Table of Contents
Advertisement
18
G R I D S H I E L D
—
7 Operational checks prior
to installation
Before energizing the recloser in the power system,
it is important to conduct mechanical and electrical
tests. Ensure that the necessary control power
connections, including the cable between the
recloser and the low voltage control cabinet,
are made beforehand. If needed, remove the cover
of the recloser compartment to observe its
mechanical operations.
The GridShield
undergo testing as a complete system. ABB ships
the recloser system together on a single pallet,
unless otherwise specified by the customer. During
installation, make sure to match the control cabinet
with the recloser head with which it was shipped,
because calibrations were performed for the
system during factory testing. If matching is not
possible, please refer to section 8.6 of this manual
for the calibration setting procedure.
After installation, it is necessary to perform basic
voltage and metering checks to verify the phase
ordering, phase assignments, phase angles, phase
rotation and CT polarities. Most of these
parameters can be adjusted physically or through
settings in the relay.
Control cabinets are recloser voltage range
specific. Please contact the factory before
mixing high voltage recloser units and control
cabinets.
Do not ground either side of the battery or
attach ground to the terminals of the actuator
operating coils. This will result in permanent
damage to the unit.
®
3 P/ 3 S P R E C L O S E R
recloser and its control cabinet
®
7.1 Electrical close
To operate Beckwith M-7679, follow these steps:
1.
Press the phase selection pushbutton to
choose the correct phases for operation.
2.
Press the CLOSE pushbutton to initiate the
closing action.
3.
The LED next to the CLOSE pushbutton
indicates the status of the recloser.
4. You can adjust the pulse duration for the
closing command using the relay settings.
For RER620 and RER615, follow these guidelines:
1.
Verify the close status by checking the red LED
beside the CLOSE pushbutton.
2.
If the relay is programmed for single-phase
tripping, a menu will appear on the LCD screen,
displaying choices for each phase.
3.
You can control the pulse duration for the
closing command through relay settings.
4. In case of a malfunction, the OPEN and CLOSE
LEDs on RER620 and RER615 will blink
alternately in red and green.
5. If both OPEN and CLOSE LEDs are off, it means
the recloser is in a single-phase mode, where
some phases are open and others are closed.
7.2 Electrical trip
Beckwith M-7679 on standard
ABB control cabinet:
To operate the Beckwith M-7679, you need to press
the phase selection pushbutton to choose the
correct phases. Then, press the OPEN pushbutton.
The LED next to the OPEN pushbutton indicates
the status of the recloser. You can adjust the
duration of the closing command by changing
the relay settings.
Advertisement
Table of Contents
