Safety Information - ABB REU 523 Technical Reference Manual

1MRS 750942-MUM
2.
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual

Safety information

Dangerous voltages can occur on the connectors, even though the
auxiliary voltage has been disconnected
National and local electrical safety regulations must always be
!
followed
The device contains components which are sensitive to electrostatic
discharge
The frame of the device has to be carefully earthed
Only a competent electrician is allowed to carry out the electrical
installation
Non-observance can result in death, personal injury or substantial
property damage
Breaking the sealing tape on the rear panel of the device will result in
loss of warranty and proper operation will no longer be guaranteed
REU 523
7