)
 and
 testproduct
 total
 capacitance
 <
 0.004uF,
 test
 frequency
 100Hz,


maximum
test
voltage
235kV.

Output
power 50kW

Input
voltage 380V+10% three-phase; 50Hz

Output
waveform Single-phase
0~350V

Frequency
adjustment
range 20~300Hz

Frequency
Resolution 0.01Hz

Partial
discharge <10pC

04

MS‑GTU GIS
Pressure
Test
Chamber
Project
Case

600kV SF6 gas non-partial discharge test transformer (mouth to mouth) 800kV SF6 gas non-partial discharge test transformer (mouth to mouth)

600kV SF6 gas non-partial discharge test transformer (mouth to mouth) 600kV SF6 gas non-partial discharge test transformer (bushing)

Workshop equipment site Workshop commissioning site

05


MS‑YDQW

In tegra ted

Sf6
Gas
No
Par tial
Discharge


Tes t

Transformer
(bushing )

The
device
integrates
a
transformer,
voltage
divider,
and
protective
resistor,
and
is
equipped
with


safetyprotection
measures
such
as
overcurrent
protection
and
overvoltage
protection
to
ensure
a
safe


and
reliabletest
process.
lt
also
features
a
user-friendly
interface
and
data
display
function,
making
it


easy
for
users
toperform
test
operations
and
view
results.

SCOPE
OF
APPLICATION

TECHNICAL
PARAMETERS


<4%

<9%

Rated
capacity 30-1000kVA Customizable

Rated
voltage AC 100-1200kV

Runtime <5min

No-load
loss

Load
loss

Partial
discharge <5PC

Small
footprint,
less
on-site
wiring

no
fear
of
bumpy
transportation

AC
withstand
voltage
equipment

06

MS‑YDOW

Sf6
Gas
No
PD
Test
Transformer
(bushing)

SCOPE
OF
APPLICATION

TECHNICAL
PARAMETERS


Rated
capacity 50-1200kVA ≤1.5%

Input
voltage 380V

Output
voltage 50-1200kV

accuracy

The
non-partial
discharge
gas-filled
test
transformer
is
designed,
developed
andmanufactured
by


our
 company
 by
 introducing
 and
 absorbing
 advanced
 foreign
 technologieslt
 is
 widely
 used
 in


manufacturers
 of
 electrical
 appliances,
 cables,
 motors,
 transformers,
 mutua谄inductors,
 insulation


materials
 and
 related
 high-voltage
 components,
 as
 well
 as
 high-voltagetest
 laboratories
 in
 power,


scientific
research
and
colleges
and
universities.
lt
can
performpartial
discharge
and
power
frequency


withstand
volt-…
tests
on
their
products.

≤5Pc

Overcurrent and voltage protection alarms

automatically return to zero

Partial
discharge

Protection
function

MAIN
FEATURES

1.
Filled
with
high-insulation
SF6
gas
as
the
insulating
medium;

2.
Compact
size,
light
weight,
high-grade
craftsmanship,
beautiful
appearance,
and
easy


transportation;

3.
Due
to
the
arc-extinguishing
properties
of
SF6
gas
and
its
unique
process
structure,
partial


dischargeis
minimal,
≤5
PC
at
rated
voltage;

4.
The
test
process
is
simple
and
intuitive,
and
the
operation
is
convenient
and
easy;

5.
Effectively
eliminates
noise
interference
from
the
power
supply;

6.
Utilizes
automatic
control
technology,
with
a
high
degree
of
automation
and
strong
antiinterferencecapabilities꞉

7.Utilizes
fast
electronic
protection
devices
for
high
reliability.

07

MS‑YDJW No PD
Test
Transformer

Suitable
 for
 manufacturers
 of
 electrical
 appliances,
 cables,
 motors,
 transformers,
 instrument


transformers,
 insulation
 materials,
 and
 related
 high-voltage
 components,
 this
 tester
 can
 perform


partial
discharge
and
power
frequency
withstand
voltage
tests
on
their
products.

SCOPE
OF
APPLICATION

TECHNICAL
PARAMETERS


<5 PC

Overcurrent and voltage protection

alarms with automatic reset

Rated
capacity 50-1200 kVA (customizable)

Output
Voltage AC 50-1200 kV, including 50, 100,

150, 200, 250, 300, 500, and 1000 kV

Transformation
Ratio
Accuracy <1.5%

Partial
Discharge

Protection

Transformer
Losses No-load
loss꞉
<4%;
Load
loss꞉
<9%

MAIN
FEATURES

1.
Filled
with
high-insulation
transformer
oil
as
the
insulating
medium;

2.
Low
partial
discharge
(≤5
PCD)
at
rated
voltage;

3.
Simple
and
intuitive
test
process,
easy
to
operate;

4.
Effectively
eliminates
power
supply
interference;

5.
Utilizes
automatic
control
technology,
offering
a
high
degree
of
automation
and
strong
antiinterference
capabilities;

6.
Utilizes
fast
electronic
protection
devices
for
high
reliability.

AC
withstand
voltage
equipment

08

Non-PD
 Inductive
 Withstand
 Resonant
 Test
 SystemThis
 device
 utilizes
 a
 linearly
 amplified


variable-frequency
 power
 supply
 with
 reactor-coupled
 compensation,
 making
 it
 suitable
 for


inductive
withstand
voltage
and
partial
discharge
testing
of
power
transformers
of
various
capacities


and
voltage
levels.

SCOPE
OF
APPLICATION

MSWJXZ


No
Partial
Discharge
Induction
Voltage


Withstand
Resonance
Test
System

MAIN
FEATURES

1.
GIS,
circuit
breakers,
transformers,
cables,
insulators,
and
other
equipment
at
voltages
up
to


220kV
can
simultaneously
perform
partial
discharge
(PD)
measurements
during
AC
withstand


voltage
testing.
The
system's
own
partial
discharge
level
is
less
than
10pc,
enabling
precise


measurement
of
the
system's
insulation
condition.

2.
AC
withstand
voltage
testing
can
be
performed
at
a
fully
simulated
power
frequency.
Test


conditions
more
closely
resemble
those
of
the
equipment
in
grid
operation,
providing
a
more


realistic
reflection
of
its
operating
conditions.

3.
In
variable-frequency
mode,
the
frequency
can
vary
from
50Hz
to
300Hz,
adapting
to
higher


capacity
requirements
and
providing
greater
flexibility
in
test
environments
and
operating


conditions.

4.The
non-PD
power
supply
can
also
be
used
as
a
test
power
source
for
long
cables,
suitable
for


AC
withstand
voltage
and
partial
discharge
testing
of
cables.

09

TECHNICAL
PARAMETERS


Rated Inductance 435H

30-300Hz

Rated
Voltage 750kV

Rated
Current 6A

Rated
Output
Power 4500kVA

Resonant
Reactor

Operating
Frequency

Rated
Capacitance

1) System Operating Low Pressure 3MPa±1MPa

2) System Operating Medium Pressure 8MPa±1MPa

3) System Operating High Pressure 16MPa±1MPa

MAIN
FEATURES

1.
On-board
Mobile
Integrated
Platform꞉
The
entire
750kV
series
resonance
test
system
is
highly


integrated
into
a
dedicated
vehicle,
enabling
flexible
deployment
of
testing
capabilities.

2.
Hydraulic
Accumulation
and
Reduction
System꞉
Core
components
(such
as
reactors)
are


automatically
raised
and
lowered
via
an
on-board
voltage
platform,
eliminating
lifting
and
manual


handling,
significantly
improving
efficiency
and
safety.

3.
Rapid
On-site
Deployment꞉
Testing
begins
immediately
after
the
hydraulic
outriggers
are


leveled,
eliminating
complex
lifting
procedures
and
significantly
reducing
preparation
time.

4.
Fully
Automated
Test
Process꞉
Automatic
tuning
locks
the
resonance
point,
allowing
one-click


completion
of
the
entire
voltage
step-up,
timing,
and
voltage
step-down
process
based
on
preset


parameters.

