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1987 ESTABLISHED IN
OUR COMPANY PROFILE
Founded in 1987, ZG has always adhered to technology innovation and has become one of the world's leading company in lightning protection field. ZG was listed on the Shenzhen Stock Exchange in 2015 (stock code: 300414), which is the first listed Lightning Protection Company in China.
With over 30years of expertise in lightning and EMP protection, ZG is well-positioned to offer professional lightning protectionsolutions for wind power since 2014.
OUR GLOBAL PARTNERS IN WIND POWER FIELD
INNOVATION & GLOBAL PARTNERSHIP
• Products used in 20,000+ wind turbines all over the world
• Varieties of SPD supplied to Wind Power market: 100+
• Quantities of SPD supplied to the Wind Power market in 2023: 230,000+
Applications in various systems
Converter
Pitch system
Main control system
Generator
Deicing system
Anemorumbometer
Box-type transformer substation
Fire extinguishing system
LIGHTNING PROTECTION SOLUTION FOR EACH SYSTEM
Converter
Generator-side Power Supply Protection
690 V/750 V power supply system
• Maximum continuous operating voltage Uc: 850 V AC
• Nominal discharge current (8/20 μs) In: 20 kA
• Maximum discharge current(8/20 μs)Imax: 40kA
ZGG40-850(3+1)f
• Voltage protection level Up: 4.0 kV
• External dimensions: 90mm×72 mm×68 mm (not including remote signalling terminal)
950 V/1140 V power supply system
• Maximum continuous operating voltage Uc: 1260 V AC
• Nominal discharge current (8/20 μs) In: 15 kA
ZGG30-1260(3+1)Zf
• Maximum discharge current (8/20 μs) Imax: 30kA
• Voltage protection level Up: 5.0 kV
• Externaldimensions: 90mm×144 mm×65.5 mm (not including remote signalling terminal)
1380 V power supply system
• Maximum continuous operating voltage Uc: 1500 V AC
• Nominal discharge current(8/20 μs) In: 20 kA
• Maximum discharge current (8/20 μs)Imax: 40 kA
• Voltage protection level Up: 6.5 kV
• Externaldimensions: 150 mm×108 mm×67 mm (not including remote signalling terminal)
Converter Grid-side Power Supply Protection
ZGG40-1000(3+0)
△ CE
690 V/750 V power supply system
• Maximum continuous operating voltage Uc: 750 V AC
• Nominal discharge current(8/20μs)In: 15 kA
• Maximum discharge current(8/20 μs)Imax: 30 kA
• Voltage protection level Up: 3.0 kV
• External dimensions: 90 mm×54 mm×68 mm (not including remote signalling terminal)
950 V/1140 V power supply system
• Maximum continuous operating voltage Uc: 1000 V AC
• Nominal discharge current (8/20 μs) In: 20 kA
• Maximum discharge current(8/20 μs)Imax: 40kA
• Voltage protection level Up: 4.0 kV
• External dimensions: 90 mm×108 mm×68 mm (not including remote signallingterminal)
690 V power supply system
• Maximum continuous operating voltage Uc: 760 V AC
• Impulse discharge current (10/350 μs)limp: 12.5 kA
• Voltage protection level Up: 3.5 kV
· External dimensions: 150mm×108mm×67 mm (not including remote signalling terminal)
Converter Power Distribution Side
230 V/400 V AC TT power supply system
• Maximum continuous operating voltage Uc: L-N: 385 V AC; N-PE: 260 V AC
• Nominal discharge current (8/20 μs) In: 20 kA
• Maximum discharge current (8/20 μs) Imax: 40 kA
• Voltage protection level Up: L-N: 1.8 kV; N-PE: 1.5 kV
• External dimensions: 90 mm×72 mm×67 mm (not including remote signaling terminal)
Converter Signal Protection
• Maximum continuous operating voltage: 33 V
• Rated current: 1 A
• Cut-off frequency: 7.8 MHz
• Pair of protection line: 2 pairs
• Exterior Dimensions: 93 mm×69 mm×12 mm
• Type of interface: wiring terminal
• Nominal discharge current (8/20 μs): 10 kA
• Total discharge current (8/20 μs): 20 kA
• Impulse discharge current(10/350 μs): 1 kA
MAIN CONTROL SYSTEM
Normally 230 V/400 V AC three phase power inlet wire is used. Some may use 400 V/690 V AC instead.
