| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Description
VB4 series medium voltage vacuum circuit-breakers with lateral operating mechanism feature the separate pole construction technique.
VS1 vacuum circuit breakers have been designed for indoor use and air insulated switchboards.
Their switching capacity is sufficient to handle any conditions arising from switching of equipment and system components under normal operating and fault conditions, particularly short-circuits, within the parameters of their technical data. The vacuum circuit-breakers of type VB4, designed in column form, can be supplied both as individual units for fixed installation and mounted on chassis. Vacuum circuit-breakers are characterized by their simple and robust construction. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents.
Advantages
Vacuum circuit-breakers have particular advantages for use in networks where there is a high switching frequency in the working current range and/ or where a certain number of short- circuit breaking operations are expected. VS1 vacuum circuit- breakers are suitable for auto reclosing and have exceptionally high operating reliability and long life. The circuit- breakers are notable for their compact design, small dimensions together with high capacity. The operating mechanisms have a low maintenance requirement and the interrupters are maintenance- free throughout their service lives. They are well suited to all load breaking operations which occur in practice, and in particular:
Short-circuit currents;
Overhead lines under load and, no-load conditions;
Cables under load and no-load conditions;
Transformers under load and no-load conditions;
Generators under load and no-load conditions;
Ripple control system;
Capacitor banks(also parallel switching) and Motors with starting currents above 600A;
Fields of application
Below is the list of SM6 range units used in MV/LV transformer substations and industrial distribution substations:
Cable control and protection
Overhead control and protection
Transformers and distribution substations
Motor and transformer control and protection
Generator control and protection
Capacitor bank control and protection
Main characteristics
1) Test voltage according DIN VDE 0670, part 1000, list 2
2) 4000 A with forced cooling
3) 3150 A with forced cooling in AP technology
4) Higher values on request
5) 360 mm for fixed, 280 mm for withdrawable Version
6) Circuit-breaker with heat sink 616 mm
7) Withdrawable Version
8) Circuit-breaker with heat sink 634 mm
| Serial Number |
Item | Unit | Data | |||
| 31.5kA | 40kA | 50kA | ||||
| 1 | Rated voltage | Kv | 12/17.5/24kV | |||
| 2 | Maximum working voltage | Kv | 12 | |||
| 3 | Rated current | A | 1250 1600 2000 2500 |
1250 1600 2500 3150 |
1250 2500 3150 | |
| 4 | Rated short-circuit break current | KA | 31.5 | 40 | 50 | |
| 5 | Rated short-circuit close current (peak value) | KA | 80 | 100 | 125 | |
| 6 | Rated withstand current (peak value) | KA | 80 | 100 | 125 | |
| 7 | 4S Rated little withstand current | KA | 31.5 | 40 | 50 | |
| 8 | Rated insulation level | Industrial frequency Withstand voltage |
KA | 42/50/60 | ||
| Thunder impulse Withstand voltage |
75/95/125 | |||||
| 9 | Rated operation order | Off-0.3S on and off-180S-on and off | ||||
| 10 | Mechanical life | Times | 10000 | |||
| 11 | Rated short-circuit current break and close time | Times | 50 | |||
| 12 | Speak and move organization amount Assign the curre t of the floodgate(DC) |
V | 110220 | |||
| 13 | Speak and move organization amount Equal to the curre t of the floodgate(DC) |
V | 110220 | |||
| 14 | Switching distance of the contact | mm | >11 | |||
| 15 | Ultra journey(touches the head Springand compress length) |
mm | 4+/-0.5 | |||
| 16 | Three-phase breaking into shut Floodgate sex of the same period |
Ms | <2 | |||
| 17 | Touch the head and shut a Floodgate of time of bouncing |
Ms | <2 | |||
| 18 | Average speed of breaking brake | M/s | 0.9~1.2 | |||
| 19 | Average speed of closing brake | M/s | 0.6~0.8 | |||
| 20 | Time of breaking brake | Operate it under the Voltage highest |
S | <0.05 | ||
| Operate it under the Voltage lowest |
<0.08 | |||||
| 21 | Time of colsing brake | S | <0.1 | |||
| 22 | Each the resistance of main return circuit | U Ω | <40 | |||
| 23 | Allowance abrasion cumulated thickness Of the moving and stationary contact |
mm | 3 | |||
){kind=link}