Technical data

1MRS751108-MUM
REX 521
11
Protection Relay
Technical Reference Manual, General
2. Safety information
Dangerous voltages can occur on the connectors, even though
the auxiliary voltage has been disconnected.
Non-observance can result in death, personal injury or
substantial property damage.
Only a competent electrician is allowed to carry out the electrical
installation.
National and local electrical safety regulations must always be
followed.
The frame of the device has to be carefully earthed.
The device contains components which are sensitive to
electrostatic discharge. Unnecessary touching of electronic
components must therefore be avoided.
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.