GT-CYRM-12

Atmospheric sealed air insulated switchgear

1 Summary

1.1 Scope of application

The GT-CYRM-12 Atmospheric pressure sealed air insulated switchgear adopts air insulated green low-carbon, digital intelligence, technology empowerment, new technology, and high-quality products, integrating intelligent distribution network technology resources to provide "smart equipment" for the construction of China's distribution network.

1.2 Product main features

• Vacuum arc extinguishing and miniaturization design

• Air insulated sealing box

• Intelligent

• Modular design

1.3 Innovation points

High safety performance

• Self healing ability with air insulation structure, eliminating the risk of sulfur hexafluoride (SF6) inflation belt pressure leakAge

• Atmospheric pressure air insulation sealing, low-carbon and environmentally friendly innovative atmospheric pressure air insulation sealing box, isolates dust, dirt, and humid air in the operating environment, ensuring that the product insulation system is stable and effective throughout its lifespan

• The structure is simple, stable, and has a high mechanical lifespan. It can also be equipped with the latest "Jubang Smart Cloud Platform Product" developed by Jubang Group to achieve the construction of intelligent distribution network automation. Products that truly integrate primary and secondary technologies can isolate faults on site, reduce power outages, and form a solution for isolating and quickly recovering line faults, improving power supply reliability and restoring power supply

① Video monitoring

②Real time monitoring and fault warning

③ Preventive maintenance

XGW-12

Box-type switching substation (Ring main box)

1 Summary

1.1 Scope of application

Box-type switching station (ring cage) is mainly used for accepting and distributing electric energy in 10kV cable ring grid power supply or terminal power supply system. This product is equipped with GT-SRM-12 series SF6 gas insulated ring main unit and GTRM-12 type Solid insulated ring main unit, which has the functions of full insulation, full sealing, dust proof, corrosion resistance and maintenance free. It can realize the combination of different schemes and meet various wiring modes. The ring main unit in the opening and closing station can also be combined with 10kV power supply PT, distributed power module, DTU, communication control terminal to realize the automation of medium voltage distribution network, which greatly improves the reliability of the urban power supply and distribution network. Its simple, convenient, flexible connection combination, economic, reliable, durable structural features, become the distribution network cable engineering of the first choice of equipment

1.2 Installation conditions

Altitude: ≤ 2000m;

Environment temperature :-40°℃ \~+40°℃, the average temperature within 24 hours does not exceed 35℃;
Environment humidity: Daily average ≤ 95%, monthly average ≤ 90%;

Installation environment: No violent vibration and impact, and no fire, explosion risk place;

Seismic capacity :8 degrees, ground horizontal acceleration ≤ 0.4g, ground vertical acceleration ≤ 0.2g.

Note: If the operating environment exceeds the above range, please contact our company.

1.3 Product main features

The internal configuration of SF6 gas insulated ring main unit or Solid insulated ring main unit, with fully insulated, fully sealed, miniaturized, maintenance-free and other features, can be free from the impact of the external environment;

The modular design can realize the free combination of different modules to meet the requirements of different power supply schemes;

To meet the requirements of distribution network automation upgrade;

There are a variety of box materials to choose from, box protection level up to IP43.

2 Model and meaning

3 Main technical parameters

4 Ordering instructions

① The number of units, the number of incoming and outgoing and the combination of optional models;
② Design drawings;

③Material and appearance requirements of outdoor box.

GT-DFW-12

Outdoor cable distribution box

1 Summary

1.1 Scope of application

GT-DFW -12 outdoor high-voltage cable distribution box is used for receiving and distributing electric energy in 10kV cable loop network power supply or terminal power supply system. Its simple separable cable terminal has the functions of full insulation, full seal, dust proof, corrosion resistance and maintenance free. Its simple, convenient, flexible connection combination, economic, reliable and durable structural features, become the distribution network cable engineering of the first choice of equipment.

1.2 Product features

Prefabricated silicone rubber closed plug structure, fully insulated, fully sealed;

Live can touch separable cable terminal and live cannot touch separable cable terminal are available for choice; Dustproof, moisture-proof, flood resistance, corrosion resistance, suitable for indoor and outdoor operating environment;

Strong expansibility, flexible combination, to meet a variety of warp requirements;

Maintenance-free, small size, compact structure, easy installation and maintenance, beautiful shape;
It can be equipped with electric display, short circuit fault indicator and arrester.

2 Model and meaning

3 Normal overall dimensions

GT-DFW -12 Cable distribution box uses insulated through-wall sleeve as the cable connection master plate. In addition to the advantages of conventional branch box, it also has the advantages of short length, clear cable arrangement, three-core cable does not need large span, and adopts the current 630A bolt fixed connection type cable joint.

The Incoming and outgoing lines are flexible, and there can be up to 7 branches of the Incoming and outgoing lines, which can provide reasonable solutions to different customer requirements.

4 Sample installation diagram

4.1 Example 1 Four-way incoming/outgoing line

Each phase consists of two European front joints and two European rear joints, and a European butt sleeve in the middle is connected. The end of the European rear joint is blocked with an insulator and a semi-conductive end cap. See the picture below for examples:

4.2 Example 2 Two in three out

Each phase consists of three Euclidean front joints and two Euclidean back joints. The middle is connected with European butt casing. The end of the European rear joint is blocked with an insulator and a semi-conductive end cap. See the picture below for examples:

Note: Cable branches can be expanded or reduced as desired.

