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Test items, cycles and requirements of circuit breakers and

Author:adminDate:2018-06-28

1. SF6 circuit breaker and GIS test items, cycle, requirements and model selection
Order no.
project
Week period
Choose type
1
Circuit breaker and GIS SF6 gas temperature and other gas detection items
Portable thermometer
2
SF6 gas leak test
1. After overhaul
2. If necessary,
SF6 gas leak detector
3
Insulation resistance of auxiliary and control circuits
1.1 ~ 3 years
2. After overhaul
4
Withstand voltage test
1. After overhaul
2. If necessary,
Test transformer
5
Ac withstand test of auxiliary circuit and control circuit
After overhaul
Insulation resistance tester
6
Insulation resistance, capacitance and tg interference of shunt capacitors between fracture surfaces
1.1 ~ 3 years
2. After overhaul
3. If necessary,
Dielectric loss tester
7
Switching resistance value and switching resistance input time
1.1 ~ 3 years (except tank circuit breaker)
2. After overhaul
Circuit resistance tester
8
Speed characteristics of circuit breakers
After overhaul
High voltage switching dynamic characteristic tester
9
Time parameter of circuit breaker
1. After overhaul
2. After the overhaul of the mechanism
High voltage switching dynamic characteristic tester
10
The action voltage of the switching electromagnet
1.1 ~ 3 years
2. After overhaul
3. After the overhaul of the mechanism
Relay protection tester
11
Conductive circuit resistance
1.1 ~ 3 years
2. After overhaul
Circuit resistance tester
12
Shunt and close coil dc resistance
1. After overhaul
2. After the overhaul of the mechanism
Dc resistance tester
13
SF6 gas density monitor (including calibration) test
1.1 ~ 3 years
2. After overhaul
3. If necessary,
SF6 density relay verifier
14
Pressure gauge inspection (or adjustment), mechanism operating pressure (air pressure, hydraulic pressure) calibration, mechanical safety valve calibration
1.1 ~ 3 years
2. After overhaul
15
The operating pressure (air pressure, hydraulic pressure) of the operating mechanism under the switching, closing and reclosing
1. After overhaul
2. After the overhaul of the mechanism
16
Leakage test of hydraulic (gas) pressure operating mechanism
1.1 ~ 3 years
2. After overhaul
3. If necessary,
17
Oil (gas) pump fill pressure and zero - start pressure of the operation time
1.1 ~ 3 years
2. After overhaul
3. If necessary,
18
Hydraulic mechanism and pneumatic mechanism using differential pressure principle to prevent loss of pressure slow minute test
1. After overhaul
2. After the overhaul of the mechanism
19
The action performance of the auxiliary control devices such as locking, preventing jumping and preventing non-complete phase lock
1. After overhaul
2. If necessary,
20
Current transformers, voltage transformers and lightning arresters in GIS
1. After overhaul
2. If necessary,
Test items, cycles and types of multi-oil circuit breakers and low-oil circuit breakers, magnetic blow circuit breakers and low-oil circuit breakers
Order no.
project
Week period
Choose type
1
Insulation resistance
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
The Tg interference of 40.5kV and above non-pure porcelain bushing and multi-oil circuit breaker
1.1 ~ 3 years
2. After overhaul
Dielectric loss tester
3
Leakage current of 40.5kV and above non-pure porcelain bushing and multi-oil circuit breaker
1.1 ~ 3 years
2. After overhaul
Dc high voltage generator
4
Circuit breaker ground, break and interphase ac withstand test
1.1 ~ 3 years (12kV and below)
2. After overhaul
3. When necessary (72.5kV or above)
Test transformer
5
Ac withstand test of 126kV and above oil circuit breaker lifting rod
1. After overhaul
2. If necessary,
Test transformer
6
Ac withstand test of auxiliary circuit and control circuit
1.1 ~ 3 years
2. After overhaul
Test transformer
7
Conductive circuit resistance
1.1 ~ 3 years
2. After overhaul
Circuit resistance tester
8
The shunt resistance value of the arc extinguishing chamber, the capacitance of the shunt capacitor and the Tg advantage
1. After overhaul
2. If necessary,
Dielectric loss tester
9
Closing time and closing time of circuit breaker
After overhaul
High voltage switching dynamic characteristic tester
10
The breaking and closing speed of a circuit breaker
After overhaul
High voltage switching dynamic characteristic tester
11
The synchronism of breaker contact and closing
1. After overhaul
2. If necessary,
High voltage switching dynamic characteristic tester
12
Minimum operating voltage of actuator closing contactor and switching electromagnet
1. After overhaul
2. After overhaul of operating mechanism
13
The insulation resistance and dc resistance of the closing contactor and the coil of the switching electromagnet, the auxiliary circuit and the control circuit
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
Dc resistance tester
14
Insulation oil test in circuit breaker body and casing
15
Circuit breaker's current transformer
1. After overhaul
2. If necessary,
Iii. Test items, cycle and type selection of air circuit breakers
Order no.
