Date Code 20170814 Instruction Manual SEL-700G Relay
Section 2
Installation
Inst ruction Manual
Overview
The first steps in applying the SEL-700G Relay are installing and connecting
the relay. This section describes common installation features and
requirements.
To install and connect the relay safely and effectively, you must be familiar
with relay configuration features and options. You should carefully plan relay
placement, cable connections, and relay communication.
This section contains drawings of typical ac and dc connections to the
SEL-700G. Use these drawings as a starting point for planning your particular
relay application.
The instructions for using the versatile front-panel custom label option are
available on the SEL-700G product page on the SEL website. This allows you
to use SEL
OGIC control equations and slide-in configurable front-panel labels
to change the function and identification of target LEDs.
Relay Placement
Proper placement of the SEL-700G helps to ensure years of trouble-free
protection. Use the following guidelines for proper physical installation of the
SEL-700G.
Physical Location
You can mount the SEL-700G in a sheltered indoor environment (a building or
an enclosed cabinet) that does not exceed the temperature and humidity
ratings for the relay. The relay is IEC EN61010-1 rated at Installation/
Overvoltage Category II and Pollution Degree 2. This rating allows mounting
of the relay indoors or in an outdoor (extended) enclosure where the relay is
protected against exposure to direct sunlight, precipitation, and full wind
pressure, but neither temperature nor humidity are controlled.
You can place the relay in extreme temperature and humidity locations. (See
Operating Temperature and Operating Environment on page 1.14.) For
EN 61010 certification, the SEL-700G rating is 2000 m (6560 feet) above
mean sea level.
In North America, the relay is approved for Hazardous Locations Class I,
Division 2, Groups A, B, C, and D, and temperature class T4A in the
maximum surrounding air temperature of 50°C.
Relay Mounting
To flush mount the SEL-700G in a panel, cut a rectangular hole with the
dimensions shown in Figure 2.1. Use the supplied front-panel gasket for
protection against dust and water ingress into the panel (IP65). For extremely
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