M2370-2 v1
Never connect or disconnect a wire and/or a connector to or from a IED during
normal operation. Hazardous voltages and currents are present that may be
lethal. Operation may be disrupted and IED and measuring circuitry may be
damaged.
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 v2
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.
Section 2
1MRK 500 127-UEN D
Safety information
12
670 series
Operation manual
