7UT51 v3
Installation and Servicing
17
PRIM-2330C 179
17 Installation and Servicing
This chapter describes the procedure for installing a
7UT51 relay. The procedure includes:
• Transporting and Storing the Relay
• Unpacking
• Mounting the Relay Case
• Inserting the Back-up Battery
• Attaching the Connections
7UT51 relays are completely tested at the factory prior
to shipment and are designed so that no special
testing, calibration, or maintenance is required.
To install a 7UT51 relay, you must be familiar with all
applicable safety regulations from ANSI, IEC, NEC,
and other pertinent standards.
If you wish to perform acceptance test prior to
installing the relay, see Chapter 16].
17.1 Transport and Storage
Transport the relay in its original packaging material to
protect it from mechanical shock (the factory
packaging meets the IEC 255-21 impact-resistance
guideline).
Store the relay in a dry, clean room with temperature in
the range -13°F to +131°F (-25°C to +55°C) and
relative humidity controlled so that neither
condensation nor frost forms. (Unpacking the relay
and applying DC supply power can help prevent
condensation.)
If the relay is de-energized and stored for an extended
time period, unpack and apply DC supply voltage to
the relay for one or two days prior to placing the relay
into service.
17.2 Unpacking and
Repacking
Figure 17.1 shows an exploded view of the relay
packaging material. Do not use the relay if it appears
to have been damaged during transport.
Figure 17.1
7UT51 Packing Material Diagram
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