SPD protects the power inlet wire, low-voltage wire and signal wire (digital value, analog value, temperature monitoring and bus, etc.)
Power Supply Protection
Signal Protection
Main Control System
Power Supply Protection
400 V/690 V AC 3 phase power supply system
• Maximum continuous operating voltage Uc: 750 V AC
• Nominal discharge current (8/20 μs) In: 15 kA
ZGG40-385(1+1)hs
• External dimensions: 90 mm×54 mm×68 mm (not including remote signalling terminal)
• Maximum discharge current (8/20 μs) Imax: 30 kA
• Voltage protection level Up: L-N: 1.8 kV; N-PE: 3.0 kV
ZGG40-385(3+1)hs
230 V/400 V AC 3 phase power supply system
• Maximum continuous operating voltage Uc: L-N: 385 V AC; N-PE: 260 V AC
• Nominal discharge current (8/20 μs) In: 20 kA
• Maximum discharge current (8/20 μs) Imax: 40 kA
• Voltage protection level Up: L-N: 1.8 kV; N-PE: 1.5 kV
• External dimensions: 90 mm×72 mm×67 mm (not including remote signalling terminal)
230 V AC single phase power supply system
• Maximum continuous operating voltage Uc: L-N: 385 V AC; N-PE: 260 V AC
• Nominal discharge current (8/20 μs) In: 20 kA
• Maximum discharge current (8/20μs)Imax: 40kA
• Voltageprotection level Up: L-N: 1.8 kV; N-PE: 1.5 kV
• External dimensions: 90 mm×36 mm×67 mm(not including remote signalling terminal)
24 V DC power supply system
• Maximum continuous operating voltage Uc: 30V AC; 45V DC
• Nominal discharge current (8/20μs) In: 5 kA
• Maximum discharge current(8/20 μs)Imax: 10 kA
• Open-circuit voltage (1.2/50 μs) Uoc: 10 kV
• Voltage protection level Up: + — -: 280 V; - — PE: 800 V
• External dimensions: 90 mm×14 mm×76.5 mm (not including PEterminal)
Main Control System Signal Protection
ZGXM-MZ2J-5c
CE
ZGXM-MZ2J-24c
CE
ZGXM-MZ2J-30c2
• Maximum continuous operating voltage: 6 V
• Rated current: 1 A
• Cut-off frequency: 7.8 MHz
• Pair of protection line: 2 pairs
• External dimensions: 93 mm x 69 mm x 12 mm
• Type of interface: wiring terminal
• Impulse withstand capability(1.2/50 μs,8/20 μs): 20 kV,10 kA
. Total discharge current (8/20 μs): 20 kA
• Impulse discharge current (10/350μs): 1 kA
• Maximum continuous operating voltage: 33 V
• Rated current: 1 A
• Cut-off frequency: 7.8 MHz
• Pair of protection line: 2 pairs
• External dimensions: 93 mm x 69 mm x 12 mm
• Type of interface: wiring terminal
• Nominal discharge current(8/20μs): 10 kA
• Total discharge current (8/20 μs): 20 kA
• Impulse discharge current(10/350 μs): 1 kA
• Maximum continuous operating voltage: 33 V
• Rated current: 1 A
• Cut-off frequency: 30 MHz
• Pair of protection line: 2 pairs
• External dimensions: 93 mm x 69 mm x 12 mm
• Type of interface: wiring terminal
• Nominal discharge current (8/20 μs): 10 kA
• Totaldischarge current (8/20μs): 20 kA
• Total impulse discharge current (10/350 μs): 5 kA
• Maximum continuous operating voltage: 6 V
• Rated current: 500 mA
• Transmission rate: 1000 Mbit/s
ZGXT-4R-5Kb
• Pair of protection line: 4 pairs
• External dimensions: 110mm x 55 mm x 25 mm
• Type of interface: RJ45
• Impulse withstand capability (1.2/50 μs, 8/20μs): 3 kV, 1.5 kA (L-L); 5 kV, 2.5 kA (l-PE)
Power Supply Protection
230 V/400 V AC 3 phase power supply system
