Eaton Power Xpert XGIS, Инструкция пользователя

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71
Instruction Booklet IB022018EN
Effective July 2020
Instructions for the installation and
commissioning of Power Xpert
TM
XGIS gas insulated switchgear
EATON
www.eaton.com
Section 6: Commissioning
This section is intended to be an informal reference only and
covers recommended XGIS switchgear commissioning practices.
It is ultimately the responsibility of the commissioning contractor
to determine the level of activities required to satisfy the project
requirements on an application by application basis.
Commissioning the XGIS system will include visual inspections, wire
checks, power-off sequencing checks using external control power,
electrical and manual operation checks for the 3PDS and circuit
breaker, and local and external control checks as per the project
diagrams.
Tests will include (see
section 7 ):
•
Insulation resistance (at 10KV)
•
Field power frequency withstand test (at 60 kV)
•
Contact resistance (at 100 amps)
•
SF
6
gas leak check (sniffer or pressure check)
•
SF
6
sample (moisture and purity)
•
Ground continuity check to ensure switch is properly grounded
(use 100 amp ductor)
•
Test voltage transformers (megger and ratio)
•
Test current transformers (ratio and polarity)
6.1 Pre-commissioning final inspection
Final Inspection prior to commissioning
•
Check that gas pressure in the sealed tanks is within the specified
range.
•
Clean the cabinet surface and the control chamber; check coating
of the cabinet for damage; if there is any, use the right paint to
touch up.
•
Replace parts removed during installation.
•
Take out all tools and other devices that do not belong to the
switchgear.
•
Verify that the switchgear is in normal state.
•
Verify that surrounding environment is in normal state.
6.2 Commissioning procedures
6.2.1 Preparations for commissioning
Prepare for commissioning by performing the following tasks before
connecting high-voltage power:
•
Connect auxiliary and control power and check the polarities as
appropriate.
•
Check the effectiveness of 3PDS and circuit breaker (if furnished)
mechanical and electrical interlocks according to the information
in Section 4.2.1 (for the 3PDS) and 4.2.2 (for the CB) of the
Operation and Maintenance Manual, IB022017EN.
•
Perform function tests for connected protective devices according
to relevant standards.
•
Check the overall condition of the system.
•
Locate the SF
6
gas handling instructions in a prominent place in
the Switchgear Room.
•
Locate emergency procedures for SF
6
gas leaks in a prominent
place in the Switchgear Room.
•
Train the site operations personnel in the operation of the XGIS
equipment.
•
Confirm that upstream and downstream electrical equipment has
been prepared for the commissioning of the XGIS switchgear.
•
Check the switchgear power and control connections, power
supplies, external control, grounding and environment:
•
Power bus
•
Control wiring
•
Auxiliary power and its polarity (as appropriate)
•
Remote control system connections and operation
•
External grounding of the switchgear grounding terminals
•
Equipment in switchgear
See
Appendix A
for a recommended XGIS Switchgear
Commissioning Checklist.
6.2.2 Startup
•
Comply with all relevant safety regulations.
•
Confirm that the vertical section circuit breaker is in its open
position.
•
Confirm that the vertical section 3PDS is in its closed position.
•
Clear the switchgear area of miscellaneous debris, work tools and
extraneous equipment.
•
Check phase sequence for all relevant power connections.
•
Start the switchgear as per normal procedures; observe signals
displayed on the 3PDS position indicator, the circuit breaker status
indicator (and protective devices if furnished).
•
Use the connected high voltage power supply to check the
measurements and other features.
•
Pay attention to unusual situations. Comply with all relevant safety
regulations.
Contact your Eaton Engineering Systems and Services professional
to provide testing services.