Side Mounted 1600A Vmd Embedded Poles Circuit Breaker 17.5kv

Model NO.: VMD Operation: Manual & Electric DC Circuit Breaker Arc-extinguishing Medium: Vcb DC Circuit Breaker Structure: Vcb DC Circuit Breaker Type: Circuit Breaker Certification: ISO9001-2000 Rated Current: 1600A DC Circuit Breaker Lightning Impulse Withstand Voltage: 95 Kv DC Circuit Breaker Rated Short-Time Withstand Current: 25/31.5 Ka DC Circuit Breaker Rated Short-Circuit Breaking Current: 25/31.5 Ka DC Circuit Breaker Transport Package: Wooden Case Packing (900*900*1000mm) Origin: Cixi, Ningbo DC Circuit Breaker Breaking Capacity: Middle& High Voltage DC Circuit Breaker Speed: Normal Type Circuit Breaker Installation: Fixed & Withdrawal DC Circuit Breaker Poles Number: 3 Function: Overcurrent Protection Rated Voltage: 17.5kv DC Circuit Breaker 1 Min Power Frequency Withstand Voltage: 50 Kv DC Circuit Breaker Rated Frequency: 50 Hz DC Circuit Breaker Rated Peak Withstand Current: 63/80 Ka DC Circuit Breaker Trademark: Mingde DC circuit breaker Specification: OHSAS/ OHSMS 18001, ISO9001 HS Code: 8535210000 Side Mounted 1600A Vmd Embedded Poles Circuit Breaker 17.5kv

Overview
   1. The complete specification of VMD series Vacuum Circuit Breaker can meet customers' different needs.
  2. VMD adopts the latest embedded poles and low-resistance vacuum interrupter. With main conductive circuit sealed in epoxy resin, the Insulation performance will be more stable.
  3. VMD employs an accurate gear driving system, instead of the traditional chain wheel driving system.  
  4. VMD series circuit breaker passed Type Test Report according to GB and IEC standards.
  5. VMD series circuit breaker has exported to 26 countries and regions in the world.   
Main parameters

    

Item	unit	Data
Rated voltage	kV	17.5
1 min power frequency withstand voltage	kV	50
Lightning impulse withstand voltage	kV	95
Rated frequency	Hz	50
Rated current	A	1600
Rated short-time withstand current	kA	25, 31.5
Rated peak withstand current	kA	50,63,80
Rated short-circuit breaking current	kA	20,25,31.5
Rated short-circuit closing current	kA	50,63
Rated short-circuit duration	S	4
Contact over-travel	mm	3.5±0.5
Clearance between open contacts	mm	9±1/11±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Opening time	ms	35-60
Closing time	ms	20-45
Rated operation sequence		O-0.3s-CO-180s-CO(<40kA)/ O-180s-CO-180s-CO(≥40kA)
Mechanical life	cycles	10000,30000

 
External Dimension 


 VMD2-7.2, 12, 17.5-pole center distance 210mm 

No.	Rated Voltage(kV)	Rated current(A)	Short-circuit breaking current(kA)	h1(mm)	h2(mm)	h(mm)	A(mm)	B(mm)
1	7.2,12,17.5	630-1250	20-31.5	260	205	622	438	609
2	7.2,12,17.5	630-1600	20-31.5	280	275	637	432	598
3	7.2,12	1250-1600	40	295	310	697	432	598
4	7.2,12	2000	31.5-40	295	310	697	432	598

VMD2-7.2, 12, 17.5-pole center distance 275mm 

No.	Rated Voltage(kV)	Rated current(A)	Short-circuit breaking current(kA)	h1(mm)	h2(mm)	h(mm)	A(mm)	B(mm)
1	7.2,12,17.5	630-1250	20-31.5	280	275	637	432	598
2	7.2,12	1250-1600	40	295	310	697	432	598
3	7.2,12	1600-2500	25-40	295	310	697	432	586
4	7.2,12	3150-4000	31.5-40	295	310	697	432	586
5	7.2,12	3150-4000	31.5-40	295	310	733	432	586

  Packaging, transportation and storage precautions

(1) Circuit breaker should be in the state of opening and energy storage spring in a state without energy storage when packing. It should be in the state of opening and energy storage spring in a state without energy storage when packing. And it should be fixed on the bottom of the wooden case, should have waterproof measures and complete package labels.
(2) Circuit breakers can't invert and avoid strong vibration, rain, surface damage, and components lost when transportation.
(3) When loading the circuit breaker, we suggest the following tools: crane, forklift and driving. When lifting the circuit breaker, we should not hook on the body or pole of the circuit breaker, but on the lifting hole which has the lifting mark.
(4) When circuit breaker has a long-term storage, it should be in a state of opening and energy storage spring in a state without energy storage and placed in dry ventilated indoor preventing from moisture, vibration control and harmful gas erosion, and regularly checked whether environment meets the requirements.
(5)When first use products after long-term storage, it need to have a power frequency withstand voltage insulation testing.
Certification

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