• Maximum continuous operating voltage Uc: L-N: 385 V AC; N-PE: 260V AC
• Nominal discharge current (8/20μs) In: 20 kA
• Maximum discharge current(8/20 μs)Imax: 40 kA
• Voltage protection level Up: L-N: 1.8 kV;N-PE: 1.5 kV
• External dimensions: 90mm×72 mm×67 mm (not including remote signalling terminal)
Signal Protection
Maximum continuous operating voltage: 6 V
Rated current: 1 A
Cut-off frequency: 7.8 MHz
Pair of protection line: 2 pairs
External dimensions: 93 mm x 69 mm x 12 mm
Type of interface: wiring terminal
Impulse withstand capability (1.2/50 μs, 8/20 μs): 20 kV, 10 kA
Total discharge current (8/20 μs): 20 kA
Impulse discharge current (10/350 μs): 1 kA
Maximum continuous operating voltage: 33 V
Rated current: 1 A
Cut-off frequency:7.8MHz
Pair of protection line: 2 pairs
Exterior Dimensions: 93mm x 69 mm x 12 mm
Type of interface: wiring terminal
Nominal discharge current (8/20μs): 10 kA
Total discharge current (8/20 μs): 20 kA
Impulse discharge current (10/350 μs): 1 kA
GENERATOR
Rotor to the generator-side of the converter. Type Il SPD is used.
Almost same configuration with converter.
Stator-side/Rotor-side Power Supply Protection
690 V power supply system
• Maximum continuous operating voltage Uc: 850 V AC
• Nominal dischargecurrent (8/20μs) In: 20 kA
• Maximum discharge current (8/20μs)Imax: 40 kA
ZGG40-850(3+1)f
• Voltage protection level Up: 4.0 kV
• External dimensions: 90mm×72 mm×68 mm (not including remote signallingterminal)
CE
950 V/1140 V power supply system
• Maximum continuous operating voltage Uc: 1260 V AC
• Nominal discharge current (8/20μs) In: 15 kA
• Maximum discharge current(8/20μs)Imax: 30 kA
ZGG30-1260(3+1)Zf
• Voltage protection level Up: 5.0 kV
• External dimensions: 90 mm×144 mm×65.5 mm (not including remote signalling terminal)
1380 V power supply system
• Maximum continuous operating voltage Uc: 1500 V AC
• Nominal discharge current (8/20μs) In:20 kA
• Maximum discharge current (8/20μs)Imax: 40 kA
• Voltage protection level Up: 6.5 kV
ZGGH40-1500(3+0)f
• External dimensions: 150 mm×108 mm×67mm(not including remote signalling terminal)
Power Supply Protection
400 V AC TT power supply system
· Maximum continuous operating voltage Uc: 440 V AC
• Nominal discharge current (8/20 μs) In: 50 kA
• Impulse discharge current (10/350 μs) limp: 50 kA
• Voltage protection level Up: 2.5 kV
• External dimensions: 90 mm×36 mm×67 mm (not including remote signalling terminal)
Signal Protection
• Maximum continuous operating voltage: 33 V
• Rated current: 1 A
• Cut-off frequency: 7.8 MHz
• Pair of protection line: 2 pairs
• Exterior Dimensions: 93 mm x 69 mm x 12 mm
· Typeof interface: wiring terminal
· Nominal discharge current (8/20 μs): 10 kA
Total discharge current (8/20 μs): 20 kA
· Impulse discharge current (10/350 µs): 1 kA
· Maximum continuous operating voltage: 6 V
• Rated current: 500 mA
· Transmission rate: 100 M bit/s
• Pair of protection line: 2 pairs
• External dimensions: 100 mm x 35 mm x 25 mm
· Type of interface: RJ45
· Impulse withstand capability (8/20 µs): 3 kA (L-SE), 5 kA (SE-PE)
BOX-TYPE TRANSFORMER SUBSTATION
Normally the primary side voltage is 35 kV, the secondary side voltage is 400 V/690 V AC.
