图1
Din rail SPDs Installation
1. Switch off power supply before installation, the connection cables must be multi-cores leads, 16mm ~ 25mm multi-cores cables recommended. Kelvin connection (chart 1) and T connection (Chart 2) is available, use as short as possible leads for T connection, less than 0.5m long.
2. Select suit circuit breaker or surge suppression fuse in series with SPDs.
3. Green windows mean normal, red windows mean SPDs fail and need to be replaced immediately.
4.When the remote signaling alarms, please check the SPDs and replace if there is faulty on SPDs.
6、 No need special maintenance, check the connection state and indication status regularly.
Chart 1
Chart 2
Chart 1
Chart 2
Connections for different power systems
TN-S system：
TN-C system：
TN-C-S system：
TT system：
IT system：