5 Primary plan drawing

Plan number 01 02 03 04 05余 余 余 余 余 余 余 余 余Primary system diagram 4 V 4 V 中 4中中中
Model specifications		GTDFW □ -12-11-630	GTDFW □ -12-12-630	GTDFW □ -12-13-630	GTDFW □ -12-23-630	GTDFW □ -12-24-630
Majorcomponents	Through-the-wall casing	3	3	3	3	3
	Touchablefront plug	6	6	6	6	6
	Touchable rearplug		3	3	9	12
	Rear plugarrester	Optional	Optional	Optional	Optional	Optional
	Live display	Optional	Optional	Optional	Optional	Optional
	Fault indicator	Optional	Optional	Optional	Optional	Optional

6 Overall dimension diagram

YB-12

Intelligent integrated substation

1 Summary

1.1 Scope of application

YB -12 series intelligent integrated substation is a high-voltage switchgear distribution transformer and lowvoltage distribution device, according to a certain wiring scheme arranged into one of the factory prefabricated indoor and outdoor compact distribution equipment, that is, high-voltage power, transformer, low-voltage distribution and other functions organically combined together. Installed in a moisture-proof, rust-proof, dust-proof, rat-proof, fireproof, anti-theft, septa, fully closed, mobile steel structure or non-metallic box, mechanical and electrical integration fully closed operation;

Widely used in urban power grid transformation, residential communities, high-rise buildings, industrial and mining, hotels, shopping malls, airports, railways, oil fields, wharfs, highways and temporary electricity facilities and other indoor and outdoor places.

1.2 Installation conditions

Altitude: ≤ 1000m;

Lrviunment temperalure. upper Imit ur enviomment ai temperature T4u , luwer Imi -zoc, Environment temperature: Upper limit of environment air temperature +40C, lower limit -25C ;

Relative humidity: The daily average is not more than 95%, the monthly average is not more than 90%;
Installation place: No fire, explosion danger, conductive dust, chemical corrosive gas and violent vibration place;
When the above conditions cannot meet the use requirements, the user shall negotiate with the manufacturer.

1.3 Product features

The basic structure of the box is divided into "目 " shape and "品 " shape, box skeleton is welded with high-quality channel steel and Angle steel, with high mechanical strength, the box is made of aluminum alloy profile, with better anticorrosion ability, the overall beautiful shape can be coordinated with the surrounding environment by painting coloring, carefully designed bottom lifting device, It provides great convenience for installation, transportation and movement.

There are independent high voltage room, transformer room and low voltage room in the box transformer. The lighting of each room will be opened automatically with the opening of the door. High voltage room is equipped with high voltage ring network switch equipment, can be selected according to user needs pressure type, vacuum type load switch, and has the "five prevention" function, when the current limiting type of high voltage fuse, a phase of the fuse fused, load switch automatically open, to avoid the failure caused by the lack of phase operation.

The transformer room adopts natural ventilation and automatic control of forced cooling air cooling device, with automatic control of the exhaust system with temperature changes, can effectively control and reduce the temperature in the box, to meet the operation requirements, according to user requirements can also be used to prevent condensation device, along the track can be conveniently from the transformer room on both sides of the door. Box material can prevent rain and dirt from entering, with long-term outdoor use conditions, to ensure anticorrosion, waterproof, dust-proof performance, long service life, simple maintenance, beautiful appearance.

① Transformers can be dry-type or oil-immersed.

②The low-voltage chamber has the overall function of low-voltage switchgear, which can be selected and combined arbitrarily by users.

③Enclosure material: Composite plate, stainless steel composite plate, aluminum plated zinc plate, stainless steel plate, metal carved plate.

④Structure features: High voltage structure is reasonable and compact, can choose HXGN17, XGN15 ring main unit, all with five anti interlocking function. The transformer natural ventilation and automatic ventilation cooling system can be used for dry and oil transformers.

⑤Low-voltage room: Various power distribution schemes can be adopted according to user's requirements, with various functions such as power distribution, lighting distribution, reactive power automatic compensation, electric energy metering, etc., and equipped with automatic lighting system

2 Model and meaning

3 Box variable performance parameters

6 Example diagram of typical scheme

The typical scheme is shown in Attached 1

7 Foundation and plan

See Attached 3 for substation basic drawing and Attached 2 for substation layout drawing. Users can choose according to their needs.

8 Installation, use and maintenance

In addition to the provisions required by the power department in the aspects of installation, acceptance, handover test, operation and maintenance, intelligent integrated substation should pay attention to the following matters:

① Users should check carefully when receiving the goods according to the relevant provisions. For the products that are not installed immediately, they should be stored in appropriate places according to the provisions of normal use conditions.

②The product should be lifted at the bottom of a special spreader.

③ The level of the product is placed on the basis of doing a good job in advance, and then the gap between the product base and the foundation is sealed with cement sand, so as to avoid rainwater entering the cable room, and access the high and low voltage cables through the bottom sealing plate of the high and low voltage room.

④After installation, the product should be earthed reliably: the two main earthing terminals on the channel steel of the power station base, the neutral point of the transformer and the enclosure, and the pile head under the arrester should be earthed respectively by the installation department. All earthing devices should share one earthing device, whose earthing resistance should be less than 4 ohms, and there should be no less than two earthing leads leading from the earthing network to the product.

⑤The following items should be inspected and tested before the product is put into operation after installation or maintenance

a、Whether the substation is clean;

b、Whether the operating mechanism is flexible;

c、Whether the main electrical equipment on and off is flexible and reliable;

b、Whether the on-off of electrical auxiliary device is reliable and accurate;

e、Whether the meter and the action of the breaker is accurate;

f、 The ratio and wiring polarity of the instrument and transformer are correct;

g、Busbar connection is good, its support insulator, clamp installation is reliable;

h、Whether the setting value of the electric appliance meets the requirements, whether the fuse core specification is correct;

i、 Whether the contacts of the main circuit and the auxiliary circuit meet the requirements of the electrical schematic diagram.

⑥ Maintenance

a、All components in the product are maintained according to their respective technical requirements;

b、If the selected transformer is oil-immersed, it should be inspected by sampling analysis at least once a year according to the regulations;

c、The high voltage side switchgear in operation, after 20 times of load or 2000 times of no-load switching operation, should check the contact situation and loss degree of arc extinguishing device, found abnormal should be repaired or replaced in time;

d、Low voltage switchgear automatic tripping, should check and analyze the tripping reason, to be removed after the fault, can be put back into operation;

e、Lightning arresters should be tested preventatively once a year before the thunderstorm season.

Packing list, certificate of qualification, installation instruction manual, electrical wiring diagram, instructions of the main components and equipment used in this product, key operation tools and spare parts provided in accordance with the Agreement shall be attached.

Attached1 Typical scheme example of high supply and high meter type scheme 1

Attached 3 Basic drawing

11 Ordering instructions

The following information should be provided when ordering

① Substation model and number;

② Transformer type and quantity;

③High-voltage and low-voltage primary wiring scheme and the model and parameters of the main components;

④Material and color of the enclosure

ZGS

Combined transformer

1 Summary

1.1 Scope of application

ZGSCombined transformer (Commonly known as American box transformer), its structure is "品 "type, transformer and high and low voltage equipment are closely connected as one, among them, three sides of the transformer exposed to the air, good heat dissipation conditions, and can be separated from high and low voltage equipment enclosure, easy maintenance.

The transformer adopts chip type oil tank, no oil pillow, fully enclosed S series oil immersed transformer, high and low voltage bushing, tap switch, oil level indicator, pressure release valve, oil release valve and so on are installed on the high voltage chamber body end plate, reasonable position, easy to observe and operate

High voltage room, low voltage room between the steel plate separated, high voltage room, low voltage room transformer is relatively independent, and maintain a complete box to change the whole, compact structure, small volume, light weight. The power distribution switchgear is installed on the high and low voltage side.

1.2 Installation conditions

Cooling condition: Air self-cooling;

Altitude: ≤ 1000m;

Environment temperature: The outdoor environment temperature is not higher than 40℃ and not lower than-45℃: the monthly average temperature is not higher than 30C and the annual average temperature is not higher than 20℃;

Relative humidity: At 25°C, the relative humidity of the air does not exceed 95%, and the average monthly temperature does not exceed 90%;

Shockproof level: Horizontal acceleration is not greater than 0.3m/s2, vertical acceleration is not large 0.15m/ s2; Surrounding environment: Installation environment should be free from obvious pollution, explosive, corrosive gas and dust;

Installation site: There should be no violent vibration and impact, and it is required to be installed on a cement platform or other smooth and solid platform;

When the above conditions cannot meet the use requirements, the user shall negotiate with the manufacturer.

1.3 Product main features

Small size, compact structure, easy installation;

Can be used for ring network, also can be used for terminal, reliable protection of personal safety;

Low damage, low noise and superior performance;

Low temperature rise, strong load capacity.

High voltage interval

The high voltage interval contains high pressure line Incoming sleeve, load switch operating handle, non-excited pressure regulating tap switch, plug-in fuse, pressure release valve, oil temperature gauge, oil level gauge, pressure gauge, oil filling hole, oil discharge valve, etc

Low voltage interval

In the low voltage distribution cabinet, an intelligent undervoltage controller is installed, which has the function of identifying the abnormal voltage of the substation low voltage bus. When the high-voltage one or two-phase fuse is blown and the substation low-voltage measurement voltage is abnormal, the controller sends out an action signal to make the circuit breaker trip. When the three-phase voltage of the low voltage side is lower than 50% of the normal voltage, the controller does not send an action signal, so as to avoid the trip of 10kV high voltage line or power failure maintenance caused by all the low voltage switch trip. Can be installed according to user requirements with telemetry, remote communication function of comprehensive power distribution tester.

2 Model and meaning

3 Transformer performance parameters

6kV, 10kV class S series oil immersed distribution transformer technical parameters

Note: ① The load loss values above the middle slash apply to the Dyn11 or Yzn11 connection group, and the load loss values below the slash apply to the Yyn0 connection group.

②The overall dimension is only for reference in the selection. The final size is subject to the product outline drawing.

