HIGH VOLTAGE LABORATORY
Tests Performed
Services
The High Voltage Laboratory offers the following
major test categories:
The services offered by High Voltage Laboratory
include:
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Conformance to standards
•
Standard high voltage testing
•
60 Hz dry & wet voltage withstand test
•
Testing and evaluation of porcelain, glass and
•
60 Hz dry & wet voltage flashover test
composite insulators (including steep front
•
Lightning impulse voltage withstand test (full
and chopped wave)
testing and pollution testing)
•
Lightning impulse voltage flashover test
(standard & steep front)
•
Switching impulse dry & wet voltage withstand
test
•
Switching impulse dry & wet voltage flashover
test
•
DC (direct current) voltage withstand test
•
DC (direct current) voltage flashover test
•
Testing of SF6 insulated equipment
•
Pollution testing (clean fog and salt fog
methods)
•
Testing and evaluation of instrument
•
Radio Influence Voltage (RIV) test
•
Partial discharge test
•
Corona test (electrical and visible image
intensifier detection)
•
Partial discharge testing of equipment
•
Capacitance and tan delta measurement
•
Evaluation and analysis of transformer
•
Insulation AC/DC watts loss test
•
Frequency response analysis (FRA) test
(Laboratory and on site)
•
Testing of bushings
•
Testing of switchgear, disconnecting switches
and circuit breakers
•
Testing and commissioning of power cables
•
Testing of power cable accessories
•
Testing of distribution and power transformers
(partial discharge & impulse tests)
transformers
•
Radio interference voltage (RIV) testing of
equipment
condition and faults
•
Transformer winding movement monitoring
•
Line and bus hardware evaluation
•
Certification tests on aerial devices (bucket
trucks) for live-line work
•
Electromagnetic interference testing and
consultation
•
Field testing: substation equipment
•
Transient measurement for transmission and
distribution systems
High Voltage Laboratory, 12388 88th Ave., Surrey, BC, Canada
•
Transformer rectifier load testing
Powertech Labs Inc.
Contacts: John Vandermaar, john.vandermaar@powertechlabs.com, Tel: (604) 590 7485
May Wang, may.wang@powertechlabs.com, Tel: (604) 590 7495
3. Impulse voltage test equipment
Tests Performed
1. High Voltage Lab
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Impulse generator: 3.2 MV, 225 kJ
Indoor HV lab dimensions: 43m long x 37m
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Impulse generator: 500 kV, 5 kJ
wide x 21m high (140 ft x 120 ft x 90 ft)
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Damped capacitive voltage divider:
Clean fog pollution test chamber: 9m x 9m x
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2.6 MV/2.0 MV (lightning/switching impulse)
20m (30 ft x 30 ft x 65 ft)
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Mixed (R,C,R) voltage divider: 2.0 MV/1.5 MV
Salt fog pollution test chamber: 6m x 6m x 7m
(20 ft x 20 ft x 24 ft)
(lightning/switching impulse)
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Mixed (R,C,R) voltage divider: 300 kV/250 kV
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Outdoor Test Area
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two acres
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Resistive voltage divider: 500 kV
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500 kV Inverted Delta Transmission Line -
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High-resolution digital recording system
180 m (590 ft)
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Digital oscilloscope
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Storage analogue oscilloscopes
(lightning/switching impulse)
2. AC test equipment:
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Resonant test set: 800 kV (two modules in
4. DC voltage test equipment
cascade, 400 kV each) 3.2 A cont.
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DC generator: 1000 kV, 10 mA
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Test transformer: 90 kV, 1.33 A Cont.
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DC generator: 100 kV, 100 mA
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Test transformer: 600 kV, 700 mA cont.
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Resistive voltage divider: 1000 kV
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Test transformer: 100 kV, 60 mA cont.
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Mixed (R,C,R) voltage divider: 450 kV
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5 MVA, 60 Hz motor generator
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Mixed (R,C,R) voltage divider: 200 kV
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1 MVA, 320 Hz motor generator
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Resistive voltage divider: 100 kV
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75 kVA, 400 Hz motor generator
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Capacitive voltage divider: 800 kV
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Damped capacitive voltage divider: 500 kV
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Mixed (R,C,R) voltage divider: 380 kV
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Partial discharge detector
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Radio interference voltage (RIV) meter
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Image intensifier (visible corona detector)
To learn more, please visit our website at
www.powertechlabs.com
Powertech Labs Inc.
Contacts: John Vandermaar, john.vandermaar@powertechlabs.com, Tel: (604) 590 7485
May Wang, may.wang@powertechlabs.com, Tel: (604) 590 7495