5.
Remote
and
Secure
Operation꞉
Supports
fiber-optic
remote
control,
ensuring
operators
can


complete
tests
from
a
safe
distance.

6.
Intelligent
Protection
and
Monitoring꞉
Multiple
real-time
protections
(overvoltage,
overcurrent,


flashover,
etc.)
combined
with
key
parameter
monitoring
and
data
logging
ensure
safe
and
reliable


testing.

7.
Reliable
Grounding꞉
Integrated
large-section
grounding
devices
and
ground
detection
ensure


reliable
equipment
grounding
during
testing.

750kV AC
Withstand
Voltage
Test
Platform

Duty ≥30min Hydraulic
System

8000pF

Multiple
specifications꞉
500kV,
750kV,
and
1000kV


integrated
AC
auxiliary
voltage
test
platform.

11

MS‑CZ Vehicle‑mounted
High‑pressure


Inflatable
No
partial
Discharge
Combined
Test
Device

TECHNICAL
PARAMETERS


1-3pc at rated voltage (normal environment)

No
more
than
65kV
(50Hz)
after
60
minutes
of
operation
at
rated
current

Voltage
Levels 100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV

Capacity 50-2000kVA

0.35-10kV (primary voltage)

Input
Voltage

Partial
Discharge

Temperature
Rise

High
Voltage


Generation
Method

MAIN
FEATURES

1.
A
vehicle-mounted
hydraulic
lift
mechanism
allows
for
easy
mobility
and
facilitates
on-site
testing.

2.
High
voltage
is
fully
enclosed
within
a
shielded
enclosure,
ensuring
safe
and
reliable
testing.

3.
The
overall
PD
level
can
be
controlled
to
within
1-3
pcs.

4.
Compact
size
minimizes
space
requirements
and
lightweight
components.

5.
A
built-in
high-voltage
disconnector
enables
multi-purpose
use.

6.
Easy
connection꞉
Direct
connection
to
the
test
product
facilitates
testing.

7.
Rugged
and
durable
construction
withstands
long-distance
transportation.

High-voltage
transformer
step-up
and
series
resonance(power
frequency,

variable
frequency).
All
step-up
methods
are
single-stage,
no
cascade
step-up
required.

13

MAIN
FEATURES

MS‑CZWJ Vehicle‑mounted


No PD
Withstand
Voltage
Test
System

1.
A
large
27-inch
LCD
display
provides
clear
and
intuitive
readings
for
voltage,
current,
time,
status
information,


and
prompts.

2.
An
all-Chinese
interface
provides
simple
and
straightforward
operation,
adaptable
to
a
variety
of
applications.

3.
Touchscreen
operation
allows
all
functions
to
be
preset,
enhancing
product
safety
and
reliability.

4.
Status
reminder
function
with
fully
Chinese-guided
operation.

5.
Alarm
function꞉
A
5-second
buzzer
alerts
when
a
combination
alarm
is
triggered;
a
buzzer
alert
sounds
when


voltage
signal
acquisition
is
abnormal.

6.
Emergency
stop
function꞉
In
automatic
control,
this
function
allows
for
an
emergency
stop
at
any
point
during


voltage
increase
or
decrease.

7.
Automatic
timing
function꞉
In
automatic
control,
the
device
automatically
starts
timing
when
the
voltage
rises


to
the
set
value.
When
the
timer
expires,
the
device
automatically
decreases
the
voltage
and
returns
to
zero.

8.
Manual
control
mode꞉
Similar
to
traditional
electric
voltage
increase/decrease,
voltage
increase/decrease
is


controlled
by
touch
buttons,
the
device
automatically
determines
upper
and
lower
limits,
and
provides
highvoltage
overvoltage,
low-voltage
overcurrent,
and
high-voltage
overcurrent
protection.

TECHNICAL
PARAMETERS


1-3pc at rated voltage (normal environment)

No
more
than
65kV
(50Hz)
after
60
minutes
of
operation
at
rated
current

Voltage
Levels 100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV

Capacity 50-2000kVA

0.35-10kV (primary voltage)

Input
Voltage

Partial
Discharge

Temperature
Rise

High
Voltage


Generation
Method

High-voltage
transformer
step-up
and
series
resonance
(power
frequency,
variable


frequency).
All
step-up
methods
are
single-stage,
no
cascade
step-up
required

AC
withstand
voltage
equipment

14

Common
specifications
(kVA/kV)：

135/108、270/108、270/270、540/270、1620/540、400/800、8100/500

SCOPE
OF
APPLICATION

1.AC
withstand
voltage
test
for
0.8km
of
220kV/630mm²
cable,
2km
of
110kV/630mm²
cable,
and
3km
of


35kV/240mm²
cable

2.AC
withstand
voltage
test
for
the
neutral
point
of
a
220kV
main
transformer
and
the
line
end
of
a
110kV


main
transformer

3.AC
withstand
voltage
test
for
circuit
breakers,
PTs,
CTs,
insulators,
and
GIS
components
up
to
220kV

Applicable
to
10-220kV
substation
equipment
and
cable
AC
withstand
voltage
test

MSXB‑F
Series
Variable


Frequency
Series
Resonant
Device

MSXZ(f)
-1620kVA/540kV


Variable
Frequency
Series
Resonance

15

MSXB-F-4000kVA/800kV


High
Voltage
Series
Resonance
Test
Device

SCOPE
OF
APPLICATION

SCOPE
OF
APPLICATION

1.AC
withstand
voltage
test
for
1.2km
of
220kV/630mm²
cable


and
3.5km
of
110kV/630mm²
cable

2.AC
 withstand
 voltage
 test
for
 the
 neutral
 point
 of
 a
 220kV


main
transformer
and
the
line
end
of
a
110kV
main
transformer

3.AC
 withstand
 voltage
 test
 for
 circuit
 breakers,
 PTs,
 CTs,


insulators,
GIS,
etc.,
220kV
and
below

MSXZ(f)-8100kVA/500kV


variable
frequency
series
resonant
transformer

1.AC
withstand
voltage
test
for
4km
of
220kV/1000mm²
cable,
10km
of
110kV/1000mm²
cable,
and


13km
of
35kV/240mm²
cable

2.AC
withstand
voltage
test
for
the
neutral
point
of
a
220kV
main
transformer
and
the
line
end
of
a


110kV
main
transformer

3.AC
withstand
voltage
test
for
circuit
breakers,
PTs,
CTs,
insulators,
GIS,
etc.,
220kV
and
below

AC
withstand
voltage
equipment

16

SCOPE
OF
APPLICATION

TECHNICAL
PARAMETERS


MS‑101G
Series


High
Voltage
Dielectric
loss
Tester

Upgrade
8
major
functions
to
fully
meet
test
reguirements

The
 dielectric
 loss
 insulation
 test
 can
 effectively
 detect
 the
 overall
 moisture
 deterioration
 and


deterioration
 of
 the
 insulation
 of
 electrical
 equipment,
 as
 well
 as
 local
 defects.
 It
 is
 widely
 used
 in


electrical
manufacturing,
electrical
equipment
installation,
handover
and
preventive
testing.

The
 variable
 frequency
 power
 supply
 adopts
 a
 high-power
 switching
 power
 supply,
 outputting


single-frequency
 45Hz~65Hz
 and
 dual-frequency
 47.5Hz\\52.5Hz,
 45.0Hz\\55.0Hz,
 57.5Hz\\62.5Hz,


55.0Hz\\65.0Hz
pure
sine
waves,
automatically
increasing
voltage,
and
can
provide
a
maximum
voltage


of
 12kV;
 it
 automatically
 filters
 out
 50Hz
 interference
 and
 is
 suitable
 for
 on-site
 testing
 with
 large


electromagnetic
interference
such
as
substations.

Four channels/forward and reverse measurementCVT measurementCVT ratio polarity errorLCR function/

insulation resistance functio

custom madel Output voltage 12kV, tgd-f curve, various data analysis, etc.