6 Typical primary plan

(1) Terminal Type

(2) Ring main type

7 Basic construction

Box substations should be installed on horizontal concrete countertops that are guaranteed to support their weight Most of the weight of the box-type substation is concentrated in the rear of the box where the transformer body is installed. The front cabinet is mostly empty, relatively light weight, so the back of the platform should be strong, can withstand the combined weight of the change, but also requires the front and back table flat (generally, it is not easy to do flat, can make the front side of the cabinet foundation slightly lower than the back side of the transformer body foundation, in place after the concrete closed), to ensure that the box installation is stable.

The size of the platform is shown in Figure (1) and (2)

Technical requirements

① The relevant dimensions participate in the combined dimensions;

② The surface of the concrete base should be smooth, and after the installation of the combined substation, the base should be sealed around with cement;

③The shape of the earthing bar and cable fixing bracket can be determined according to the actual situation;

④Cable fixing frame and earthing bar should be embedded;

⑤The location of the Incoming and outgoing cable holes shall be determined according to the specific situation;

⑥ There must be no less than 1.5m gap on the front of the switch after installation of the combination transformer to facilitate operation

⑦ The earthing net can be made of 12-plated round steel or 30×4 galvanized flat steel, and the resistance of the earthing wire should meet the requirements of the power department.

Note: The size of L, W and H shall be determined according to the actual project configuration

8 Ordering instructions

The following information should be provided when ordering:

① The full model number of the product includes the main circuit scheme number and the auxiliary circuit scheme number;

②Main circuit system combination sequence diagram;

③Installation layout diagram;

④Electrical schematic diagram of auxiliary circuit;

⑤ Voltage, current, time and other setting parameters in the circuit;

⑥ Other special requirements not consistent with the normal use of the product.

ZGS-Z·F-/35

Wind Power Combined Transformer

1 Summary

1.1 Scope of application

ZGSD -Z·F- /35 series combined transformer is a special equipment for grid output after raising the voltage of 0.6-0.69kV from wind turbine to 35kV. The product is the high-voltage load switch, fuse transformer body and other components sealed in the same box, using the transformer insulation liquid as the insulation and heat dissipation medium of the whole product. The product has the features of compact structure, small volume, easy installation, suitable for all kinds of wind power generation sites, is an important supporting equipment of wind power generation system.

1.2 Installation conditions

Altitude: ≤ 2000m;

Environment temperature: -40℃ -+45℃;

Environment humidity: Daily average ≤ 95%, monthly average ≤ 90%;

Installation environment: No violent vibration and impact, and no fire, explosion risk place;

Seismic capacity :8 degrees, ground horizontal acceleration ≤ 0.4g, ground vertical acceleration ≤ 0.2g.

Note: If the operating environment exceeds the above range, please contact our company.

1.3 Structure features

The product has compact structure and good sealing performance. The high-voltage load switch, fuse, transformer body and other components of this product are all sealed in the oil tank. The oil tank is packAged by vacuum oil filling process, which completely removes the moisture in the transformer, and the transformer oil is not in contact with the atmosphere during operation, thus ensuring the insulation performance of the transformer.

Full-range integrated high-voltage current-limiting fuse is used for protection, and the fuse structure is plug-in, which is convenient for future maintenance and replacement. The high and low voltage cabinets are respectively provided with weatherproof enclosures, which are arranged in an "L" shape, and the high voltage cabinet doors are protected by electromagnetic locks with mesh doors.

2 Model and meaning

3 Transformer performance parameters

Rated system voltage :35kV

Low voltage side rated voltage :0.69kV

Rated capacity :630 kVA -1600 kVA

Rated frequency :50Hz

Rated short-time power frequency withstand voltage (low voltage side):5kV

Rated short-time power frequency withstand voltage (high-voltage side):85kV

Rated lightning shock withstand voltage (full wave): 200kV

Protection grade: Oil tank IP68, high and low voltage chamber IP44, IP54

4 Typical primary plan drawing

5 Ordering instructions

The following information shall be provided when ordering.

Primary system diagram scheme and its parameter requirements; Installation layout; Other special requirements that are inconsistent with the normal use of the product.

ZGS-Z·G-/35

Combined transformer for photovoltaic power generation

1 Summary

1.1 Scope of application

ZGS -Z·G-/35 series combined transformer is a new type of booster equipment developed and launched for the special requirements of photovoltaic power generation. It is a special equipment for grid-connected output after the 0.315kV (or 0.27kV, 0.48kV, etc.) voltage emitted by photovoltaic unit is increased to 35kV. The product is the high voltage load switch, fuse. The transformer body and other components are sealed in the same box, and the insulating liquid of the transformer is used as the insulation and heat dissipation medium of the whole product. The product has the features of compact structure, small size, easy installation, etc., suitable for all kinds of photovoltaic power generation sites, is the ideal supporting equipment for photovoltaic power generation system.

1.2 Installation conditions

Altitude: ≤ 2000m;

Environment temperature: -40℃ -+45℃;

Environment humidity: Daily average ≤ 95%, monthly average ≤ 90%;

Installation environment: No violent vibration and impact, and no fire, explosion risk place;

Seismic capacity :8 degrees, ground horizontal acceleration ≤ 0.4g, ground vertical acceleration ≤ 0.2g.

