Introduction
Vacuum circuit breaker (VCB) is an electrical switch designed to protect electrical circuits from damage caused by overload or short circuit. Our TAV2 indoor assembly poles type vacuum circuit breaker (VCB) is the latest domestic achievement. It is suitable for Air-insulated Switchgear (Ampower-KYN28A, ABB-Unigear, Siemens-Nxair, Schneider-Nvnex and so on) and able to be interchanged with similar products. And it is available in many varieties, excellent in performance, and widely applicable to:
1. Energy and infrastructure: power plants, 220KV/110KV substations, primary and secondary distribution systems.
2. Industrial production: power supply systems for pulp and paper, construction materials (glass, cement, ceramics), steel and metal products, aluminum, petrochemical and other industrial productions.
3. Building: power supply system of large, medium-sized buildings and residential areas.
4. Other: petrochemical, transportation, and mining areas.
Standard Compliance
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IEC 62271-100
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High Voltage AC Circuit Breakers
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IEC 60694
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Common Specification for High Voltage Switchgear and Control Gear Standards
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GB1984-2003
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High Voltage AC Circuit Breakers
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GB/T11022-1999
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Common Technical Requirements for HV Switchgear
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DL/T 402-1999
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Technical Specification for HV AC Circuit Breaker
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DL/T 403-2000
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Technical Specification for12kV- 40.5kV indoor HV AC Circuit Breaker
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DL/T 593-2006
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Common Specification for HV Switchgear Enquiry and Orders
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JB/T 3855-1996
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Technical Specification for 3.6kV- 40.5kV indoor HV AC Circuit Breaker
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Complete Series
Mounting way: Fixed type, Withdrawable type, Side mounting type, Floor type(40.5kV)
CB Truck drive way: Manual, Electric
Rated voltage: 6kV(7.2kV), 10kV (12kV), 15kV(17.5kV), 20kV (24kV), 36kV (40.5kV)
Rated current: 630A, 1250A,1600A, 2000A, 2500A, 3150A,4000A,
Rated short circuit breaking current: 20kA, 25kA, 31.5kA, 40kA
Technical Parameters
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Rated voltage
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Ur [kV]
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7.2/12/17.5
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24
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40.5
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Rated insulation voltage
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Us [kV]
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7.2/12/17.5
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24
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40.5
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Power frequency withstand voltage
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Ud (1min)[kV]
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25/42/45
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79
|
95
|
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Lightning impulse withstand voltage
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Up [kV]
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60/75/95
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145
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185
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Rated frequency
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Fr [Hz]
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50/60
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50/60
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50/60
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Rated current
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Ir [A]
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630, 1250
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630, 1250
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630,1250, 1600,2000, 2500,3150, 4000
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1250, 1600, 2000,2500, 3150, 4000
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630, 1250
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630, 1250
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630, 1250, 1600,2000, 2500,3150
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630, 1250
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630, 1250
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630, 1250, 1600,2000, 2500,3150
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|
Rated breaking capacity
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Isc [kA]
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20
|
25
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31.5
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40
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20
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25
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31.5
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20
|
25
|
31.5
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Rated short time withstand current
(4 seconds)
|
Ik [kA]
|
20
|
25
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31.5
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40
|
20
|
25
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31.5
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20
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25
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31.5
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|
Closing capacity
|
Ip [kA]
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50
|
63
|
80
|
100
|
50
|
63
|
80
|
50
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63
|
80
|
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Order of operations
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[O-0.3s-CO-15s-CO]
[O-0.3s-CO-180s-CO]
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■
|
■
|
■
|
─
|
■
|
■
|
■
|
■
|
■
|
■
|
|
[O-180s-CO-180s-CO]
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─
|
─
|
─
|
■
|
─
|
─
|
─
|
─
|
─
|
─
|
|
Opening time
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[ms]
|
≤ 50
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≤ 50
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≤ 50
|
|
Arcing time
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[ms]
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≤ 15
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≤ 15
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≤ 15
|
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Breaking time
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[ms]
|
≤ 70
|
≤ 70
|
≤ 70
|
|
Closing operation rated voltage
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[V]
|
AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
|
|
Opening operation rated voltage
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[V]
|
AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
|
|
Charging motor rated voltage
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[V]
|
AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
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AC/DC 110/220/230/48/24
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|
Charging motor rated power
|
[W]
|
70
|
70, 120
|
70
|
70, 120
|
70
|
70, 120
|
|
Energy storage time
|
[s]
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≤ 15
|
≤ 15
|
≤ 15
|
|
Mechanical endurance
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[ cycles ]
|
10,000/20,000/30,000
|
20,000
|
20,000
|
|
Auxiliary switch
|
NO+NC
|
8NO+8NC (Max.10NO+10NC)
|
8NO+8NC (Max.10NO+10NC)
|
8NO+8NC (Max.10NO+10NC)
|
|
Secondary circuit power frequency withstand voltage (1min)
|
[V]
|
2,000
|
2,000
|
2,000
|
|
Short circuit current breaking times
|
[ cycles ]
|
274
|
274
|
274
|
|
Rated short time current duration
|
[s]
|
4
|
4
|
4
|
|
Breaker grading
|
[ms]
|
M2-E2-C2
|
M2-E2-C2
|
M2-E2-C2
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