Model

MS-101G1 Four channels / simultaneous forward and reverse measurement / English program / CVT measurement

MS-101G2 Four channels/forward and reverse measurementCVT measurement/CVT ratio polarity error/LCR function

MS-101G3

MS-101G4

Function

Simultaneous
forward
and
reverse
measurement

Four-channel
simultaneous
measurement

CVT
ratio
polarity

CVT
self-excitation
method

LCR
measurement

Bluetooth
and
data
transmission

17

Transformer
Test

MAIN
FEATURES

1.Frequency
conversion
and
anti-interference

Automatically
identifies
50Hz/60Hz
system
voltage and
can
accurately
measure
under


200%
interference

2.4-channel
forward
connection

Internal/external
standard
capacitanceinternal/external
high
voltage

3.Reverse
wiring
low
voltage
shielding
function

220kV
VCT
busbar
grounding,
C11
performs
10kV
reversewiring
dielectric
loss


measurement
without
disconnectingthe
line

4.C1/C2
simultaneous
measurement

CVT
self-excitation
measurement,C1/C2
simultaneous
measurement

5.Measures
ratio,
polarity
and
phase
errors

CVT
ratio
measurement
function,
can
measure
ratio,polarity
and
phase
error

6.Can
be
connected
to
an
external
40Hz~70Hz

high
voltage
power
supply

7.Wireless
Bluetooth
interface
and
datareturn
function

8.
Built-in
computer
interface

APPLICABLE
SCENARIOS

18

YDQ/YDJZ/GTB


AC/DC
Voltage
Withstand
Tester





The
scope
of
application
is
mainly
used
for
conducting
insulation
strength
tests
on
various
electrical
products,


electrical
components,
insulation
materials,
etc.
under
specified
voltages,
to
assess
the
insulation
level
of
the


products,
discover
insulation
defects
of
the
tested
products,
and
measure
the
ability
to
withstand
overvoltage.


It
is
the
preferred
product
for
voltage
withstand
testing
equipment
required
by
departments
related
to
power


operation,
electrical
and
appliance
manufacturing
enterprises,
metallurgy,
coal
mines,
electrified
railways,
scientific


research
institutions,
and
universities


It
is
an
essential
testing
equipment
for
power
equipment
inspection
and
preventive
testing

SCOPE
OF
APPLICATION

Fully automatic Manual Fully automatic Manual

19

High
Voltage
Test
Series

TECHNICAL
PARAMETERS


Test
transformer
specifications


and
parameters

capacity

（kVA）

High
voltage


output
voltage（kV）

High
voltage


output
current（mA）

Low
voltage
input

V A

transformation


ratio

5

5kVA

50 100 200

25

500

5 100 50 200 1000

10

10

50

100

200

100

220/380

200/380

50/26

500

1000

10kVA

20kVA

30kVA

20

20

20

50

100

150

400 380

200 380

133 380

53

500

1000

1500

30

30

30

30

30

50 600

100 300

150 200

200 150

250 120

380

380

380

380

380

79

500

1000

1500

2000

2500

50kVA

50

50

50

50

50

50 1000

100 500

150 333

200 250

250 200

380

380

380

380

380

132

500

1000

1500

2000

2500

1000kVA

100

100

100

100

150

200

1000 3000

666 3000

500 3000

33

1000

1500

2000

Gas-filled transformers Oil-immersed transformers Dry-type transformers

20

MAIN
FEATURES

TECHNICAL
PARAMETERS


1.
Advanced
technology꞉
adopting
digital
frequency
conversion
technology,
microcomputer
control,


fully
automated
testing
processes
such
as
boost,
buck,
measurement,
and
protection;

2.
Equipment
operation꞉
simple
wiring
and
convenient
use;

3.
 Comprehensive
 protection꞉
 multiple
 protections
 (overvoltage
 protection,
 high
 and
 low
 voltage


side
overcurrent
protection),
quick
action
(action
time
≤
10ms),
instrument
safety
and
reliability;

4.
Safe
and
 reliable꞉
The
controller
and
high-voltage
generator
are
connected
at
low
voltage,
with


photoelectric
control,
ensuring
safe
and
reliable
use;

5.
Adopting
high
and
low
voltage
closed-loop
negative
feedback
control
circuit,
 the
output
has
no


capacitance
rise
effect.

MSVLF‑80kV/1.1uF


Ultra‑Low‑Frequency
0.1Hz
Test
Device

1%

≤3%

Rated
Output
Voltage 80kV

Output
Frequency 0.1Hz, 0.05Hz, 0.02Hz

0.1Hz, maximum 1.1µF; 0.05Hz, maximum 2.2µF;

0.02Hz, maximum 5.5µF Load
Capacity

Measurement
Accuracy

Positive
and
Negative


Voltage Peak
Erro

Voltage
Waveform
Distortion ≤5%

MSVLF‑101G
Ultra‑Low


Frequency
Cable
Dielectric
Loss
Tester

A
single
unit
performs
insulation
resistance,
dielectric
loss,
and
AC/DC
withstand
voltage
tests
on


10kV/35kV
cables.

TECHNICAL
PARAMETERS


Yes

0.5µF at rated voltage 0.1Hz; 12µF at low

frequency or low voltage

Power
Supply 100-240V 50/60Hz, ±10%

Input
Power 400VA

Output
Frequency 0.01Hz - 0.1Hz in 0.01Hz increments

Frequency
Optimization

Output
Load
Capacity

21

Designed
for
leakage
current
and
DC
withstand
voltage
tests
of
water-cooled
generators

ZGS‑80kV
300mA
Water‑cooled


Generator
DC
Withstand
Voltage
Test
Equipment

Testing with Blowing Water

Advantages꞉
 A
 standard
 DC
 high-voltage
 generator
 can
 be
 used
 for
 testing.
 The
 equipment
 is


lightweight,
easy
to
operate,
and
provides
accurate
readings,
unaffected
by
water
quality.

TECHNICAL
PARAMETERS


1.0% ± 2 digits

1.0% ± 2 digits

Output
voltage
(kV) 80kV

Output
current
(mA)
 300

Output
power
(kW)
 24

Voltage
measurement
error

Total
current
measurement
error


Leakage
current
measurement
error 2.0%（±1uA）

MAIN
FEATURES

High
Voltage
Test
Series

MS‑3126A
Insulation
Resistance
Tester

It
features
five
measurement
ranges꞉
500V,
1000V,
2500V,
5000V,
and
10000V,
and
can
test


resistances
up
to
10TΩ.It
is
powered
by
a
lithium-ion
battery
that
can
be
charged
while
in
use.

1.
 Insulation
 resistance
 range꞉
 10TΩ
 @
 10kV,
 with
 an
 adjustable


short-circuit
current
up
to
10mA.

2.
 Automatically
 displays
 polarization
 index
 (PI)
 and
 dielectric


absorption
ratio
(DAR)
values,
and
can
measure
leakage
current
and


capacitance.

3.
 Excellent
 anti-interference
 performance꞉
 the
 instrument


maintains
test
accuracy
even
with
interference
currents
up
to
2mA.

4.
 Rapid
 discharge
 of
 capacitive
 test
 pieces.
 When
 testing


c a b l e s ,
 m a n u a l
 d i s c h a r g e
 i s
 u n n e c e s s a r y ;
 t h e
 i n s t r um e n t


automatically
discharges
quickly

MAIN
FEATURES

22

TECHNICAL
PARAMETERS


ZGF
Series
DC
High
Voltage
Generator

The
instrument
is
 suitable
for
 DC
 withstand
 voltage
test
 and
leakage
test
 of
 zinc
 oxide
lightning


arrester,
magnetic
blowout
lightning
arrester,
power
cable,
transformer,
generator
and
other
equipment


in
the
power,
railway,
chemical,
mining,
metallurgy,
steel
and
other
departments.
It
can
also
be
used
as


power
source
for
electrostatic
dust
collection
and
spraying.

