Basler BE1-27, Instruction Manual

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INSTALLATION 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 evident damage, immediately file a claim with the carrier and
contact the Basler Electric Regional Sales Office, your Sales Representative, or 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 the relay is to be placed in service, it is recommended that the
operational test 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 Adc in the output circuit is required to ensure operation of current operated
targets.
2. 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.
3. 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. Also, be sure that connecting plugs
are in place before replacing the front cover.
4. Be sure the relay case is hard wired to earth ground using the ground terminal on the rear of the
unit. Use a separate ground lead to the ground bus for each relay.
5. An undervoltage target indication may occur when the lower connecting paddle is removed if:
a) the instantaneous time function is selected, or
b) a time delay (definite or inverse) below 0.3 seconds is selected.
No actual trip output occurs if the upper paddle is removed first.
DIELECTRIC TEST
In accordance with IEC 255-5 and IEEE C37.90-1978, one-minute dielectric (high potential) tests may be
performed up to 2000 Vac (45-65 Hz). Note that this device employs decoupling capacitors to ground from
terminals 3 and 4. Accordingly, a leakage current is to be expected at these terminals.
MOUNTING
Outline dimensions and drilling diagrams are supplied in Figures 4-1 through 4-12.