4-1
SECTION 4
INSTALLATION
GENERAL
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to
prevent damage during transit. Immediately upon receipt of a relay, check the model and style number
against the requisition and packing list to see that they agree. Visually inspect the relay for damage that
may have occurred during shipment. If there is evidence of damage, immediately file a claim with the
carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric,
Highland, Illinois.
In the event the relay is not to be installed immediately, store the relay in its original shipping carton in a
moisture and dust-free environment. When relay is to be placed in service, it is recommended that the
operational test procedure (Section 5) be performed prior to installation.
RELAY OPERATING PRECAUTIONS
Before installation or operation of the relay, note the following precautions:
1. A minimum of 0.2 A in the output circuit is required to ensure operation of current operated
targets.
2. Do not touch target indicator vanes. Always reset targets by use of the target reset lever.
3. The relay is a solid-state device. If a wiring insulation test is required, remove the connecting
plugs and withdraw the cradle from its case.
4. When the connecting plugs are removed, the relay is disconnected from the operating circuit and
will not provide system protection. Always be sure that external operating (monitored) conditions
are stable before removing a relay for inspection, test, or service.
5. Be sure the relay case is hard wired to earth ground using the ground terminal on the rear of the
unit. It is recommended to use a separate ground lead to the ground bus for each relay.
DIELECTRIC TEST
In accordance with IEC 255-5 and ANSI/IEEE C37.90-1978, one-minute dielectric (high potential) tests
up to 1500 Vac (45-65 hertz) may be performed. This device employs decoupling capacitors to ground
from terminals 3 and 4. Accordingly, a leakage current is to be expected at these terminals.
RELAY MOUNTING
Because the relay is of solid state design, it does not have to be mounted vertically. Any convenient
mounting angle may be chosen. Figures 4-1 through 4-12 provide relay outline dimensions and panel
drilling diagrams.
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