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Instruction Booklet IB020003EN
Effective January 2021
Section 8:
Commissioning procedure
8.1
Preliminary setup
See Appendix C for links to important reference documents and
files.
Before attempting to put a newly installed RVSS into service,
study the wiring diagrams, control schematics, other order-specific
drawings, and all instruction literature. Ensure that all adjustable
devices, including protective relays, have been properly set.
It is recommended that Eaton Electrical Services and Systems
(EESS) engineering services be used to commission the RVSS
Soft-Starter. Contact them using the provided information shown
on page 11, referencing the project GO number to coordinate
scheduling.
See Appendix B for the Commissioning Form and QuickStart
Guidelines.
Verify that the controller and motor are connected per the Eaton
drawings. This is particularly essential in this class of equipment, as
the fuse ratings, current transformers, and overload protection are
based on the characteristics of the particular motor (or other load) to
be controlled.
Ensure that all safety precautions have been taken and that the
installation conforms to applicable regulations and safety practices.
The equipment should be free of dirt, scraps of wire, tools, and
other foreign material.
Contactor vacuum interrupter tests
The dielectric strength of the vacuum interrupters should be
checked before the RVSS is energized for the first time and regularly
thereafter to detect at the earliest possible date any deterioration in
the dielectric strength of the interrupter, because this may result in
an interruption failure.
The test is best performed with the RVSS main cell contactor or
Bypass contactor removed from the cubicle, or with the RVSS cell
SCR truck removed from its cell. Removal instructions can be found
in the Installation and Maintenance manual IB020004EN. If testing
is performed with the contactor installed, care must be taken to
ensure that no damage is inflicted on the starter control power
transformer (CPT), potential transformers (PT), or to the starter load.
Removal of the starter cell primary fuses is sufficient to protect the
CPT or PTs. Cables to the load should be disconnected. Although
an AC test is recommended, a DC test may be performed if only a
DC test unit is available. A good vacuum interrupter will withstand
a 16 kV–60 Hz test or a 23 kV–DC test across the normally open
contact gap. When performing DC tests, the voltage should be
raised in discrete steps until the final test voltage is reached. When
tested with an AC high-potential tester, expect a capacitance leakage
current of approximately 1 milliampere per interrupter. Refer to
IB-48018N for more information on dielectric testing of the contactor
vacuum interrupters.
8.2
System characteristics documentation
RVSS will require motor and soft start configuration information to
operate properly. This document includes two data sheet to be filled
out with motor and soft starter information prior to configuring the
RVSS.
Motor information will be obtained from the motor nameplate or the
motor data sheet. Prior to configuring the RVSS, it is recommended
that the RVSS Motor Information sheet be completely filled out.
RVSS configuration information will depend upon the intended
operating mode, the power supply system, the machine designer's
intended system performance, and the presence or absence of a
separate Motor Protective Relay (MPR). Prior to configuring the
RVSS, it is recommended that the Commissioning Report be
completely filled out.
8.3
Programming
The RVSS must be configured for the chosen soft starter functions.
This can be done using either the Monitoring User Interface (MUI)
44
EATON www.eaton.com
or a PC equipped with the Eaton Power Xpert in Control application
section 9 for details on programming
programming interface. See
the BCM.
8.4
Hi-pot and megger tests
BEFORE PERFORMING A HI-POT OR INSULATION RESISTANCE MEGGER
TEST, REFER TO AMPGARD RVSS INSTALLATION AND MAINTENANCE
MANUAL IB020004EN FOR PRECAUTIONS AND INSTRUCTIONS.
USE APPROPRIATE PERSONAL PROTECTIVE EQUIPMENT (PPE) AND
OBSERVE SAFE ELECTRICAL WORK PRACTICES WHEN PERFORMING
HI-POT ELECTRICAL TESTS.
ONLY QUALIFIED, TRAINED AND CERTIFIED ELECTRICAL PERSONNEL
SHOULD PERFORM THIS TESTING.
DURING TESTING, MAINTAIN A MINIMUM SAFE DISTANCE OF SIX FEET
FROM THE RVSS EQUIPMENT BEING TESTED.
AFTER COMPLETING HI-POT TESTING, BRIEFLY GROUND THE POWER
CONDUCTORS TO REMOVE ANY RESIDUAL ELECTRICAL CHARGE.
TO PREVENT DAMAGE TO THE RVSS, REMOVE THE RVSS TRUCK PRIOR TO
DIELECTRIC TESTING.
8.5
Removing the RVSS SCR truck
The RVSS truck may be removed by following the instructions
outlined in the Installation and Maintenance Manual, IB020004EN.
Truck removal provides easy access to the cable area in the RVSS
cell for bottom entry starters and is required if dielectric testing is to
be performed. To remove the RVSS truck utilizing the provided ramp,
a minimum clearance of 60 inches is required in front of the starter.
ENSURE THAT THE STARTER IS OFF. ALLOW AT LEAST 15 MINUTES AFTER
DE-ENERGIZATION BEFORE WORKING ON THE RVSS TRUCK TO ALLOW
TIME FOR THE RC SNUBBER CAPACITORS TO DISCHARGE.
1.
Open the medium voltage doors on the starter cell and the
RVSS cell.
2.
On the RVSS SCR truck, locate the fiber optic cable harness
connections to each phase Power Pole.
3.
Disconnect the three heat sink temperature fiber optic cables
labeled TA, TB and TC from their Power Pole interface boards.
4.
Locate the six SCR firing fiber optic cables on the three phase
Power Poles and confirm that they are labeled A+ and A- for
phase A, B+ and B- for phase B, and C+ and C- for phase C.
5.
Disconnect the fiber optic cables from their Power Poles. Be
sure that they are secured away from the SCR truck.
6.
Disconnect the 48 VDC power cables 48P and 48N at each of
the Power Pole Fan Out Boards (FOB).
7 .
Locate the retaining brackets on the lower front of the truck.
Remove the brackets by taking out two bolts in each bracket.
See Figure 41.
AMPGARD RVSS
Reduced Voltage Soft-Starter
User Manual
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