Integrated Split body

SCOPE
OF
APPLICATION

specifications

structure

Rated
voltage


(kV)

Rated
current


(mA)

Rated
power
(W)

Voltage
accuracy

current
accuracy

60/2 60/3 60/5 120/2 120/3 120/5 200/2 200/3 200/5 300/2 300/3

300/5

300/5

Integrated Split body

60 120 200 300

2 3 5 2 3 5 2 3 5 2 3 5

120 180 300 240 360 600 400 600 1000 600 900 1500

±
(1.0% reading+2 words)

±
(1.0% reading+2 words)

23

High
Voltage
Test
Series

It
 is
 an
 essential
 equipment
 for
 electrical
 tests
 where
 high
 current
 is
 required,
 and
 is
 used
 in


power
 plants,
 distribution
 substations,
 electrical
 appliance
 manufacturing,
 scientific
 research,


laboratories
and
other
units.

SCOPE
OF
APPLICATION

TECHNICAL
PARAMETERS


MSDDG Series
High
Current
Generator

Capacity
(kVA) Output
Current
(A) Weight(kg) Notes

Can
be
made


into
split
or


integrated


structures

3 500 24

5

10

12

15

1000

2000

2500

3000

40

60

68

75

20 4000 110

30

40

60

75

5000

6000

8000

10000

160

180

240

280

split
type

Capacity
(kVA) Output
Current
(A) Weight(kg) Notes

24

This
 instrument
 is
 widely
 used
 for
 partial
 discharge
 measurement,
 product
 type
 testing,
 and


insulation
 operation
 monitoring
 of
 various
 high-voltage
 electrical
 products,
 including
 transformers,


mutual
 inductors,
 high-voltage
 switches,
 zinc
 oxide
 arresters,
 and
 power
 cables.
 It
 offers
 high


sensitivity,
covers
a
wide
range
of
sample
capacitance,
and
is
suitable
for
a
wide
range
of
test
products.


It
also
 features
a
comprehensive
 range
of
input
units
 (detection
impedance)
and
offers
nine
 frequency


band
combinations.
After
proper
calibration,
it
can
directly
read
 the
discharge
capacity
of
a
discharge


pulse.

Common
specifications

10kVA/50kV
is
used
for
10kV
level

15kVA/150kV
is
used
for
35kV
level

25kVA/250kV
is
used
for
110kV
level

Inflatable non-partial discharge pressure-resistant device

system
composition

1.
Transformer
without
partial
discharge
test

2.
Non
partial
discharge
transformer
control
console

3.
Non
partial
discharge
isolation
filter
transformer

4.
Non
partial
discharge
coupling
capacitor
(with


built-in
voltage
divider
function)

5.
No
partial
discharge
protection
resistor

6.
Partial
discharge
tester

150kV

less than

5pc

250kV

less than

5pc

Fully automatic oil-immersed non-partial discharge pressure-resistant device

High
Voltage
Test
Series

25

Non‑partial
Discharge
Power
Frequency


Withstand
Voltage
Test
Device

YDQ(W)/YDJZ(W)

Transformer
Test

MSJF‑3001B
Ultrasonic
Partial
Discharge
Tester

SCOPE
OF
APPLICATION

Used
 to
 detect
 partial
 discharge
 in
 operating
 switchgear,
 transformers,
 cables,
 GIS,
 overhead


lines,
 and
 more.A
 built-in
 two-in-one
 ultrasonic
 and
 geomagnetic
 wave
 sensor
 allows
 for
 PD


detection
in
switchgear
without
the
need
for
external
sensors.

MAIN
FEATURES

Non-invasive
 detection
 eliminates
 the
 need
 for
 power
 outages,
 making
 operation
 simple
 and


versatile.Configurable
 with
 different
 sensors,
 it
 can
 detect
 partial
 discharge
 in
 virtually
 any
 highvoltage
electrical
equipment.Provides
various
discharge
patterns,
including
time-domain
waveforms,


PRPD,
 and
 PRPS,
 enabling
 analysis
 of
 different
 discharge
 types.The
 test
 bandwidth
 ranges
 from


30kHz
to
2.0GHz,
enabling
detection
principles
applicable
to
various
frequency
bands.

26

MSBR‑II Transformer


Winding
Deformation
Tester

TECHNICAL
PARAMETERS


1MΩ

50Ω

Amplitude
measurement
range
 (-100dB) to (+20dB)

Amplitude
measurement
accuracy +20dB ~ -60dB ±1dB

Sweep
frequency
accuracy

Signal
input
impedance

In-phase
test
repetition
rate 99.5%

internal
structural
fault
detection
of
63kV~500kV
power
transformers

-60dB ~ -100dB ±2dB

0.01%

Signal
output
impedance

MS‑560 Transformer


Capacity
Characteristics
Tester

Used
to
measure
no-load
current,
no-load
loss,
impedance
voltage,
load
loss,
and
zerosequence
impedance
of
various
types
of
transformers.

1.
 Automatically
 performs
 waveform
 distortion
 and
 temperature


correction.

2 . M e a s u r e s 
 t h r e e - p h a s e 
 v o l t a g e / c u r r e n t , 
 a v e r a g e


voltage/current,
and
two-phase
active
power.

3.
 Measures
 harmonics
 and
 total
 distortion
 for
 each
 phase
 of


voltage
and
current.

4.
 Displays
 real-time
 waveforms
 for
 each
 phase
 of
 voltage
 and


current.

MAIN
FEATURES

TECHNICAL
PARAMETERS


Voltage
measurement
range 0-750V (wide range)

Current
measurement
range 0-5-100A All
internal
ranges
are
automatically
switched

27

Transformer
Test

MS‑103 Transformer


Short
Circuit
Impedance
Test
System

TECHNICAL
PARAMETERS


0-80A AC

1Ω-200Ω

Basic
measurement
accuracy Voltage, current, and impedance 0.2% ± 3 digits

Power

Voltage
measurement
range

Current
measurement
range

Capable
of
measuring
transformer
short-circuit
impedance,


short-circuit
reactance,
short-circuit
resistance,
and
three-phase
impedance
voltage.

0-800V AC

Impedance
measurement
range

MS‑100D

Transformation
Ratio
Tester

This instrument overcomes the shortcomings of traditional ratio bridge testing,

completing three-phase ratio testing in one go, with fast testing speed and high

accuracy, greatly improving testing efficiency.

1. Wide testing range, up to 10000.

2.
Displays
hexagonal
vector
diagram
and
group
number

3.
Blind
measurement
of
transformation
ratio
and
group
number

4.
Phase
angle
measurement

5.
High
and
low
voltage
reverse
connection
protection,
transformer


short-circuit
protection,
and
inter-turn
short-circuit
protection

6.
AC
and
DC
power
supply
options
to
meet
diverse
site
requirements

MAIN
FEATURES

TECHNICAL
PARAMETERS


Measuring
range 0.9 to 10,000

Phase
angle
measurement
accuracy 0.1°

0.5% ± 3 digits (cosφ > 0.1),

1.0% ± 3 digits (0.01 < cosφ ≤ 0.1)

Phase
angle
measurement
range 0 to 360°

28

MS‑100ES Handheld
Three‑Phase


Transformer
Turns
Ratio
Tester

TECHNICAL
PARAMETERS


0.1%

0.0001

Turns
ratio
measurement
range 0.9 to 10,000

Measurement
speedt Complete three-phase test in 35 seconds

Measurement
accuracy

Low-voltage
side
voltage


measurement
accuracy

Turns
ratio
measurement
accuracy

High-voltage side voltage measurement

accuracy꞉ 0.05%

Turns
ratio
resolution

Single-phase
 measurement,
 automatic
testing
 of
three-phase
 windings.
 No
 power


supply
is
required
on
site
to
complete
the
test
work.
A
full
charge
can
perform
more
than


500
measurements
continuously.

