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LT-40/F690
Application scope
          The LT-F series surge protector is dedicated to the fan side of the wind power generation system. When the system is overvoltage due to lightning or other reasons, the surge protector will rapidly lead in the nanosecond time, and the overvoltage will be introduced into the earth to discharge, so as to protect the fan equipment.
Product features

1. no need to consider the load current, modular installation, easy to maintain the built-in temperature control and overcurrent circuit breaker technology, high safety performance, no continuous flow;

2.  the indicator window green is normal, red indicates failure, prompt replacement, clear and changeable;

3. The remote signal detection interface (dry contact point) is used to realize the remote monitoring work state.

4. The and three groups of high performance chips are more efficient and safer using the variable working conditions of the fan.

Matters needing attention

According to IEC62305 series standards and IEC61400-24's protection requirements for various special parts of fans, it is necessary to consider the installation and selection of lightning protection sub area SPD for wind power generation system.

1. lightning protection area (LPZ 0... 3);

2. SPD conforms to the test current waveform (8/20us waveform and 10/350us waveform, etc.);

3. the level of voltage protection (Up value of SPD);

4. Voltage and mode of power supply system (230/400V and 400/690V system, TN and TT etc.);

5. harmonic interference and so on.

According to the standard

1. IEC62305 "lightning protection" series of standards;

2. IEC61312 "protection of lightning electromagnetic pulse";

3. IEC61400-24 "lightning protection of wind power generation system";

4. IEC61643-11 "surge protector to low voltage distribution system";

5. GB50057 "code for the design of lightning protection for buildings".

technical data
Electrical parameters technical data
Rated operating voltage Un 690VAC
Maximum continuous operating voltage of the system Uc 1000VAC
Nominal discharge current 20kA
Maximum discharge current 40kA
Maximum impact current -
General parameters
Outer size(Width * height * depth)(mm) 64X90X65
work environment -40~+70℃,relative humidity<(25℃以下)
Installation method 35mm Standard track
Window indication Green: normal; red: failure
Protection level Up 2.5kV
telecommunication equipment 11.14 Normally open;11.12 Normally closed
Wiring diagram

Telegraph wiring diagram

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