10
Section
2:
Instruction
Manual
and
Drawings
*4t*4.73
Instruction Manual
Grounding
To ensure the maximum amount of protection for internal
control components during possible power surge events,
the recloser and control cabinet need to be solidly grounded
together. The recloser ground conductor must be connected
to the supplied #10–2 AWG ground lug located on the
recloser’s frame base. All separate grounds should be
connected to the main ground wire. All connections to the
SEL
®
control (including the control cable, which contains a
ground) must be routed in close proximity to and parallel to
the main ground paths and should be approximately equal
in length. When using a power module with a 351R or 351R
Falcon, the power module box must also be grounded. See
Set-Up on
QBHF
for a visual representation.
WARNING:
Hazardous voltage. Recloser and control must
be solidly grounded. Improper grounding can result in
contact with high voltage, which will cause severe personal
injury or death and equipment damage. Disconnecting the
control cable when the recloser is energized could result in
high voltage on the pins if the recloser tank is not grounded
as specified.
Voltage Sensor Set-Up
All Elastimold
®
MVRs come with pre-calibrated, load-
side capacitive voltage sensors that are capable of
measuring amplitude and phase angle with an accuracy
of approximately 3% under normal operating conditions
(-10˚ C to 45˚ C) and +/-5% at extreme conditions
(-40˚ C to 65˚ C).
For 3-phase MVRs, optional pre-calibrated line-side
resistive voltage sensors are also available and are
capable of measuring the voltage with a higher accuracy
of approximately 1%. All sensors require an 8VAC LEA
voltage sensor input on the SEL
®
651Rx2 control. Refer
to the Elastimold
®
Source Side Voltage Sensor (ESSVS)
Installation Instructions for mounting details. The ESSVS
are not used with the SEL
®
351R, 351R Falcon or 351RS
Kestrel Controls.
Electronic Operation Test
Using the controller, open and close the MVR electrically by
pressing the marked open and close buttons. Confirm that
the selected button is in agreement with the position indicator
on the control panel as well as the recloser position indicator.
The recloser position indicator is located on the bottom of the
recloser as shown below.
MVRs are designed to operate with a total circuit resistance
of 6.5–7.3 ohms across the TRIP/CLOSE pins on the SEL
®
control interface.
SEL is a registered trademark of Schweitzer Engineering Laboratories, Inc.
CAUTION:
Do not energize the recloser for service until all
control settings have been properly programmed and verified.
Refer to the appropriate SEL
®
control manual for programming
procedures. Failure to comply may result in control and recloser
misoperation.
WARNING:
Hazardous voltage. Do not rely on the contact
position indicator to determine that the line has been
de-energized. Always establish a visible disconnect and
establish grounds when performing de-energized line work.
Failure to follow proper safety practices can result in
contact with high voltage, which can cause death or
severe personal injury.
Individual Pole Position
Indicator (Side View)
Open Position
Closed Position
Open Position
Closed Position
Individual Pole Position
Indicator (Bottom View)