0.1% (0.9-200), 0.2% (200-2000), 0.3% (2000-10,000)

Full-range 0.1-level equipment available upon request

1.
Single-phase
and
three-phase
measurements

2.
Displays
hexagonal
vector
diagram
and
group
number

3.
Blind
measurement
of
transformation
ratio
and
group
number

4.
Turns
ratio
and
operating
voltage
ratio
measurements

5.
Demagnetization
function
eliminates
residual
magnetism
in
the
transformer
core

6.
AC
and
DC
power
supply
options
to
meet
diverse
field
requirements

MAIN
FEATURES

MS‑100B(E)
Transformer


Turns
Ratio
Testing
Equipment

MAIN
FEATURES

TECHNICAL
PARAMETERS


The
 instrument
 offers
 fast
 testing
 speeds,
 completing
 a


three-phase ratio test in just 10 seconds with a single


connection.
It
 also
features
 a
 blind
test
function,
 allowing
 you


to
 perform
 ratio
 and
 group
 tests
 even
 when
 the
 high
 and
 low


voltage
 connection
 configurations
 are
 unknown.
 It
 is
 suitable


for
testing
distribution
transformers
up
to
1000kV
transformers,


single-phase
transformers,
and
current
transformers.

Range

Accuracy

Resolution

0.9 to 10,000

±(reading × 0.2% + 2 digits) (≤ 500)

(reading × 0.5% + 2 digits) (greater than 500)

0.9 to 9.9999 (0.0001)

29

Transformer
Test

MS‑207T

Transformer
On‑load
Switch
Tester

Used
 to
 measure
 the
 transient
 waveform,
 transient
 time,
 transient
 resistance,


and
three-phase
synchronicity
of
transformer
on-load
tap-changers.

TECHNICAL
PARAMETERS


10 kHz/s

Transition resistance꞉ 0.5Ω to 20Ω

Output
current ≥
1A, 3 channels

Data
sampling Sampling

channels

Sampling
frequency

6 channels

Measurement
range

MS‑510S2 Three‑Channel


Winding
DC
Resistance
Tester

This
device
integrates
magnetizing
method
testing,
three-phase
testing
(Yn,
Y,
Δ),


and
 demagnetization
 functions.
 It
 completes
 all
 DC
 resistance
 tests
 with
 a
 single


connection,
offering
fast
testing
speed.

MAIN
FEATURES

1.
 Th ree-phase
 measu remen t
 me thod,
 calcula tion
 o f
 th ree-phase


imbalance
rate.

2.25kΩMaximum
output
current
20A,
test
range
up
to
25kΩ

3.Automatically
 calculates
 the
 resistance
 change
 rate
over
5,
 15,
 and
30


seconds.

TECHNICAL
PARAMETERS


Single-Phase꞉
20A,
10A,
5A,
1A,
0.1A,
10mA,
<1mA

Three-Phase꞉10A+10A,
5A+5A,
1A+1A,
0.1A+0.1A

Output
Current

30

MS‑520S

Three‑channel
DC
Resistance
Tester

Integrates
three-phase
testing,
magnetizing,
and
demagnetizing
functions.

TECHNICAL
PARAMETERS


20A+20A；10A+10A；5A+5A；1A+1A；

200mA+200mA；20mA+20mA；

Three-phase
test

Single-phase
test 40A; 20A; 10A; 5A; 1A; 200mA; 20mA;

MAIN
FEATURES

1.Mainly
suitable
for
measuring
inductive
resistance
in
transformers,


instrument
transformers,
and
other
devices.

2.Measures
three-phase
DC
resistance
on
star-connected
windings


and
automatically
calculates
three-phase
imbalance.

MS‑520 DC
Resistance
Tester

Offers
 six
 output
 current
 settings,
 with
 a
 maximum
 of
 20A
 and
 a
 minimum
 of


<5mA,
 making
 it
 suitable
 for
 measuring
 the
 DC
 resistance
 of
 a
 wide
 range
 of


transformers
and
instrument
transformers.

TECHNICAL
PARAMETERS


Output
current 20A, 10A, 5A, 2A, 100mA, <5mA

Measurement
range

100μΩ to 1Ω (20A), 500μΩ to 2Ω (10A),

1mΩ to 4Ω (5A), 5mΩ to 10Ω (2A),

100mΩ to 200Ω (100mA), 200Ω to 100kΩ (<5mA)

MAIN
FEATURES

1.Wide
measurement
range
(100μΩ
to
100kΩ)

2.Discharge
alarm
function,
clear
discharge
indication

3.On-load
tap-changer
can
be
directly
switched
during
measurement

Accuracy 0.2%±2μΩ

31

MS‑401 SF6 Gas
Density
Relay
Calibrator

TECHNICAL
PARAMETERS


Measures
the
alarm
value,
latch
value,
alarm
return
value,
and
latch
return
value


of
 SF₆
 gas
 density
 relays.
 Both
 single
 latch
 and
 double
 latch
 measurements
 are


available.
 The
 instrument
 also
 features
 normal
 temperature
 pressure
 gauge


calibration
and
20°C
pressure
gauge
calibration.

50W

Class
0.2

Ambient
temperature -20°C to 70°C

Relative
humidity 90% RH

Power
supply AC220V, 50Hz

Power
consumption

Accuracy

Pressure
display
resolution 0.001MPa

Pressure
calibration
range 0 to 1MPa

Ambient
temperature
display
resolution 0.1°C

Single alarm, single latch,

single alarm and single latch,

single alarm and double latch

Calibration
options

SF6
Gas
Measurement
and
Detector

MS‑403 SF6 Gas
Leak
Detector

TECHNICAL
PARAMETERS


±2% FS (0-1000 ppm)

≤±
1%

Detection
range 0-1500 ppm

Resolution 0.1PPmv

Detection
range 0‑1500PPmv

Accuracy

Repeatability

Performs
qualitative
and
quantitative
leak
detection
in
SF₆
electrical
equipment.

1.
Accurately
locates
leak
points
in
SF₆
gas-filled
electrical
equipment.

2.Displays
multiple
parameters
simultaneously,
including
SF₆
concentration,


temperature
and
humidity,
battery
indicator,
time,
and
diaphragm
pump
status.

3.Utilizes
non-dispersive
infrared
(NDIR)
technology
and
a
German-made
sensor.

MAIN
FEATURES

32

MS‑405
 SF6 Trace
Moisture
Tester

Integrates
three-phase
testing,
magnetizing,
and
demagnetizing
functions.

TECHNICAL
PARAMETERS


TECHNICAL
PARAMETERS


MAIN
FEATURES

1.
Chilled
mirror
balance
principle
eliminates
measurement
errors
caused
by


hysteresis,
resulting
in
high
measurement
accuracy.

2.
Excellent
repeatability,
fast
response,
high
sensitivity,
and
excellent
stability.

3.
Conversion
between
dew
point
and
moisture
concentration
is
possible.

SCOPE
OF
APPLICATION

Applications꞉

1.
Trace
moisture
monitoring
in
SF₆
gas-fired
electrical
equipment

2.
SF₆
gas
cylinder
quality
testing

3.
High-purity
gas
manufacturing

4.
Dry
gas
supply
for
the
semiconductor
industry

5.
R&D
applications

6.
Cleanroom/dryroom
monitoring

7.
Humidity
testing
of
industrial
gases
in
metal
heat
treatment
sites
and
laboratories.Examples


include
air,
CO₂,
N₂,
H₂,
O₂,
SF₆,
He,
Ar,
and
other
inert
gases.