project
Week period
Choose type
1
Leakage current of 40.5kV and above supporting porcelain bushing and lifting rod
1.1 ~ 3 years
2. After overhaul
Dc high voltage generator
2
Withstand voltage test
After overhaul
Test transformer
3
Ac withstand test of auxiliary circuit and control circuit
1.1 ~ 3 years
2. After overhaul
Test transformer
4
Conductive circuit resistance
1.1 ~ 3 years
2. After overhaul
Circuit resistance tester
5
The shunt resistance of the arc extinguishing chamber, the capacitance of the equalizing capacitor and the Tg interference
After overhaul
Dielectric loss tester
6
Main and auxiliary contacts, closing time
After overhaul
High voltage switching dynamic characteristic tester
7
Break and close time and closing time of circuit breaker
After overhaul
High voltage switching dynamic characteristic tester
8
The synchronism of three - phase and three - phase split and closing
After overhaul
High voltage switching dynamic characteristic tester
9
The minimum operating voltage of the closing electromagnet coil
After overhaul
Relay protection tester
10
The insulation resistance and dc resistance of the shunt and shunt electromagnet coil
After overhaul
Insulation resistance tester
Dc resistance tester
11
The air pressure drop of tripping, closing and reclosing
After overhaul
12
Minimum operating pressure of a circuit breaker during operation
After overhaul
13
Tight seal of compressed air system, valve and circuit breaker body
After overhaul
14
Defensive ability test for failure to close at low pressure
After overhaul
Iv. Test items, cycles and types of vacuum circuit breakers
Order no.
project
Week period
Choose type
1
Insulation resistance
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
Ac withstand test (ground, phase and break of main circuit of circuit breaker)
1.1 ~ 3 years (12kV and below)
2. After overhaul
3. When necessary (40.5, 72.5kV)
Test transformer
3
Ac withstand test of auxiliary circuit and control circuit
1.1 ~ 3 years
2. After overhaul
Test transformer
4
Conductive circuit resistance
1.1 ~ 3 years
2. After overhaul
Circuit resistance tester
5
The closing time and closing time of the circuit breaker, the timing of closing and closing, the opening distance of the contact head, and the jumping process of closing
After overhaul
High voltage switching dynamic characteristic tester
6
Minimum operating voltage of actuator closing contactor and switching electromagnet
After overhaul
High voltage switching dynamic characteristic tester
7
The insulation resistance and dc resistance of the closing contactor and the coil of the switching electromagnet
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
Dc resistance tester
8
Measurement of vacuum degree in vacuum arc extinguishing chamber
Large and small maintenance
Vacuum tester
9
Check the soft connector clip on the moving contact head for looseness
After overhaul
5. Test items, cycle and type selection of the coincidence unit
Order no.
project
Week period
Choose type
1
Insulation resistance
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
The SF6 coincides with the humidity of the gas in the device
1. After overhaul
2. If necessary,
Portable hygrometer
3
SF6 gas leak
1. After overhaul
2. If necessary,
SF6 gas leak detector
4
The insulation resistance of the control circuit
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
5
Ac withstand test
1.1 ~ 3 years
2. After overhaul
Test transformer
6
Ac withstand test of auxiliary and control circuits
After overhaul
Test transformer
7
Closing time, closing time, triphasic contact, closing timing, contact bouncing
After overhaul
High voltage switching dynamic characteristic tester
8
Oil coincidence unit, closing speed
After overhaul
High voltage switching dynamic characteristic tester
9
Closing the operating voltage of the electromagnet coil
1. After overhaul
2. If necessary,
10
Conductive circuit resistance
1. After overhaul
2. If necessary,
Circuit resistance tester
11
Shunt coil dc resistance
After overhaul
Dc resistance tester
12
The action voltage of the tripping starter
After overhaul
Relay protection tester
13
Close the dc resistance of the electromagnet coil
After overhaul
Dc resistance tester
14
Minimum gate current
After overhaul
High voltage switch debugging power supply
15
Rated operating order
After overhaul
16
The remote operating device is used to check the operation of the reclosing device
After overhaul
17
Check the reliability of single function
After overhaul
18
Insulating oil test
After overhaul
Order no.
