SPD for Power Supply

Surge Protection Device for Wind Turbine

In wind turbine system, there are many vulnerable electronics equipment which will be damaged by lightning strikes or transient over-voltages, such as:

  • The control system, including sensors, actuators, and the motors for steering the equipment into the wind etc.
  • The electronics, including transformer, frequency converter, switchgear elements, and other expensive, sensitive equipment.
  • Generators, battery subsystem etc.

Properly installed surge protective devices (SPDs) will minimize the potential impact of lightning events in wind turbine.

SPD for Generator Lines in Wind Turbine

the data sheets to be updated

SPD for Power Supply in Wind Turbine

  • Pluggable T2 SPD with high energy MOV technology for wind turbine
  • High reliability due to global patented thermally protected with special arc-extinguish device (TPAE technology)
  • High surge current discharge capacity up to 40kA 8/20μs
  • Pluggable module for easy replacement
  • Degradation indication & optional remote signal contact.
  • Prewired for three phase 3W+G network systems such as TN-C etc
  • Comply with IEC/EN 61643-11, UL 1449 4th, IEEE C62.41, CSA C22.2
Model   SP440/3P-S SP760/3P-S SP860/3PT-S
Compliance   EN/IEC 61643-11, UL 1449th
Category EN/IEC/UL   T2/ Class II /Type 1ca
Nominal Voltage Un 400/690Vac
Max. Continuous Operating Voltage (AC) Uc 440V 760V 860V
Technology   High energy MOV technology; TPAE technology (patented) High energy MOV & GDT technology; TPAE technology (patented)
Ports/Protection Mode   1 / L-PEN
Nominal Discharge Current (8/20μs) In 20kA
Max. Discharge Current (8/20μs) Imax 40kA
Voltage Protection Level Up ≤2.4kV ≤3.0kV ≤4.0kV
Voltage Protection Level @ 5kA Ures <2.0kV <2.0kV <2.5kV
Temporary Overvoltage TOV
—Withstand Mode
Utov 582V/5s 900V/5s 1200V/5s
Residual Current IPE <0.1mA <0.1mA No
Follow Current If No
Short Circuit Current Rating per UL 1449 Isccr 200kArms
Response Time tA ≤25ns
Backup Fuse (only required if not already provided in mains)   125A gL/gG
Environment   Temperature Range: -40ºC ~ +80ºC; Humidity: ≤95%; Altitude: ≤3000m
Cross-Section of Connection Wire   Single-strand 35mm2; multi-strand 25mm2
Mounting   35mm DIN-rail in accordance with EN 50022/DIN46277-3
Enclosure Material   thermoplastic; extinguishing degree UL94 V-0
Degree of Protection   IP20
Installation Width   3 modules, DIN 43880 4 modules, DIN 43880
Failure Indication /Status   RED- Failure
Remote Alarm Contact   Yes
Approvals, certification   CE
Diagram   1 1 2
Additional Data for Remote Alarm Contacts
Remote Alarm Contact Type Isolated Form C
Switching Capability Un/In AC: 250V/0.5A; DC: 250V/0.1A; 125V/0.2A; 75V/0.5A
Max. Size of Connecting Wire Max. 1.5mm2 (or # 16AWG)

Surge Protection Solution for Wind Turbine

Power System Installation Location Device to be Protected Prosurge Model
Generator Lines 400/690Vac, 3-phase, 3-wire+ground (or TN-C) Nacelle 1 Stator of Generator SP×××/3P-S
2 Rotor Winding of Generator SP×××/3PT-S
Tower Base 3 Main Power Service SP×××/3P-S
4 Inverter SP×××/3PT-S
Substation 5 Low Voltage Side of the Transformer B××VG××
Power Supply 230/400Vac, 3-phase, 3-wire+ground (or TN-C) Hub 6 Pinch-control Cabinet SP×××/3P-S
Nacelle 7 Aircraft Warning Light SP×××/2P-S
8 Nacelle Control Cabinet SP×××/3P-S
Tower Base 9 Tower-base Control Cabinet SP×××/3P-S

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