Note: If the operating environment exceeds the above range, please contact our company.

1.3 Product structure and features

Box variable structure is divided into transformer body, high voltage room, low voltage room, testing room, switch operating room and fuse room six compartment, can be divided into "目 " font or "品 " font arrangement.

The product has compact structure and good sealing performance. The high-voltage load switch, fuse, transformer body and other components of the product are sealed in the oil tank. The oil tank adopts vacuum oiling process during encapsulation, completely removing the moisture in the transformer. The transformer oil does not contact with the atmosphere during operation, ensuring the insulation performance of the transformer.

The high voltage side adopts the terminal load switch and the fuse protection, the fuse is the full range of current limiting protection fuse

The outgoing line of the high voltage side adopts the copper busbar structure supported by the high voltage dry sleeve to facilitate the connection of multiple cables. The low voltage outgoing can be directly routed or configured according to customer requirements.

2 Model and meaning

3 Transformer performance parameters

Rated voltage grade:35kV

Rated voltage on low voltage side:0.315kV(0.27kV、0.48kV)

Rated capacity:500kVA-1600kVA

Rated frequency:50Hz

Rated short-time power frequency withstand voltage (low-voltage side):5kV

Rated short-time power frequency withstand voltage (high-voltage side):85kV

Rated lightning shock withstand voltage (full wave):200kV

Protection grade: Tank IP68, high and low voltage chamber IP44, IP54

4 Typical primary scheme diagram

5 Ordering instructions

The following information shall be provided when ordering.

Primary system diagram scheme and its parameter requirements; Installation layout; Other special requirements that are inconsistent with the normal use of the product.

KYN61-40.5

Metal clad switchgear

1 Summary

1.1 Scope of application

KYN61-40.5 switchgear is equipped with excellent performance ZN85A, ZN85B vacuum circuit breakers, Schneider SF1, SF2, ABB HD4, or Als FP series sulfur hexafluoride circuit breakers. The cabinet adopts an assembly structure, which improves the appearance quality and manufacturing accuracy; The busbar adopts heat shrink insulation material or epoxy coating insulation method to optimize the electrode shape, and the cabinet structure is compact, and it has completely "five prevention" functions. KYN61-40.5 switchgear is used in the 40.5kV three-phase AC 50Hz power system, as a distribution room for power plants, substations, and industrial and mining enterprises to receive and distribute electrical energy. It has functions such as control, protection, and monitoring of circuits. In addition to being widely used in general power systems, it can also be used in frequently operated places. The environmental conditions for use are in accordance with GB3906 "3.6-40.5kV AC Metal Enclosed Switchgear" The specified normal usage conditions. This product meets the standard of lEC60298"AC Metal Enclosed Switchgear and Control Equipment with Rated Voltages of 1KV and Above and 52KV (Including)".

1.2 Installation conditions

Altitude: ≤ 1000m;

Environment temperature: Upper limit of environment air temperature +40C, lower limit -15C;

Relative humidity: the daily average relative humidity is no more than 95%; Monthly average relative humidity is not greater than 90%;

Seismic level: seismic intensity does not exceed 8 degrees;

Not suitable for places with obvious pollution such as corrosive or combustible gases, water vapor, etc.

If the above normal service conditions are exceeded, the user can negotiate with the manufacturer to determine.

2 Model and meaning

3 Overall dimension and weight

4 Technical parameters

4.1 Technical parameters of switchgear

5 Product structure

The structure of the switchgear can be divided into two parts according to its composition: the cabinet body and the handcart. The cabinet body is bent from steel plate and assembled with bolts to form. According to the functions of the electrical equipment inside the cabinet, the typical plan can be divided into four parts: relay instrument room, handcart room, cable room, and busbar room, each separated by a earthed metal partition. Its enclosure protection level is |P4X: When the handcart door is opened and the circuit breaker handcart is in the open/test position, the protection level is IP2X. This switchgear has other primary solutions such as cable Incoming and outgoing, overhead Incoming and outgoing, busbar connection, isolation, voltage transformer, lightning arrester, etc. Current transformers, earthing switches, etc. are installed in the cable room, providing ample space for the connection of multiple cables. The contact box is equipped with a metal valve, which automatically opens when the handcart moves from the disconnected/test position to the working position. When the handcart moves in the opposite direction, it automatically closes, forming effective isolation.

5.1 Enclosure and partition

The enclosure and partition of the switchgear are made of cold-rolled steel plates processed and bent by CNC machine tools, and then bolted together. Therefore, the assembled switchgear can ensure the uniformity of structural dimensions. The switchgear is divided into a circuit breaker room, main busbar room, cable room, and relay instrument room, with each part separated by a earthed metal partition

5.2 Handcart

Handcarts can be divided into circuit breaker handcarts, voltage transformer handcarts, isolation handcarts, etc, according to their purpose. Each type of handcart has the same external dimensions, and handcarts with the same purpose have interchangeability. The handcart has test/isolation positions and working positions inside the cabinet, and each position is equipped with interlocking devices to ensure that the handcart cannot move freely when it is in the above two positions. The handcart is equipped with a new fully insulated vacuum circuit breaker or sulfur hexafluoride circuit breaker. The handcart frame is equipped with a screw nut pushing mechanism and an overrunning clutch. The screw nut pushing mechanism can be easily operated to move the handcart between the disconnected/tested position and the working position. With the self-locking property of the screw nut, the handcart can be reliably locked in the working position, preventing accidents caused by the movement of the handcart due to the action of electric power. The overrunning clutch operates when the handcart moves back to the off/test position and enters the working position, causing the operating shaft to automatically detach from the screw shaft and idle, which can prevent accidental operation and damage to the propulsion mechanism.