Measurement
Method RC
measurement
principle

Ambient
Temperature -20°C
to
+60°C

Measurement
Range

-80°C
to
+20°C(When
the
dew
point
is
below
0°C,


the
sensor
output
is
frost
point)

Response
Time꞉
63%
[90%]

+20°C
to
-20°C꞉
Td꞉
5s
[45s]

-20°C
to
-60°C꞉
Td꞉
10s
[240s]

Measurement
Error Better
than
±2°C


Repeatability ±0.5°C,
Resolution꞉
0.01°C

MS‑405B
SF6

Dew
Point
Analyzer

Dew
point
measurement
range -60°C to +20°C (at 20°C atmospheric pressure)

Dew
point
accuracy

Dew
point
repeatability ±0.05°C

±0.1°C to ±0.2°C

33

MS‑406 SF6 Purity
Tester

TECHNICAL
PARAMETERS


0 ~ 100 Kpa

Measuring
range 90% ~ 99.99%

Measuring
accuracy

Response
time

Inlet
pressure

<
2 minutes

By
simultaneously
monitoring
SO₂,
H₂S,
and
CO
decomposition
products,
it
can
quickly


detect
and
diagnose
early-stage
faults
within
SF₆
electrical
equipment
(circuit
breakers,


instrument
transformers,
transformers,
GIS,
bushings,
etc.)
on-site.

TECHNICAL
PARAMETERS


Measuring
range 0-100ppm

Minimum
detectable
level ≤
0.1ppm

±
0.3%

Accuracy ±
0.5%

MAIN
FEATURES

1.The
sensor
probe
can
automatically
calibrate
the
zero
point,
automatically


eliminate
the
system
error
introduced
by
zero
point
and
drift,
and
ensure
the


accuracy
of
each
measurement.

2.Quick
and
gas-saving꞉
After
the
instrument
is
turned
on
and
enters
the


measurement
state,
each
purity
measurement
takes
about
2
minutes.

3.Self-locking
connector꞉
Uses
original
imported
self-locking
connector,
which
is


safe,
reliable
and
leak-free.

MS‑407 SF6 Gas
Decomposition
Analyzer

H₂S

So₂

Repeatability ≤
1%

Measuring
range 0-100ppm

Minimum
detectable
level ≤
0.1ppm

Accuracy ±
0.5%

Repeatability ≤
1%

Measuring
range 0-1000ppm

CO

Minimum
detectable
level

Measuring
range

Measuring
range

≤
1ppm

±
0.5%

≤
1%

34

Combining
 an
 SF₆
 moisture
 meter,
 SF₆
 purity
 meter,
 and
 SF₆
 decomposition


product
 analyzer,
 this
 single
instrument
 combines
 the
 functions
 previously
 required


three
 instruments.
 A
 single
 on-site
 measurement
 allows
 you
 to
 test
 all
 three


indicators.

TECHNICAL
PARAMETERS


SF₆
Gas
Trace
Moisture

①
-80
to
+20°C
(supports
ppmv,
etc.)

②
Response
Time
63%
[90%]

③
+20
to
-20°C
Td
5s
[45s]

④
-20
to
-60°C
Td
10s
[240s]

SF₆
Gas
Purity 1.
Purity
Accuracy꞉
±0.5%
FS

2.
Repeatability꞉
±0.5%

Decomposition


Product
Parameters

H2S：1～200PPmv

SO2：1～100PPmv

CO：1～500PPmv

MS-408
SF₆
Gas
Analyzer

35

MS‑408 SF6 Gas
 Analyzer

MS‑409 Insulating
Oil
Gas
Content
Tester

For
 transformers
 with
 voltage
 levels
 of
 330-750
 kV,
 samples
 are
 taken
 after
 a


specified
rest
period
to
measure
the
gas
content
(volume
fraction)
in
the
oil.

Insulating
Oil
Test
Equipment

TECHNICAL
PARAMETERS


Better than the permissible reproducibility of the DL/T-703

<
40
mL/time
(including
flushing
oil)

Range 0.05-10.00% (gas content)

Accuracy 0.5%

Repeatability Better
than
the
permissible
repeatability
of
the
Dl423

Reproducibility

Oil
usage

1.
Wide
detection
range
and
accurate
testing.

2.
On-site
measurement,
complementing
the
limitations
of


chromatographic
instruments.

3.
Simple
operation,
convenient
maintenance,
and
calibration.

4.
Minimizes
insulating
oil
usage.

MAIN
FEATURES

MSKS‑403 Fully
Automatic

Open‑Cut
Flash
Point
Tester

Utilizes
a
high-performance
ion
ring
to
detect
sudden
changes
in
flame

conductivity
resistance.

TECHNICAL
PARAMETERS


0.1°C

Temperature
measurement 40-400°C

Measurement
accuracy ±1°C

Repeatability 0.5%

Resolution

1.
Automatic
measurement
process
including
detection,
ignition,
alarm,


cooling,
and
printing.

2.
Platinum
heating
wire
with
selectable
electric
and
gas
ignition
modes.

3.
Automatic
atmospheric
pressure
detection
and
correction
of
test
results.

4.
Power-off
memory
function
automatically
saves
test
results.

MAIN
FEATURES

36

MSQN‑601 Transformer
Oil
Pour

Point
Automatic
Tester

TECHNICAL
PARAMETERS


+10°C to -70°C

20ml
per
test

Temperature
Measurement Platinum Resistance Temperaturet

Accuracy ±
1°C

Resolution 0.1°C

Measuring
Range

Test
Oil
Quantity

Featuring
self-diagnostic
capabilities,
it
analyzes
samples
quickly,
accurately,
with


excellent
repeatability,
stability,
and
reliability.
This
instrument
is
a
specialized


instrument
for
the
power,
petroleum,
and
chemical
industries,
replacing
imported


products.
When
testing
the
pour
point
of
petroleum
products,
the
display
shows
the
pour


point
temperature
when
the
sample
cools
to
the
lowest
temperature
at
which
it
can
flow


(the
pour
point),
an
audible
prompt
sounds,
and
the
test
results
are
printed.

MAIN
FEATURES

Cooling
Water
Requirement꞉
Pressure 4.9×101
to
4.9×105
Pa

Flow
Rate 1.5
L/min

MSWS‑2 Karl
Fischer
Titrator

Constant
pressure
detection,
high
accuracy,
fast
measurement
speed,
stable
and
reliable

TECHNICAL
PARAMETERS


0.1μg

Measuring
range 1μg-200mg

Measuring
accuracy 3μg-1000μg ≤ ± 3μg, ≥ 1000μg ≤ ± 0.3%

Electrolysis
current 0-400mA

Resolution

MAIN
FEATURES

1.
Real-time
electrolysis
curve
graph,
monitor
reagent
status
at
any
time;

2.
Power-off
memory
function
automatically
saves
results,
with
a
capacity
of
100
data
sets;

3.
Touchscreen
LCD
display,
simple
operation,
and
user-friendly
interface;

4.
High
measurement
accuracy,
fast
measurement
speed,
and
stable
data

37

MSYN‑1301 Kinematic
Viscometer

TECHNICAL
PARAMETERS


±
0.01°C

Number
of
bath
wells 4

Temperature
control
range

Constant
temperature
accuracy

Measurement
accuracy

±
0.1°C

Imported
sensor
and
digital
PID
temperature
control
technology
provide
a
wide


temperature
control
range
and
high
accuracy.

Room temperature to 130°C

MAIN
FEATURES

1.
Power-off
memory
function
automatically
saves
results
and
can
store
up
to
100
sets
of
data.

2.
Touchscreen
LCD
display
for
simple
operation
and
a
user-friendly
interface.

3.
High
measurement
accuracy,
fast
speed,
and
stable
data.

Power
supplyt AC 220 V, 10%

MSZL‑203 Transformer


Oil
Interfacial
Tension
Meter

TECHNICAL
PARAMETERS


0.1 mN/m

Measurement
range 0-200 mN

Accuracy

Sensitivityt

Resolution

0.1 mN/mt

Unique
fast-response
electromagnetic
force
balance
sensor
improves
measurement


accuracy
and
linearity.

0.1% of reading ± 0.1 mN/mt

MAIN
FEATURES

1.
Calibration
requires
only
one
point,
eliminating
the
need
for
multiple


calibration
points.

2.
Real-time
display
of
equivalent
tension
and
current
weight.

3.
Integrated
temperature
detection
circuitry
for
automatic
temperature


compensation
of
measurement
results.

