24kv AC Spring Operated Vmd Series Breaker 630A 1250A 2000A 2500A
Model No.: VMD
The complete specification of VMD series vacuum circuit breaker can meet customers' different needs. It adopts the latest embedded poles and low-resistance vacuum interrupter and employs an accurate gear driving system in the place of tradidtional chain wheel driving system. With main conductive circuit sealed in epoxy resin, the Insulation performance will be more stable. VMD series circuit breaker passed Type Test Report according to GB and IEC standards and has been exported to 26 countries and regions in the world.
|2||Rated insulating level||Rated short time power frequency withstand voltage(1 min)||65|
|Rated lighting impulse withstand voltage(peak value)||125|
|5||Rated short circuit breaking current||KA||20||25||31.5|
|6||Rated short time withstand current||20||25||31.5|
|7||Rated peak withstand current||50||63||80|
|8||Rated short-circuit making current (peak value)||50||63||80|
|9||4S Rated short-time withstand current||20||25||31.5|
|10||Rated peak value of current||50||63||80|
|11||Rated making surge current of capacitor bank||12.5(The frequency is less than 1000Hz)|
|12||Rated breaking current of single/symmetrical capacitor bank||630/400(The value should be 800/400 while the current is 40KA)|
|14||Duration of rated short-circuit current||s||4|
|15||Power frequency withstand voltage of secondary circuit||V||2000|
|16||Rated operational voltage||Making coil||AC110/220 DC110/220|
|Breaking coil||AC110/220 DC110/220|
|Energy-storage motor||AC110/220 DC110/220|
|17||Making time(under Rated voltage)||ms||≤60|
|18||Breaking time(under Rated voltage)||≤45|
|19||Permitted abrasion thickness of moving and fixed contacts||mm||3|
|20||Energy storage time||S||<=15|
|24||Three pole making/breaking non-simultaneity||<=2|
|25||Average breaking speed||1.1~1.7|
|26||Average making speed||0.6~1.1|
|27||Contact pumping (breaking)||mm||≤3|
|28||Conductance circuit resistance||μΩ ||Withdrawal Style||Rated current|
|≤25||More than 2500A|
|29||Rated operating order||O-0.3s-CO-180s-CO|
Normal Operating Environment Condition
a) Normal operating environment condition
Highest temperature: +40ºC
Lowest temperature: -15ºC
b) Environment humidity
Daily mean relative humidity: ≤95%
Monthly mean relative humidity: ≤90%
Daily mean saturated vapor pressure: ≤2.2×10-3 MPa
Monthly mean saturated vapor pressure: ≤1.8×10-3 MPa
c) Altitude: below 1000m area;
d) Earthquake intensity: no more than 8 degree;
e) The product shall be away from weep, fire and explosion, chemical corrosion and
strenuous vibration place.
Special Operating Condition
Please consult with manufacturer on manufacturing technology when operating environment is the climatic environment with high altitude, high humidity and great temperature change or other special environment condition.
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.
Contact us if you need more details on Circuit Breaker. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Breaker、Vacuum Circuit Breaker. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Circuit Breaker
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