The insulation resistance value at the surge arrester terminal block between the I/O terminals and ground is 100 MΩ or more/500 VDC. The withstand voltage between I/O terminals and ground is 1000 VAC/1 minute (or 1500/1 minute for the AR-PH only).
The insulation resistance value at the surge arrester terminal block between the I/O terminals and ground is 100 MΩ or more/500 VDC. The withstand voltage between I/O terminals and ground is 1000 VAC/1 minute (or 1500/1 minute for the AR-PH only).