5.3 Circuit breaker isolation chamber

A specific track is installed in the circuit breaker isolation room for the handcart to move. When the circuit breaker moves between the test position and the working position, the isolation valve automatically opens or closes, ensuring that workers do not touch live objects. The handcart can be operated with the cabinet door closed, and the position of the handcart inside the cabinet can be seen through the inspection window, as well as any functional signs on the vehicle.

5.4 Busbar compartment

The main busbar is supported by the branch busbar and busbar sleeve. Busbar bushing separating adjacent cabinets can effectively prevent the spread of accidents and support the main busbar. The busbar adopts shrinkAble insulating bushing or fluidizing coating process to form reliable composite insulation.

5.5 Cable compartment

PT, earthing switch, lightning arrester, and multiple cables can be installed in the cable room.

5.6 Relay room

The indoor panel and panel of relay can be installed with control, protection components, metering, display instrument, live monitoring display and other secondary components.

5.7 Locking device

The switchgear has reliable interlocking devices, effectively ensuring the safety of operators and equipment;

a. When the earthing switch is in the open position, the handcart can only be moved from the test/isolation position to the working position; And the back door cannot be opened, preventing accidental entry into the electrified compartment;

b. When the handcart is completely pulled out of the cabinet or when the handcart is in the testing/isolation position inside the cabinet and the earthing switch is interlocked and unlocked, the earthing switch can be closed

c. When the handcart is in the working position, the earthing switch cannot be closed to prevent accidental closing of the earthing switch when energized;

d. When the earthing switch is in the closed position, the handcart cannot be moved from the test/isolation position to the working position, which prevents the handcart from being moved to the working position when the earthing switch is in the closed position

e. The circuit breaker handcart can only be operated when it is in the test/isolation position or working position, and after the circuit breaker is closed, the handcart cannot move, preventing live loads from accidentally pushing and pulling the circuit breaker.

f. Electrical interlocking can be installed between cabinets.

5.8 Earthing device

In the cable room, there are separate 5 × 40mm earthing busbar, which can penetrate adjacent cabinets and have good contact with the cabinet body

5.9 Voltage monitoring device

The voltage monitoring sensor or the combination of voltage monitoring sensor and earthing switch is integrated, and the display device is placed on the front of the switchgear, and can emit visible light at 50% of the rated voltage, which has a relatively reliable protective measure for personal safety.

5.10 Anti condensation measures

To prevent the harm caused by condensation in high humidity or climate environments with significant temperature changes, heaters are installed in the circuit breaker room and cable room respectively.

6 Transportation and Storage

The following points should be noted during transportation and storage of switchgear:

① Don't tip over, invert, or suffer from severe vibrations to prevent approaching a fire source.

② It should be protected from rain to prevent the product from getting damp.

③ Do not disassemble electrical products and parts at will.

7 The following documents shall be provided for the switchgear product.

① Shipping list

② Product certificate and factory test report

③Operating Instruction

④Related electrical drawings

⑤Main component manual

⑥ Cabinet door keys, operating handles, and spare parts specified in the contract

KYN28A-12

Metal clad switchgear

1 Summary

1.1 Scope of application

KYN28A-12Metal clad switchgear (hereinafter referred to as switchgear) is suitable for three-phase AC 50Hz power system. It is mainly used for power transmission of power plants, small and medium-sized generators, power distribution of industrial and mining enterprises and institutions, power reception and power transmission of secondary substations of electric power systems, and starting of large high-voltage motors, etc., to realize control, protection and monitoring. This switchgear meets the requirements of GB/T11022, GB/T3906 and other standards, and has the interlocking functions of preventing the circuit breaker from being pushed and pulled with load, preventing the circuit breaker from being opened and closed by mistake, preventing the earthing switch from being closed when it is in the closed position, and preventing the earthing switch from being mistakenly closed when it is charged. It can be equipped with both ZN63A-12 vacuum circuit breaker developed by our company and VD4 vacuum circuit breaker of ABBcompany and VB2 vacuum circuit breaker of GE company in the UnitedStates

1.2 Installation conditions

Altitude: ≤ 1000m;

Environment temperature: Upper limit of environment air temperature +40C, lower limit -15C;

Relative humidity: the daily average relative humidity is no more than 95%; Monthly average relative humidity is not greater than 90%;

Seismic level: seismic intensity does not exceed 8 degrees;

Suitable for condensation and class ∥ polluted environment.

When the above conditions exceed the normal environment specified in GB3906, the user shall negotiate with the manufacturer.

2 Model and meaning

3 Overall dimension and weight

4 Technical parameters

4.1 Switchgear technical parameters

Note:

① When the circuit breaker is used to control the 3-10kV motor, if the starting current is less than 600A, the metal zinc oxide arrester must be added. The specific requirements shall be negotiated between the user and our company.