38

MSSZ‑2006

Insulating
Oil
Acid
Value
Tester

TECHNICAL
PARAMETERS


Acid
value
range 0.001 to 1 mg KOH/g

Minimum
resolution

Repeatability 0.002 mg KOH/g

Three-cup
and
six-cup
integrated
design,
suitable
for
testing
the
acid
value
of
transformer


oil
and
turbine
oil.

0.001 mg KOH/g

MAIN
FEATURES

1.
Automatically
completes
extractant
addition,
neutralization


titration,
endpoint
determination,
and
acid
value
calculation.

2.
No
need
to
prepare
extractant,
neutralization
solution,
or
other


working
solutions.

3.
Average
oil
sample
testing
time
is
approximately
2
minutes.

4.
Automatic
standard
acid
calibration
minimizes
system
errors.

5.
Large-capacity,
high-efficiency
carbon
dioxide
and
water


purification
system.

6.
Guaranteed
neutralization
solution
concentration
stability.

YJJ‑II Insulating
Oil


Dielectric
Strength
(BDV)
Tester

TECHNICAL
PARAMETERS


0-80
kV
(0-100
kV
customizable)
Single-cup

MAIN
FEATURES

1.Automatically
performs
voltage
boosting,
holding,
stirring,
settling,
and
calculations

Features
data
storage
and
printout
functions

2.Power-off
memory
function
automatically
saves
test
results

3.Overvoltage,
overcurrent,
limit,
and
ground
fault
alarms

Waveform
conditioning
function
eliminates
harmonic
interference
that
can
interfere
with
accurate


measurements

Output
voltage 0-80 kV (0-100 kV customizable)

Voltage
distortion
rate <2%

Boosting
rate 2.0-3.5 kV/s (Δ = 0.5 kV/s)

Booster
capacity 1.5 kVA

Measurement
accuracy ±(2% + 2 digits)

39

YJJ‑3S Insulating

Oil


Dielectric

Strength

(BDV)

Tester

TECHNICAL
PARAMETERS


1.5 kVA

Output
voltage 0-80 kV (0-100 kV customizable)

Voltage
distortion
rate

Boosting
rate

Booster
capacity

2.0-3.5 kV/s (Δ = 0.5 kV/s)

0-80
kV
(0-100
kV
customizable)
Three-Cup
Integrated

<2%

MAIN
FEATURES

1.Automatically
performs
voltage
boosting,
holding,
stirring,
settling,
and
calculations

2.Features
data
storage
and
printout
functions

3.Power-off
memory
function
automatically
saves
test
results

4.Overvoltage,
overcurrent,
limit,
and
ground
fault
alarms

5.Waveform
conditioning
function
eliminates
harmonic
interference
that
can
interfere
with


accurate
measurements

Measurement
accuracy ±(2% + 2 digits)

MSPH
‑3003

Insulating
Oil
Acidity
Tester

TECHNICAL
PARAMETERS


0.1 PH

Measuring
range 3.6-7.0 PH

Measurement
error

Constant
temperature
accuracy

Resolution

±2°C

Three-in-one
design
offers
fast
measurement
cycles
and
high
efficiency.

≤±0.1 PH

MAIN
FEATURES

1.
Automatically
completes
heating,
constant
temperature,
oscillation,
sampling,
testing,


cleaning,
and
printing.

2.
Power-off
memory
function
automatically
saves
test
results.

3.
Flexible
selection
between
direct
and
standard
tests
for
convenient
testing.

4.
Programmable
cleaning
function
allows
for
convenient
line
cleaning.

Power
supply AC 220 V, 10%

40

MSBS‑303A


Closed
Cup
Flash
Point
Tester

TECHNICAL
PARAMETERS


Temperature
measurement Room temperature to 300°C

Measurement
accuracy

Repeatability 0.5%

Automatically
completes
the
test
process꞉
testing,
opening
the
lid,
ignition,
alarm,
cooling,


and
printing.

≥110°C ± 2°C, ≤110°C ± 1°C

MAIN
FEATURES

1.
Platinum
heating
wire,
selectable
ignition
modes꞉
electric
and
gas.

2.
Power-off
memory
function
automatically
saves
test
results.

3.
Automatic
atmospheric
pressure
detection
and
correction
of
test
results.

4.
High-power,
high-frequency
switching
power
supply
heating
technology
for
high
heating
efficiency.

5.
PID
control
algorithm
automatically
adjusts
the
heating
curve.
Detection
stops
and
alarms


automatically
when
the
temperature
exceeds
the
specified
value.

Resolution 0.1°C

41

MSGK‑E Circuit
 Breaker
 Analyzer

TECHNICAL
PARAMETERS


Vacuum
circuit
breaker
 range꞉ 50.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1

SF6
circuit
breaker


Oil
circuit
breaker range꞉ 1000.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1

Equipped
with
an
industrial
computer
architecture,
it
is
suitable
for
all
models
of
SF6


switches
with
metal
contacts,
GIS
combination
switches,
vacuum
switches,
and
oil
switches


manufactured
domestically
and
internationally.

range꞉ 300.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1

MAIN
FEATURES

1.
Accelerometers,
rotational
speed
sensors,
and
linear
travel
sensors
are
extremely


easy
and
simple
to
install.

2.
Triggering
modes꞉
internal,
external,
sensor,
and
manual.

3.
Energy
storage
power
supply
output꞉
An
adjustable
energy
storage
power
supply


with
a
maximum
starting
current
of
20A.

TECHNICAL
PARAMETERS


Measuring
range 50A - 0-10mΩ, 100A - 0-5mΩ

Resolution

The
MSHL-100A
Micro-Ohmmeter
is
suitable
for
high-precision
measurement
of
contact


(loop)
resistance
of
high
and
low
voltage
switches
and
DC
resistance
of
cable
lines.
It
is
also


suitable
for
other
applications
requiring
high
current
and
micro-resistance
measurements.

0-99.99μΩ - 0.01μΩ, 100.0-10000.0μΩ - 0.1μΩ

MAIN
FEATURES

1.
Latest
switching
power
supply
technology
enables
long-term


continuous
high
current
output.

2.
Stable
readings
within
±1
digit
even
under
severe
interference


conditions.

3.
Highest
resolution
up
to
0.01μΩ.

4.
Imported
high-performance
CPU
with
automatic
range
switching


ensures
test
accuracy.

5.
Powerful
functions꞉
Optional
current
selection
between
50A
and
100A.

42

The
MSHL‑100A Micro‑Ohmmeter

HV
Switch
Test

MS‑208V
 Vacuum
 Tester

TECHNICAL
PARAMETERS


Test
Objects Various types of vacuum switch tubes

Test
Method

Scope
of
Application Multi-purpose unit capable of measuring various types of

vacuum switches

Widely
applicable
to
industries
using
vacuum
switches,
such
as
power,
steel,
petrochemicals,


textiles,
coal,
and
railways.

Non-disassembly measurement using a new excitation coil

MAIN
FEATURES

1.
Quantitatively
measures
the
vacuum
level
within
the
arc
extinguishing
chamber
of


various
vacuum
switch
models.

2.
No
need
to
disassemble
the
vacuum
switch
for
on-site
measurement.

3.
Accurate
and
reliable
test
results.

4.
Simple
and
convenient
operation.

Measuring
Ranget 10-5 to 10-1 Pa

43

It
can
calibrate
various
relays
(such
as
current,
voltage,
inverse
time,
power
direction,


impedance,
differential,
low-frequency,
synchronous,
frequency,
DC,
intermediate,
and


time)
and
microcomputer
protection
devices.
It
can
also
simulate
a
variety
of
complex


transient,
permanent,
and
switching
faults
to
conduct
complete
tests.Accuracy

MAIN
FEATURES

1.
Features
4-phase
voltage
and
3-phase
current
outputs,
enabling
convenient
output
combinations


for
various
types
of
protection
tests.

