ABB RELION REB500 Operation Manual page 14

Section 2
Safety information
8
The frame of the IEDs has to be carefully earthed.
Whenever changes are made in the IEDs, measures should be taken to avoid
inadvertent tripping.
The IEDs contain components which are sensitive to electrostatic discharge.
Unnecessary touching of electronic components must therefore be avoided.
Take care never to open the secondary circuits of CTs conducting current.
There is a danger of contact with live parts when opening REB500 cubicle
doors.
Electrostatic discharge can destroy components in the equipment.
Other safety instructions pertaining to particular operations are contained in
the respective chapters of the operating instructions.
© Copyright 2019 ABB. All rights reserved
1MRK 500 132-UEN B
Distributed busbar protection REB500
Operation manual