project
Week period
Choose type
1
Insulation resistance
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
Ac withstand test
1.1 ~ 3 years
2. After overhaul
Test transformer
3
Conductive circuit resistance
1. After overhaul
2. If necessary,
Circuit resistance tester
4
Closing the operating voltage of the electromagnet coil
1. After overhaul
2. If necessary,
5
The synchronism of closing time and closing time of two phase contacts
After overhaul
High voltage switching dynamic characteristic tester
6
Dc resistance of switching coil
After overhaul
Dc resistance tester
7
The remote operating device is used to check the movement of the segmented device
After overhaul
8
SF6 gas leak
1. After overhaul
2. If necessary,
SF6 gas leak detector
9
SF6 gas humidity
1. After overhaul
2. If necessary,
Order no.
project
Week period
Choose type
1
Insulating oil test
1. After overhaul
2. If necessary,
2
Automatic counting operation
After overhaul
Order no.
project
Week period
Choose type
1
Organic materials support insulation resistance of insulators and lifting rods
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
Secondary circuit insulation resistance
1.1 ~ 3 years
2. After overhaul
3. If necessary,
Insulation resistance tester
3
Ac withstand test
After overhaul
Test transformer
4
Secondary circuit ac withstand test
After overhaul
Test transformer
5
Minimum operating voltage of electric, pneumatic or hydraulic actuator coils
After overhaul
High voltage switching dynamic characteristic tester
6
Resistance measurement of the conducting circuit
After overhaul
Circuit resistance tester
7
Operation of operating mechanism
After overhaul
Order no.
project
Week period
Choose type
1
Insulation resistance of auxiliary and control circuits
1.1 ~ 3 years
2. After overhaul
Insulation resistance tester
2
Ac withstand test of auxiliary circuit and control circuit
After overhaul
Test transformer
3
Circuit breaker speed characteristics
After overhaul
High voltage switching dynamic characteristic tester
4
Closing time of circuit breaker, closing time, triphase and closing time
After overhaul
High voltage switching dynamic characteristic tester
5
Electrical circuit resistance of circuit breakers, isolating switches and isolating plugs
1.1 ~ 3 years
2. After overhaul
Circuit resistance tester
6
Minimum operating pressure of actuator closing contactor and switching electromagnet
1. After overhaul
2. After the overhaul of the mechanism
Relay protection tester
7
The insulation resistance and dc resistance of the closing contactor and the shunt electromagnet coil
After overhaul
Insulation resistance tester
Dc resistance tester
8
Insulation resistance test
1.1 ~ 3 years (12kV or above)
2. After overhaul
Insulation resistance tester
9
Ac withstand test
1.1 ~ 3 years (12kV or above)
2. After overhaul
Test transformer
10
Check the voltage extraction (live display) device
1.1 years
2. After overhaul
11
SF6 gas leak test
1. After overhaul / 2. When necessary
SF6 gas leak detector
12
Calibration of pressure gauges and density relays
1 ~ 3 years
SF6 density relay verifier
13
Preventive performance inspection
1.1 ~ 3 years
2. After overhaul
14
Other requirements for circuit breakers
1. After overhaul
2. If necessary,
15
High voltage switchgear current transformer
1. After overhaul
2. If necessary,
Order no.
project
Week period
Choose type
1
Cadmium nickel battery group capacity test
1.1 years
2. If necessary,
Battery capacity tester
2
Battery discharge termination voltage test
1.1 years
2. If necessary,
Battery discharger
3
Protection inspection
1 year
4
Cadmium nickel screen (cabinet) control bus and power bus insulation resistance
When necessary,
Insulation resistance tester

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