Specifications
1. Modularized design
2. Anti-interference design
3. Compact structure
Spring Mechanism
1. Silverstone Electric's spring mechanism circuit breaker is equipped with a modular mechanical actuating mechanism that is based on spring energy storage and free tripping, the simple and handiness allow free replacement, simple and quick setting and secondary accessory replacement, and the service/ maintenance cost can be significantly reduced.
2. Gear transmission is adopted instead of conventional chains, and the transmission efficiency can rise to 98.5% or higher.
3. The overall mechanism is composed of 6 sections namely energy storage spring, energy storage dynamo, driving axle, shaft, trip and lock catch. The dimensions of driving section are reduced to 30% of conventional spring mechanisms. Based on considerable structural optimization and reduction in overall volume, the space occupancy rate is restricted to 60% of that of conventional mechanisms.
4. All drive components are made of special materials by high-precision machining, such that the overall mechanical life and stability can be considerably improved. Its mechanical life is up to 20,000 times, which at least equals to twice the lifespan of conventional spring mechanism.
5. The spring mechanism is equipped with a mechanism controller that is capable of the functions such as bounce prevention, coil burning prevention, control supply low-voltage closing rejection and alarming. Its control current is light, and either AC or DC power supplies can be utilized.
Permanent magnetic mechanism
1. Silverstone Electric's permanent magnetic mechanism circuit breaker is equipped with a mature, reliable and new-type permanent magnetic operating mechanism, and the failure rate is extremely, such that the circuit breaker is maintenance-free, and the accounting life is up to 100,000 times.
2. High coincidence of motion characteristic of permanent magnetic actuating mechanism and the arc quenching characteristics of vacuum arc extinguish chamber ensures that the electrical endurance of circuit breaker is substantially increased to up to 30,000 times depending on different arc extinguish chamber selected.
3. The permanent magnetic mechanism is equipped with a permanent magnetic mechanism controller which has functions like the bounce prevention, coil burning prevention, control-supply low-voltage closing rejection and alarm. Its control current is light, and both AC and DC power supplies can be utilized.
4. When the power supply to external control circuit disappears, the circuit breaker can conduct reliable opening-closing-opening operation once such that the power supply stability of the product is greatly improved.
5. The permanent magnetic mechanism is provided with mechanical/manual opening function; its opening speed is identical with power-driven opening speed, and on-load opening can be performed in case a fault occurs.
6. Silverstone Electric's VCB series take the lead in implementing perfect interchange and integration of permanent magnetic mechanism and spring mechanism by 100%, the space can be reduced by 50% or higher than that for traditional products, and various types of requirement can be fulfilled.
Main technical parameters
No. | Parameter name | Unit | Data |
1 | Rated voltage | kV | 12 |
2 | Rated insulation level | 1min, power frequency withstand voltage (effective value) | 42 |
Rated lightning impulse withstand voltage (peak value) | 75 |
3 | Rated working frequency | Hz | 50 |
4 | Rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
5 | Rated short-circuit opening current | kA | 20 25 31.5 40 50 |
6 | Rated short-circuit closing current | 50 63 80 100 125 |
7 | Rated peak withstand current | 50 63 80 100 125 |
8 | Rated short time withstand current | 20 25 31.5 40 50 |
9 | Rated short-circuit current opening times | Times | 50 |
10 | Rated duration of short circuit | S | 4 |
11 | Rated operating sequence |
| Opening-0.3S-closing-opening -180S-closing-opening |
12 | Mechanical life of vacuum arc extinguish chamber | Times | 10000 30000 60000 |
13 | Mechanical life of operating mechanism | Times | Spring 20,000/permanent magnetic 100,000 |
14 | Rated opening current of single capacitor bank | A | 630 |
15 | Rated opening current of back-to-back capacitor bank | 400 |
16 | Rated out-of-phase opening current | kA | 7.9 |
17 | Rated opening current of cable charging | A | 25 |
18 | Closing/opening operating voltage | V | 220V DC/AC 110V DC/AC |
Suzhou Silverstone Electric Specialises in Power Transmission, Distribution, Electrical Automation Solutions, Power Quality Solutions, Hydro Power, Solar Power, Power Generation and Substation EPC Consultant.
We manufactures and trades
Power Transformer
--Dry type Transformer (up to 35kV)
--Oil Immersed Transformer (up to 230kV)
GIS (Gas Isolated Switchgear)
--Up to 145kV Compact Gas Insulated Switchgear (GIS)
--Up to 230kV Gas Insulated Switchgear (GIS)
MV Switchgear
--Metal clad AC Enclosed Switchgear
--Packaged Type AC Metal Enclosed Switchgear
--Gas Insulated Switchgear
LV Switchgear
--LV Withdrawable Switchgear
--LV Fixed Switchgear
MV Circuit Breaker
--Vacuum Circuit Breaker
--SF6 Circuit Breaker
--MV Earthing Switch
--Load Break Switch
Reactor
--Dry-type Air Core Reactor Series
--Dry-type Core Series Shunt Reactor
--HV Oil-immersed Shunt Reactor
HV&LV Busbar Trunking System
--Busbar Trunking System (Busway)
--Common Enclosure Busbar
HV Circuit Breaker & Disconnector
--HV Circuit Breaker
--SF6 Circuit Breaker
--HV Disconnector
--Outdoor AC discontector
--HV Earthing Switch
--Outdoor AC Earthing Switch
Capacitor
--All film high voltage shunt capacitor
--High-voltage shunt capacitor banks
--Atlernating filter capacitor complete equipments
Power Protection & Automation
Reactive Compensation
High Voltage Frequency Reactor
Medium voltage variable frequency drives
Medium voltage soft starter
STATCOM (Static synchronous compensator)
Static var compensator with Magnetically controlled reactor
TSC (Thyristor switched capacitor banks)
Active power filter