40kA Surge protections SPD

40kA Surge protections SPD

LYD3 series surge protective device is suitable used in the IT, TT, TN-C, TN-S, TN-C-S and power supply system of AC 50/60Hz, rated voltage up to 380V, to protect from direct and indirect lightning impulse and other transient over voltage. As per the conditions of IEC61643-1:1998-02 ST standard, Class 2 surge protective device, it is category B surge protective device. SPD is incompliance with IEC 61643-1 standards.

Operation Elements

1. Single pole structure, single pole or three poles combined SPD available.
2. SPD has built-in disconnector, when SPD is invalid due to overheating or breakdown, the disconnector can automatically separated SPD from network, meanwhile send an indication signal.
3. The visible window show white color in normal service, if to be separated from network, it will show red color, it can adopt Kelvin wiring mode.
4. Large current carry capacity, fast response time, low residual voltage.

Installation:

1. Category B surge protective device (SPD) used in the connection between equal potential electrodes while thunder occur.
2. To be mounted between LPZ0A or LPZ0B zone and LPZ1 zone, adopts 35mm standard mounting rail. The cross sectional area of multi-standard soft copper conductor 2.5 to 35mm².
3. Generally to be installed in low voltage main incoming distribution panel, overhead incoming.
4. As required, the user can assemble single pole or three poles surge protective device freely.
5. Generally to be installed in low voltage main incoming distribution panel, earthing wire shall be dual color multi-stand soft copper conductor more than 16 mm².

Technical parameter

Outside size: