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REJ 523
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Technical Reference Manual
Safety information
Dangerous voltages can occur on the connectors, even though the auxiliary voltage
is disconnected.
National and local electrical safety regulations must always be followed.
The frame of the protection relay has to be carefully earthed.
Current transformers have to be short-circuited before disconnecting the relay from
them.
Only a competent electrician is allowed to carry out the electrical installation.
ABB Substation Automation
Products and Systems
MRS750940-MUM
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