② When the circuit breaker is used to open and disable the container group, the rated current of the capacitor bank should not be greater than 80% of the rated current of the circuit breaker.

5Product structure

The switchgear is composed of a cabinet and a central withdrawable part (Handcart). The cabinet is divided into four separate compartments, the protection level of the enclosure is IP4X, and the protection level of the compartments and the circuit breaker room when the door is opened is IP2X. It is equipped with overhead Incoming and outgoing lines, cable Incoming and outgoing lines and other functional schemes, which can become a power distribution device in various forms after arrangement and combination. The switchgear can be installed from the front debugging and maintenance, so it can be composed of back-to-back dual arrangement and wall installation, improve the safety of switchgear, flexibility, reduce the footprint.

5.1 Enclosures and others

The case of the switchgear is made of aluminum and zinc sheet steel, machined by CNC machine with multiple hemming process. In this way, the whole cabinet not only has high precision, strong corrosion and oxidation resistance, but also because of the use of multiple flanging process, so that the cabinet than other similar equipment cabinet overall light weight, high mechanical strength, beautiful appearance. The cabinet body adopts assembly structure and is connected by riveting nuts and high strength bolts. In this way, the processing and production cycle is short, the parts are universal, the area is less, and the production is easy to organize.

5.2 Handcart

The handcart skeleton is also made of copper plate and assembled by CNC machine tool. The handcart is insulated and matched with the cabinet, and the mechanical interlock is safe, reliable and flexible. According to different uses, handcarts are divided into circuit breaker handcarts, voltage transformer handcarts, metering handcarts and isolation handcarts. All kinds of handcarts change according to modulus and building blocks, and handcarts of the same specification can be 100% freely exchanged. The handcart has an isolation position/test position and a working position in the cabinet, and each position has a positioning device to ensure the reliability of the interlock. It must be operated according to the interlock misoperation prevention procedure

All kinds of handcars adopt nut and screw to push and exit. Its operation is light and flexible, suitable for all kinds of personnel on duty to operate. When the cabinet needs to be removed, a special transfer car can be used to conveniently take it out for all kinds of inspection and maintenance; And adopt the middle type, the whole car size is small, inspection and maintenance are very convenient.

Breaker The trolley is equipped with vacuum breaker and other auxiliary equipment. When the mobile car is transported into the circuit breaker room of the cabinet, it can be reliably locked in the disconnect position/test position; And the cabinet position display light will show its position, and only after it is completely locked, can the pushing mechanism be shaken to push the hand car to the working position. After the hand car to the working position, the push handle is not shaken, the corresponding position display light will show its position, the mechanical interlock can reliably ensure that the hand car only in the working position or test position, the circuit breaker can be closed; And only in the opening state, the circuit breaker can move.

5.3 Compartments

The main electrical components of switchgear have their own compartments, namely: circuit breaker car room, busbar room, cable room, relay instrument room. The protection grade of each compartment reaches IP2X; In addition to the relay outside, the other three compartments have their own pressure relief channels. As a result of the middle type of the form, the position of the cable room is greatly increased, so the equipment can be connected to multiple cables.

Circuit breaker compartment

Rails are installed on both sides of the compartment for the hand car to move in the cabinet between the isolation position, test position and working position. The bulkhead (valve) of the silent contact box is installed behind the rear wall of the hand compartment. When the handcar moves from the disconnecting position/test position to the working position, the valve on the upper and lower quiet contact boxes are linked with the handcar and automatically open at the same time; When moving in the opposite direction, the valve will automatically close until the hand car relocates to a certain position and completely covers the static contact box, forming an effective isolation. At the same time. because the upper and lower valves are not linked, the valve on the live side can be locked during maintenance, so as to ensure that the maintenance personnel do not touch the live body. When the door of the circuit breaker room is closed, the hand car can also be operated. Through the door inspection window, you can observe the position of the handcar in the compartment, the closing and opening display, and the energy storage status.

Busbar Compartment A

The main bus is a single splicing through each other, fixed by a busbar and static contact box. The main busbar and the contact busbar are rectangular copper bars: used for large current load with two busbars. The busbar is bolted to the static contact box and the main busbar. No other support is required. For special needs, the busbar can be covered by heat shrinkAble sleeve and connecting bolt insulation sleeve and end cap. Busbars in adjacent cabinets are fixed with bushing. In this way, the air buffer retained between the connecting bus bars can prevent it from penetrating through the melting bushing if there is an internal fault arc. 3. It can effectively limit the accident in the compartment and not spread to other cabinets

Cable compartment

The switchgear is of middle type, so the cable compartment has more space. The current transformer and earthing switch are installed on the back wall of the compartment, and the arrester is installed on the back lower part of the compartment. After removing the handcart and the extractable horizontal partition, the construction personnel can enter the cabinet from the front for installation and maintenance. The cable connecting conductor in the cable room can be 1 to 3 single-core cables per phase, and 6 single-core cables can be connected per phase if necessary. The bottom of the connecting cable cabinet is prepared with a slotted detachable non-metallic sealing plate or non-magnetic metal sealing plate to ensure convenient construction.

