Basler BE1-25/79TR, Instruction Manual, Page: 53 / 78

4-1
SECTION 4
INSTALLATION
GENERAL
When not shipped as part of a control or switchgear panel, BE1-25/79TR Sync-Check Reclosing Relays are
shipped in sturdy cartons to prevent damage during transit. Immediately upon receipt, check the model and
style number against the requisition and packing list to see that they agree. Visually inspect it for damage
that may have occurred during shipment. If there is evident damage, immediately file a claim with the carrier
and contact a sales representative at Basler Electric, Highland, Illinois.
In the event the unit is not to be installed immediately, store it in its original shipping carton in a moisture and
dust free environment. It is strongly recommended that a confidence test (described later in this section)
always be performed prior to installation.
OPERATING PRECAUTIONS
Before installation or operation, observe the following precautions.
1. Always be sure that external operating (monitored) conditions are stable before removing a relay for
inspection, testing, or servicing.
2. BE1-25/79TR Sync-Check Reclosing Relays are solid-state devices and have been type tested in
accordance with the requirements defined in the following paragraph, Dielectric Test. If a wiring
insulation test is required on the switchgear or panel assembly of which this unit is a part, observe the
following paragraph, Dielectric Test.
3. Be sure that the relay chassis is hard wired to earth ground using the chassis ground terminal on the
rear of the relay.
4. When the relay is in service, the controls should be protected by the cover supplied. This limits access
to the control settings.
DIELECTRIC TEST
Relays have been type tested in accordance with the requirements of IEC 255-5 and ANSI/IEEE C37.90.1-
1989. One-minute dielectric (high potential) tests of the assembled switchgear or control panel wiring may
be preformed at voltage levels up to 1500 Vac (45-65 Hz). Note the following:
1. Decoupling capacitors (0.001 F) are employed on the voltage input terminals to chassis ground.
Accordingly, a leakage current of approximately 5.6 mA per terminal point is to be expected when
high potting at 1500 Vac, 60 Hz.
2. Varistors are connected across the following terminals:
Power supply
Contact sensing inputs
Relay output contacts.
Only communication terminals, and the line and bus input terminals do NOT have varistors installed.