Place of Origin : Ningbo,China
Post Date : 12-04-2012
Expiry Date : 12-05-2012

GB1984 Power System VMD1 12kV Vacuum Circuit Breaker / Rated Frequency 50 Hz

Technical Parameters

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NO | Item | Unit | Technical Date |   |
1 | Rated Voltage | KV | 12 |   |
2 | Rated Insulating Level | Rated Short Time Power Frequency Withstand Voltage(1min)           | 42 |   |
Raed Lighting Inpulse Withstand Voltage (peak Value)              | 75 |   |
3 | Rated Frequency | Hz | 50 |   |
4 | Rated Current | A | 630 | 630 | 1250 | 1250 |   |
1250 | 1250 | 1600 | 1600 |   |
　 | 　 | 2000 | 2000 |   |
2500 | 2500 |   |
3150 | 3150 |   |
4000 | 4000 |   |
5 | Rated Short Circuit Breaking Current        | KA | 20 | 25 | 31.5 | 40 |   |
6 | Rated Short Time Withstand Current           | 20 | 25 | 31.5 | 40 |   |
7 | Rated Peak Withstand Current  | 50 | 63 | 80 | 100 |   |
8 | Rated Short-circuit Closing Current (peak Value) | 50 | 63 | 80 | 100 |   |
9 | 4S Rated Short-time Withstand Current  4s | 20 | 25 | 31.5 | 40 |   |
10 | Rated Shock Steady Current | 50 | 63 | 80 | 100 |   |
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 | A | 630/400 (The Value Shoule Be 800/400 While The Current Is 40kA)                                 |   |
13 | Duration Of Rated Short-circuit Current | S | 4 |   |
14 | Power Frequency Withstand Voltage Of Secondary Circuit | V | 2000 |   |
15 | Rated Operationl Voltage | Making Coil | AC110/220   DC110/220 |   |
Breaking Coil | AC110/220   DC110/220 |   |
Energy-storage Motor | AC110/220   DC110/220 |   |
16 | Making Time  (under Rated Voltage) | Ms | 35-70 |   |
17 | Brealing Time(under Rated Voltage) | 20-45 |   |
18 | Permitted Abrasion Thickness Of Moving And Fixed Contacts | Mm | 3 |   |
19 | Energy Storage Times | S | ≤15 |   |
20 | Contactor Space | Mm | 9± 1 |   |
21 | Contacting Travel | 3---4 |   |
22 | Bounce Time Of Contactor During Making | Ms | ≤2 |   |
23 | Different Time Of Breaking / Making Of 3 Phases | ≤2 |   |
24 | Average Breaking Speed | 0.9-1.3 |   |
25 | Average Making Speed | 0.4-0.8 |   |
26 | Rebound Amplitude Of Contact Breaking | Mm | ≤3 |   |
27 | Conductance Circuit Resistance | µΩ | ≤50 (630A) |   |
≤45(1250A) |   |
≤35(1600A-2000A) |   |
≤25(More Than 2500A) |   |
28 | The Contacting Pressure Of Of Contactor During Making | N | 2000±200(20kA) |   |
2400±200(35kA) |   |
3100±200(31.5kA) |   |
4750±250(40kA) |   |
29 | Rated Operating Sequence | 　 | O- θ -CO-180s-CO |   |
The Average Breaking Speed Is That Of Contactor’s First 6mm . The Average Making Speed Refers To The Average Speed Of Total Contactor Space .When The Rated Short Circuit Breaking Current Is Less Than 40kA, θ Is Equal To 0.3S. When The Short Circuit Breaking Current Is More Than Or Equal To  40kA, θ Is Equal To 180S |   |
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Outline Dimension Drawing

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Summary

The VMD1 Series Indoor Circuit-breaker Is Our Independent Developed New Generation 12 Kv Vacuuum Circuit Breaker .Its Main Characters As Follows:the Conductance Circuitis Installed In An Three-phase Insulating Sleeve , Its Mechanism And Conductance Circuitadopts Front And Rear Layout. And The Mechanism Is Our Deveoped New Design, With Simple Construction, Reliable Operation, And Rich Manufacturing Experiences Of Million Sets , Used  And Learned By Many High-end Vacuum Circuit Breaker Manufacturers.

 

Technical Standards

All The Technical Parameters Of Breaker Completely Satisfythe Standards Of GB1984 AC Highvoltage Breaker, GB/T 11022 -1999 Common Specifications For High-Voltage Switchgear And Controlgear Standards, China Power Sector Standards DL403.

Also Meet The Requirements Of IEC62271-100, IEC56 And Other Main Industrialized Country’s Similar Standards

 

Testing

VMD1 Series Circuit Breaker Have Passed Has Passed Following

Test , To Ensure The Product’s Safe Operation.

 

Type Tests :power-frequency Withstand Voltage Tests , Lighting Impact Withstand Voltage Tests, , Temperature Rising Tests, Short-time Withstand Current Tests , Peak Withstand Current Tests , Short Circuit Breaking Ability Tests , Mechanical Lift Tests, Ect

 

Routine Test Before Out Of Factory:mechanical Performance Test  , Power-frequency Withstand Voltage Tests Of The Main Circuit , Insulating Property  Tests On Control And Auxiliary Circuits, Measurement Of Ther Resistance Of The Main Circuit , Interlock Operatingtests , Mechanical Operating Tests, Electrical Equipment Operating Tests.

 

Scope Of Application

It Is Universally Used In Power Plant , Electric Network , Metallurgy Industrypetrochemical Industry and Infrastructures, Such As Airport , Subway, Building.

When The VMD1 Circuit Breaker Is In Distribution System, It Can Be Applied To Control And Protect Cable , Trolly Wire , Transformer, Generator And Capacitor Bank.

 

Safety

VMD1 Circuit Breaker Possesses Perfect Mechanical And Electric Interlock Equipment , Meanwhile , Its High Reliable Operatingperformance And Mechanical Life , Coodinated With Matched Switchgear Cabinet , To Ensure Normalpower Distribution , Operator And Equipment’s Safety.