Relay instrument room

Relay protection components, meters, live monitoring indicators, and special reguirements of secondary eguipment can be installed in the relay meter room. The control line is laid in a wire slot with enough space, and a metal cover plate can isolate the secondary line from the high voltage chamber. The left slot is reserved for the introduction and extraction of the control wire, and the small wire in the switchgear cabinet itself is laid on the right. In the top plate of the relay instrument room, there is also a small busbar crossing hole for easy construction. When wiring, the top cover plate of the instrument room can be turned over to facilitate the installation of the small bus bar.

5.4 Prevent misoperation of the interlock device

The switchgear is equipped with a safe and reliable interlocking device, which fully meets the requirements of five defenses.

① The door of the instrument room is equipped with a suggestive button or KK type transfer switch to prevent mis-closing or mis-opening of the circuit breaker.

② When the circuit breaker is in the test or working position, the circuit breaker can be closed and operated. After the circuit breaker is closed, the circuit breaker cannot be moved, which prevents the circuit breaker from being pushed and pulled by mistake with load.

③ Only when the earthing switch is in the opening position, the circuit breaker can move from the test/isolation position to the working position. The earthing switch can be closed only when the circuitbreaker is in the test/ isolation position (the earthing switch may have a voltage display device). In this way, the earthing switch can be prevented from being switched on incorrectly and the circuit breaker can be closed when the earthing switch is in the closing position.

④ The circuit breaker is really in the experimental or working position, and It can only be opened manually, but not closed.

⑤When the circuit breaker is in the working position, the secondary plug is locked and cannot be pulled out.

⑥ Each cabinet can be equipped with electrical interlock.

The switching equipment can also be installed on the earthing switch operating mechanism of the electromagnet locking device to improve reliability, its order according to the needs of users to choose.

5.5 Pressure release device

In the circuit breaker compartment, bus room and cable room above are provided with a pressure release device, when the circuit breaker or bus internal fault arc, with the appearance of arc, the switchgear internal pressure rise, the top equipment pressure relief metal plate will be automatically opened, release pressure and discharge gas, to ensure the safety of the operator and the switchgear.

5.6 Position interlock between secondary plug and handcart

The connection between the secondary wire on the switchgear and the secondary wire on the circuit breaker is achieved through the secondary plug. The moving contact of the secondary plug is connected with the circuit breaker through a nylon bellows expansion tube, and the secondary static contact seat is arranged on the upper right side of the switchgear compartment. Only when the circuit breaker is in the test/isolation position, can the secondary plug be plugged in and removed. When the circuit breaker is in the working position, the secondary plug is locked and cannot be removed due to the mechanical interlocking effect. Because the closing mechanism of the circuit breaker hand car is locked by electromagnet, the circuit breaker hand car can only be switched off before the secondary plug is not connected, so it cannot be closed.

5.7 Live display unit

If the user has the demand, the switch cabinet is provided with an optional part to detect the primary circuit operation, namely, the live display device. The device consists of high voltage sensor and portable display two units, connected by the user's external conductive wire as a whole, the device can not only prompt the high voltage circuit live condition, but also can cooperate with the electromagnetic lock, to achieve the forced lock switch handle, screen door, to prevent the live close earthing switch, prevent stray into the live space, so as to improve the anti-error performance of supporting products.

5.8 Prevent condensation and corrosion

In order to prevent the risk of condensation in the climate environment with high temperature humidity or temperature change. Heaters are installed in the circuit breaker room and cable room respectively for use in the above environment and to prevent corrosion.

5.9 Earthing device

There is a 40x40mm earthing copper bar in the cable room, which can run through the adjacent cabinets and make good contact with the cabinets.

This earthing bar is used for directly earthing components. At the same time, because the whole cabinet is assembled with aluminum-coated zinc plates, the whole cabinet is in a good earthing state, ensuring the safety of operators touching the cabinet.

6 Transportation and storage

Attention should be paid to the following points during transportation and storage of switchgear:

① Do not tip over, turn upside down and suffer severe vibration to prevent from getting close to the fire source.

② It should be protected from rain to avoid dampness of the product.

③Do not disassemble electrical products and parts at will

7 The following documents shall be provided for the switchgear product.

① Product qualification certificate;

② Product packing list;

③ Product delivery test report;

④Product instruction manual;

⑤Equipment list;

⑥Secondary wiring diagram;

⑦ Drawing products according to the map catalog and equipment table supply;

⑧Medium handcar operation handle, earthing switch operation handle and medium handcar transfer car (the contract amount of less than 10 sets, each 5 sets with a set, more than 10 sets, each additional 10 sets, add 1 set).

8 Ordering instructions

The following information should be provided when ordering:

① Main wiring scheme number and single wire system drawing, arrangement drawing and layout drawing;

②Secondary schematic diagram, terminal arrangement diagram, if no terminal arrangement diagram, according to the manufacturer's terminal block arrangement;

③ The model, specification and quantity of the electrical components of the switch cabinet;

④Summary of electrical equipment;

⑤When the bus structure (bus structure between two cabinets and bus structure between wall cabinets) is needed, the span and height size shall be provided;

⑥The special environmental conditions for the use of the switch cabinet should be put forward when ordering;

⑦ The type and quantity should be mentioned when other or more accessories are needed.