GUID-BEDD698E-356C-4CF9-9DAE-64DB3CEADEAD v1
Dangerous voltages can occur on the connectors, even though the auxiliary voltage
has been disconnected.
M2369-2 v3
Always connect the IED to protective earth, regardless of the operating conditions.
This also applies to special occasions such as bench testing, demonstrations and
off-site configuration. This is class 1 equipment that shall be earthed.
M2367-2 v1
Never disconnect the secondary connection of current transformer circuit without
short-circuiting the transformer’s secondary winding. Operating a current transformer
with the secondary winding open will cause a massive potential build-up that may
damage the transformer and may cause injuries to humans.
M2372-2 v1
Never remove any screw from a powered IED or from a IED connected to powered
circuitry. Potentially lethal voltages and currents are present.
SEMOD168311-3 v1
Take adequate measures to protect the eyes. Never look into the laser beam.
GUID-11CCF92B-E9E7-409C-84D0-DFDEA1DCBE85 v2
The IED with accessories should be mounted in a cubicle in a restricted access area
within a power station, substation or industrial or retail environment.
2.3 Caution signs
IP1503-1 v1
GUID-5D1412B8-8F9D-4D39-B6D1-60FB35797FD0 v3
Whenever changes are made in the IED, measures should be taken to avoid
inadvertent tripping.
GUID-F2A7BD77-80FB-48F0-AAE5-BE73DE520CC2 v1
The IED contains components which are sensitive to electrostatic discharge. ESD
precautions shall always be observed prior to touching components.
M2695-2 v2
Always transport PCBs (modules) using certified conductive bags.
M2696-2 v1
Do not connect live wires to the IED. Internal circuitry may be damaged
Section 2 1MRK 505 378-UEN Rev. K
Safety information
24 Line differential protection RED670
Commissioning manual
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