SPD is required.
Power Supply ProtectionPower Supply Protection Level B
690 V AC TT power supply system
• Maximum continuous operating voltage Uc: 760 V AC
• Nominal discharge current (8/20μs) In: 25 kA
• Impulse discharge current (10/350μs)limp: 25 kA
• Voltage protection level Up: 5.0 kV
• External dimensions: 90 mm×36 mm×67 mm (not including remote signalling terminal)
400 V/690 V AC TN power supply system
• Maximum continuous operating voltage Uc: 760 V AC
• Impulse discharge current(10/350μs)limp: 12.5 kA
• Voltage protection level Up: 3.5 kV
• External dimensions: 150 mm×108 mm×67mm (not including remote signalling terminal)
LIGHTNINGPROTECTION
WIND POWER SYSTEM
| Item | Technical Parameters | Remark | |
| Monitored location | Solutions for different productsBlade, tower, hub and nacelleare provided upon request | ||
| Monitored item | Lightning occurrence time, peak value, polarity, times, quantityof electric charge, specific energy, and rate of current change | Products are determined basedon needs | |
| Scope of monitored lightningcurrent peak | Pulse current: maximum: 250 kA, minimum: 1 kA-5 kA,continuous current: 25 A-2.5 kA | Depends on the specificproduct | |
| Sensor frequency response | 0.1 Hz -1 MHz | ||
| Measurement error | ≤±5%±1 kA | ||
| Storage mode | Depends on the specificSD card, FLASHproductRS485/CAN/Ethernet/Wi-Fi/Power carrier/433 MHz wirelesscommunication/4G communicationProfibus DP/CANOPEN/ Modbus TCPIP 65 Independent cabinet≤12 W | ||
| Communication interface | |||
| Communication | protocol | ||
| Waterproof rating | |||
| Overall power consumption | |||
• The lightning current sensors allow the system to detect lightning current signals generated on the blades upon lightning stroke and send the signals to the lightning monitoring instrument.
. The lightning monitoring system collects, calculates, and records lightning occurrence time, peak value of lightning current, polarity, quantity of electric charge, specific energy, and steep wave coefficient. The recorded data is stored to internal storage.
: The lightning monitoring system provides anRS485/CAN/Ethernet interface that complies with Profibus DP/Modbus RTU/Modbus TCP protocols.
: Monitored data is transmitted to the controlling system in the nacelle through this interface. The data is then uploaded to the controlling box of the tower footing and at last to the monitoring center.
: The centralized monitoring system on the wind farm provides data display, management, statistics, and reporting.
LIGHTNING WARNING SYSTEM
The product, based on the principle of charge induction, adopts the cutting-edge technology MEMS (micro electro mechanical system).
It boasts compact size, low consumption with mechanical parts that are hard to wear, more stable and reliable than traditional methods.
The product measures the ground atmospheric electric field and its changes. It can be used in many fields such as lightning warning, intelligent grid, meteorology and scientific research.
LIGHTNINGPROTECTION
WIND POWER SYSTEM
System composition
The new type of lightning warning system is mainly made up of sensors, signal transmission boxes and warning software.
Main parameters of the monitoring system
| Item Parameter | |
| Measuring scope of electric field | -50 kV/m~+50 kV/m |
| Warning time | within 30 min |
| Warning radius | ≤20 km |
| Resolution ratio | ≤20 V/m |
| Response time | 1s |
| Sensor power consumption | ≤0.9 W |
| Storage capacity | ≥1024 GB |
| Storage time | ≥10 years |
| Weight of sensor | ≤1.2 kg |
| Interface method | RS232, GPRS, RJ45, NB-LoT, Optical fiber, etc. |
| IP code | IP 65 |
| Warning method | Three-level of sound-light alarm in yellow, orange and red |
CONTACT US
No.19 Tianyu Rd. Western Park, Hi-tech Zone, Chengdu, Sichuan, P.R. China
+86 400-682-1987
+86-28 86082899
info@zhongguang.com support@zhongguang.com