2.
Each
phase
can
output
120V
voltage,
and
all
three
phases
can
output
120A
current.

3.
The
fourth
phase
voltage,
Ux,
is
a
multi-function
voltage
setting.

4.
Outputs
can
be
set
to
four
different
values꞉
3U0,
sync
check
voltage,
or
any
other
voltage
value.

(Three-Phase Single-Chip Computer, Class 0.2 Accuracy) (Three-Phase Industrial Computer, Class 0.2 Accuracy)

MS‑702C/802C Relay
Protection
Tester

MS‑1200C
Six‑phase
Relay
Protection
Tester

TECHNICAL
PARAMETERS


AC
current
output
 6 channels, 30A/450VA each, 180A in six-phase parallel connectiont

AC
voltage
output


Output
accuracy 0.2% (within the main range)

(Six-phase, Class 0.2 Accuracy)

6 channels, 120V/80VA each, 240V line voltage

MAIN
FEATURES

1.
Outputs
up
to
6
voltage
and
6
current
phases,
which
can
be
combined
to
achieve
conventional
4-phase


voltage
and
3-phase
current
modes.

2.
6-phase
voltage,
6-phase
current,
and
12-phase
output
modes
are
compatible
with
various
traditional


test
methods.

It
can
calibrate
various
relays
(current,
voltage,
inverse
time,
power
direction,
impedance,


differential,
low-frequency,
synchronous,
frequency,
DC,
intermediate,
and
time)
and
microcomputer


protection
systems.
It
can
also
simulate
a
variety
of
complex
transient,
permanent,
and
switching
faults


for
complete
testing.

DC
current
output 3 channels, ±10A/200VA each

DC
voltage
output

Output
accuracy 0.5% (within the main range)

3 channels, ±160V/70VA each

44

Secondary
Injection
Relay
Tester


MS‑601G
CT/PT
Transformer


Comprehensive
Tester



TECHNICAL
PARAMETERS


Output 0-180Vrms, 12Arms, 36A (peak)

CT
ratio
measurement
range

PT
ratio
measurement
range 1-40000, accuracy꞉ ±0.2%

Test
Applications꞉
Protection
CTs
and
Pts

1-40000, accuracy꞉ ±0.2%

MAIN
FEATURES

1.
Meets
the
requirements
for
testing
the
excitation
characteristics
(i.e.,
volt-ampere
characteristics),
turns
ratio,


polarity,
secondary
winding
resistance,
secondary
load,
ratio
difference,
and
angular
difference
of
various
CTs
(e.g.,


protection,
metering,
and
TP).

2.
Tests
the
excitation
characteristics,
turns
ratio,
polarity,
secondary
winding
resistance,
ratio
difference,
and


angular
difference
of
the
electromagnetic
units
of
various
Pts.


3.
Automatically
generates
knee
point
voltage/current
and
10%
(5%)
error
curves.

4.
Low-frequency
testing
principle,
capable
of
testing
CTs
with
knee
points
up
to
45kV.

5.
One-click
CT
DC
resistance,
excitation,
ratio,
and
polarity
testing.

Phase
measurement꞉
accuracy ±5min, resolution꞉ 0.5min

CT
PT
Analyzer

MS‑601D
CT/PT
Analyzer

TECHNICAL
PARAMETERS


















CT
(Protection,
Metering)





























































PT

Volt-ampere
characteristic
(excitation
characteristic)
curve



Volt-ampere
characteristic
(excitation
characteristic)
curve

Automatic
inflection
point
value














































Automatic
inflection
point
value

Automatic
5%
and
10%
error
curves








































Turns
ratio
measurement

Transformation
ratio
measurement









































Polarity
determination

Ratio
difference
measurement
















































Ratio
difference
measurement

Phase
(angle
difference)
measurement



































Phase
(angle
difference)
measurement

Polarity
determination




























































AC
withstand
voltage
test

Primary
current
test































































Secondary
load
test

AC
withstand
voltage
test






















































Secondary
winding
test

Secondary
load
test































































Core
demagnetization

Secondary
winding
test


Core
demagnetization

45

Battery
Testing
Series

MS‑3982
Battery
Discharge
Tester

TECHNICAL
PARAMETERS


DC110V,
220V,
88-264V,
100A

MAIN
FEATURES

When
the
battery
is
offline,
it
acts
as
a
discharge
load,
continuously
regulating
the
discharge
current
to
achieve


a
set
constant
current
discharge.
During
discharge,
the
instrument
automatically
stops
discharging
when
the
battery


pack
terminal
voltage
or
cell
voltage
drops
to
the
set
lower
limit,
when
the
set
discharge
time
or
discharge
capacity


is
reached,
and
records
all
valuable,
continuous,
real-time
process
data.

Discharge
voltage











DC88V-264V

Discharge
current











0-100A

Operating
mode













Standalone
 mode,
 parallel
master
mode,


parallel
slave
mode,
remote
control
mode

Cell
voltage
acquisition





Multi-band
RF
wireless
module,
communication
distance


can
reach
more
than
100
meters,
compatible
with


2V/4V/6V/12V
single
battery
voltage
monitoring,
1
to
25


groups
of
RF
wireless
monitoring
modules,
can
monitor
up


to
300
batteries,
a
single
wireless
monitoring
module
can


monitor
12
single
batteries

MS‑3985
Battery
Charge


And
Discharge
Tester
Load
Group


TECHNICAL
PARAMETERS


220V,
40A
Charge

100A
Discharge

MAIN
FEATURES

This
product
integrates
constant
current
discharge,
intelligent
charging,
cell
monitoring,
and
activation.


1.
DC
220V
charge
and
discharge
function

2.
Constant
current
discharge
function
for
battery
packs

3.
Intelligent
charging
function
for
battery
packs

4.
Activation
function

Charge
voltage
 DC190V-300V

Charge
current

Discharge
voltage DC176V-270V

0-40A

Discharge
current 0-100A

Current
accuracy

Voltage
accuracy 0.5%

1%

46

MS‑3986
Load
Capacity
Battery
Tester

TECHNICAL
PARAMETERS



DC
48V/110V/220V
Charge
40A
Discharge
50A

MAIN
FEATURES

When
the
battery
is
offline,
the
instrument
acts
as
a
discharge
load,
continuously
controlling
the
discharge
current


to
achieve
a
set
constant
current
discharge.
During
discharge,
the
instrument
automatically
stops
discharging
when


the
battery
pack
terminal
voltage
or
cell
voltage
drops
to
the
set
lower
limit,
when
the
set
discharge
time
or
capacity


is
reached,
and
records
all
valuable,
continuous,
real-time
process
data.

1.
DC
220V
charge
and
discharge
function꞉

2.
High-precision
resistors
are
used
to
avoid
red-heating.

3.
The
cell
monitoring
module
uses
long-distance
RF
wireless
communication
to
transmit
voltage
data.

4.
The
wireless
data
acquisition
box
monitors
each
battery
cell.

5.
Data
is
transmitted
between
the
cell
monitoring
module
and
the
main
unit
of
the
charge
and
discharge


instrument.

Charging
voltage
 DC10-300V

Discharging
voltage
 DC10-300V

Charging
current 0-40A

Discharging
current



Standalone
mode,
parallel
master
mode,


parallel
slavemode,
remote
control
mode

0-50A

Operating
modes



MS‑3006
Battery
Internal
Resistance
Meter

TECHNICAL
PARAMETERS


Measures
internal
resistance
and
performance
evaluation
of
single-cell
batteries,
battery


packs,
and
batteries
with
connection
resistors
(optional).

MAIN
FEATURES

1.
Intelligent,
digital
design
for
accurate
measurement
and
simple
operation.

2.
Weighs
less
than
0.45
kg
and
is
handheld.

3.
Meets
various
battery
internal
resistance
testing
standards.

4.
Four-terminal
multi-purpose
test
clip
combines
the
functions
of
a
test
clip
and
a
probe.

Internal
resistance 0.0mΩ
to
120mΩ

Voltage
 0.000V
to
25V

Connection
resistance


measurement
range 0.0mΩ
to
65.0mΩ

Minimum
measurement Internal
resistance
0.001mΩ

47