Section 4 Mounting; Checking Environmental Conditions And Mounting Space; Detaching And Installing Plug-In Unit; Detaching Plug-In Unit - ABB RELION REX610 Installation Manual

2NGA000821 A
Section 4
4.1
4.2
4.2.1
REX610
Installation Manual
Mounting
Checking environmental conditions and mounting
space
The mechanical and electrical environmental conditions at the installation site must
be within the limits described in the technical manual.
• Avoid installation in dusty, damp places.
Avoid places susceptible to rapid temperature variations, powerful vibrations
and shocks, surge voltages of high amplitude and fast rise time, strong induced
magnetic fields or similar extreme conditions.
• Check that sufficient space is available.
Sufficient space is needed at the front and rear of the protection relay to allow
access to wires and optical fibers to provide sufficient ventilation to the
protection relay and to enable maintenance and future modifications.
• Ensure that flush-mounted protection relays can be added and replaced without
excessive dismantling.
Make sure that the ventilation holes are not blocked at any side of
the installed protection relay case.

Detaching and installing plug-in unit

Detaching plug-in unit

Before detaching the plug-in unit from the case, the auxiliary
voltage must be disconnected.
1. Turn off the power.
2. If a padlock has been used to secure the handle in place, remove the padlock.
3. Rotate the handle 90° to the left from its latched position.
The plug-unit is pushed 5...8 mm (0.1969...0.3150 in) out of the case and the
connectors are separated.
4. Pull the plug-unit out of the case.
Section 4
Mounting
11