Wind Power System Surge Protection
Wind turbines are installed in exposed environments such as mountains, coastlines, grasslands and offshore areas. Because of their height and location, wind turbines are naturally more exposed to lightning activity. Lightning surges may enter through power lines, control cables, communication systems and grounding paths. A reliable wind power surge protection system should protect the turbine nacelle, tower base electrical cabinet, converter system, transformer area, monitoring system and communication network.
Tower base control cabinet / Auxiliary power supply
Protects 220/380V control and auxiliary power supplies.
Wind Power SPD->Type 2 / Class ll
Uc(V):
AC760V/1500V
Un(V):
AC690V/1140V
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Mode of Protection:
L/N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingSCADA / Sensor communication cables
Protects network, status, analog, and remote control signal lines.
Signal & Data SPD
Uc(V) :
15V/30V/60V
Un(V) :
12V/24V/48V
In (8/20 μs):
5kA
Imax(8/20 μs):
10kA
Reference Standards:
IEC 61643-21OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote Signaling
Signal & Data SPD
Uc(V) :
8V
Un(V) :
5V
In (8/20 μs):
10kA
Imax(8/20 μs):
20kA
Reference Standards:
IEC 61643-21OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingPad-mounted transformer low-voltage side / Wind turbine grid-connection side
Provides primary protection on the low-voltage side of the box-type substation, given the exposed environment of the wind farm.
Wind Power SPD->Type 1 / Class l
Uc(V):
AC760V/1500V
Un(V):
AC690V/1140V
In (8/20 μs):
25kA
Imax(8/20 μs):
50kA
Mode of Protection:
L/N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingWind measurement / Monitoring mast equipment enclosure
Protects outdoor monitoring, meteorological, and communication lines.
Signal & Data SPD
Uc(V) :
8V
Un(V) :
5V
In (8/20 μs):
10kA
Imax(8/20 μs):
20kA
Reference Standards:
IEC 61643-21OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote Signaling
Wind Power SPD->Type 2 / Class ll
Uc(V):
AC760V/1500V
Un(V):
AC690V/1140V
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Mode of Protection:
L/N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote Signaling
CCTV & Security SPD
Uc(V) :
DC40V/AC320V
Un(V) :
DC24V/AC220V
In (8/20 μs):
10kA
Imax(8/20 μs):
20kA
Reference Standards:
IEC61643OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingSolutions
Different systems require different SPD types, voltage levels, wiring structures and installation positions. Select your application scenario to view the recommended protection strategy.FAQ
What information is needed for wind power SPD selection?
You need to provide turbine system voltage, cabinet layout, signal type, grounding system, installation position, and project protection requirements.
Can CRESIN provide SPD for wind farm communication systems?
Yes. CRESIN can provide surge protection for RS485, Ethernet, telecom, monitoring, and control signal lines used in wind power systems.
Do wind turbines require both power SPD and signal SPD?
Yes. Wind turbines usually require power SPD for electrical distribution and signal SPD for communication, sensor, and control lines.
What equipment in wind power systems is sensitive to surges?
Sensitive equipment includes sensors, communication modules, inverter, control cabinets, monitoring systems, pitch control systems, and grid-connected electrical equipment.
Where should SPD be installed in a wind turbine system?
SPD can be installed in the nacelle control cabinet, tower base cabinet, converter cabinet, generator system, communication lines, sensor lines, and power distribution system.
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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