• 72.5kv Vacuum Dead Tank Circuit Breaker
  • 72.5kv Vacuum Dead Tank Circuit Breaker

72.5kv Vacuum Dead Tank Circuit Breaker

Breaking Capacity: High Voltage Circuit Breakers
Operation: Electric Type
Speed: High-Speed Circuit Breaker
Arc-extinguishing Medium: Vacuum
Function: Circuit-Breaker Failure Protection
Certification: ISO9001-2000
Samples:
US$ 60000/Piece 1 Piece(Min.Order)
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Customization:
Gold Member Since 2017

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Rating: 5.0/5
Manufacturer/Factory, Trading Company, Group Corporation

Basic Info.

Model NO.
HG6
Trademark
HEMG
Origin
China
Production Capacity
10000

Product Description

72.5kv Vacuum Dead Tank Circuit Breaker
ITEM FEATURES UNITS REQUESTED
1 Type of circuit breaker required   Dead tank - VACUUM
2 Applicable standards   IEC62271-100
3 Installation Site   Outdoor, 1000 meters above sea level
4 Circuit Breaker Characteristics    
4.1 Number of poles   3
4.2 Rated voltage kV 72.5
4.3 Dielectric rigidity to atmospheric impulses at sea level KVpk 325
4.4 Dielectric rigidity at industrial frequency at sea level kV 140
4.5 Minimum leakage distance of the insulation mm 1842
4.6 Nominal frecuency Hz 60
4.7 Rated current A 1250
4.8 Nominal line interruption current A 50
4.9 Rated capacity of interruption of small inductive currents  A 50
4.10 Rated short circuit interruption capacity kA 40
  a) Effective value of the alternating component kArms 40
  b) Effective value of the continuous component % 37
  c) "K" voltage factor   1.21
4.11 Opening factor of the first pole    1.5
4.12 Rate for increasing the recovery voltage to 100% of the interruption capacity kV/µs 0.75
4.13 Nominal short-circuit capacity kA 104
4.14 Nominal sequence of operation   0-0,3s-CO-15s-CO
4.15 Nominal short circuit duration s 3
4.16 Nominal interruption capacity in phase mismatch kA 2.5
4.17 Maximum total interruption time ms 40
4.18 Maximum dead time for high speed reclosing ms 300
4.19 Adjustment range for reclosing ms 330
4.20 Mechanism of operation (closing and firing)   motor - spring
4.21 Mechanical endurance class   M2
4.22 Control voltage / motor voltage   125
4.23 Insulators material   Porcelain
4.24 Connector suitable for copper cable per pole: AWG 4/0 - 500 MCM
5 Bushing type current transformers    
5.1 Number of transformers in each bushing   2
5.2 Number of secondary windings in each transformer   1
5.3 Maximum nominal nominal current    
  b) For Transformer Circuit Breaker: Protection
Measurement
A 1200
600
5.4 Secondary nominal current A 5
5.5 Nominal current of short duration 1s % 120
5.6   kArms 40
5.7 Dynamic current kApk 104
5.8 Nominal capacity of output (burden) and accuracy class in:    
  1) Secondary winding N1 precision / load (burden)   20VA Cl. 5P20
  2) Secondary winding N2 precision / load (burden)   20VA Cl. 5P20
  3) Secondary winding N3 precision / load (burden)   20VA Cl. 5P20
  4) Secondary winding N4 precision / load (burden)   20VA Cl. 0,2
5.9 Multiple relationship according to ANSI / IEEE C57.13: YES / NO    
  b) For Transformer circuit breaker: (1200/1000/900/800/600/500/400/300/200/100/5 A) and (600/500/450/400/300/250/200/150/100 / 50/5 A)   YES
6 Local control panel    
6.1 Degree of protection   IP55
6.2 Equipped with heating controlled by humidity detector (YES / NO)   YES
6.3 Interior lighting (YES / NO), control by door switch   YES
6.4 Opening and closing controls, electrical and mechanical   YES
6.5 Terminals for signal acquisition for the SCADA system   YES
7 Maximum dimensions    
  a) Long mm 2300
  b) Wide mm 2125
  c) Height mm 3512
ITEM FEATURES UNITS REQUESTED
1 Type of circuit breaker required   Dead tank - VACUUM
2 Applicable standards   IEC62271-100
3 Installation Site   Outdoor, 1000 meters above sea level
4 Circuit Breaker Characteristics    
4.1 Number of poles   3
4.2 Rated voltage kV 72.5
4.3 Dielectric rigidity to atmospheric impulses at sea level KVpk 325
4.4 Dielectric rigidity at industrial frequency at sea level kV 140
4.5 Minimum leakage distance of the insulation mm 1842
4.6 Nominal frecuency Hz 60
4.7 Rated current A 1250
4.8 Nominal line interruption current A 50
4.9 Rated capacity of interruption of small inductive currents  A 50
4.10 Rated short circuit interruption capacity kA 40
  a) Effective value of the alternating component kArms 40
  b) Effective value of the continuous component % 37
  c) "K" voltage factor   1.21
4.11 Opening factor of the first pole    1.5
4.12 Rate for increasing the recovery voltage to 100% of the interruption capacity kV/µs 0.75
4.13 Nominal short-circuit capacity kA 104
4.14 Nominal sequence of operation   0-0,3s-CO-15s-CO
4.15 Nominal short circuit duration s 3
4.16 Nominal interruption capacity in phase mismatch kA 2.5
4.17 Maximum total interruption time ms 40
4.18 Maximum dead time for high speed reclosing ms 300
4.19 Adjustment range for reclosing ms 330
4.20 Mechanism of operation (closing and firing)   motor - spring
4.21 Mechanical endurance class   M2
4.22 Control voltage / motor voltage   125
4.23 Insulators material   Porcelain
4.24 Connector suitable for copper cable per pole: AWG 4/0 - 500 MCM
5 Bushing type current transformers    
5.1 Number of transformers in each bushing   2
5.2 Number of secondary windings in each transformer   1
5.3 Maximum nominal nominal current    
  b) For Transformer Circuit Breaker: Protection
Measurement
A 1200
600
5.4 Secondary nominal current A 5
5.5 Nominal current of short duration 1s % 120
5.6   kArms 40
5.7 Dynamic current kApk 104
5.8 Nominal capacity of output (burden) and accuracy class in:    
  1) Secondary winding N1 precision / load (burden)   20VA Cl. 5P20
  2) Secondary winding N2 precision / load (burden)   20VA Cl. 5P20
  3) Secondary winding N3 precision / load (burden)   20VA Cl. 5P20
  4) Secondary winding N4 precision / load (burden)   20VA Cl. 0,2
5.9 Multiple relationship according to ANSI / IEEE C57.13: YES / NO    
  b) For Transformer circuit breaker: (1200/1000/900/800/600/500/400/300/200/100/5 A) and (600/500/450/400/300/250/200/150/100 / 50/5 A)   YES
6 Local control panel    
6.1 Degree of protection   IP55
6.2 Equipped with heating controlled by humidity detector (YES / NO)   YES
6.3 Interior lighting (YES / NO), control by door switch   YES
6.4 Opening and closing controls, electrical and mechanical   YES
6.5 Terminals for signal acquisition for the SCADA system   YES
7 Maximum dimensions    
  a) Long mm 2300
  b) Wide mm 2125
  c) Height mm 3512

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