ABB Relion 670 series Operation Manual page 19

1MRK 500 127-UEN D
670 series
Operation manual
Always transport PCBs (modules) using certified conductive bags.
Do not connect live wires to the IED. Internal circuitry may be damaged
Always use a conductive wrist strap connected to protective earth when
replacing modules. Electrostatic discharge (ESD) may damage the module and
IED circuitry.
Take care to avoid electrical shock during installation and commissioning.
Changing the active setting group will inevitably change the IEDs operation. Be
careful and check regulations before making the change.
Avoid touching the enclosure of the coupling capacitor REX061 unit and the
shunt resistor REX062 unit. The surface may be hot during normal operation.
The temperature can rise 50°C in REX061 and 65°C in REX062 above the
ambient temperature.
Section 2
Safety information
M2695-2 v2
M2696-2 v1
M2697-2 v2
M2698-2 v2
M2693-2 v1
GUID-3BEE51C6-8793-4C89-B8A8-07D0FA6EE4CA v3
13