Automatic control resistance capacitance absorber for vacuum circuit breaker
When vacuum circuit breaker and vacuum contactor make or break inductive load such as motor, reactor and transformer, they are easy to produce switching overvoltage. Mt-zr5 type automatic resistance capacitance absorber is a special protection equipment for the above overvoltage.
The technical data of the automatic control resistance capacitance absorber are as follows:
|
Product model |
System nominal voltage (effective value) kV |
Maximum operating voltage of equipment (effective value) kV |
Rated capacitance ±10% |
Power frequency voltage automatically connected to power grid (RMS) kV ± 10% |
Capacitive DC Withstand voltage 10S kV |
Product height H mm |
Scope of protection |
|
MT-ZR5-6Z（F） |
6 |
6.9 |
0.1 |
8 |
34.5 |
223 |
Generator, motor |
|
MT-ZR5-6P（F） |
11 |
252 |
Transformer, reactor, line |
||||
|
MT-ZR5-10Z（F） |
10 |
11.5 |
0.1 |
15 |
45 |
276 |
Generator, motor |
|
MT-ZR5-10P（F） |
19 |
315 |
Transformer, reactor, line |
||||
|
MT-ZR5-35（F） |
35 |
40.5 |
0.1 |
51 |
120 |
575 |
Transformer, reactor, line |
2. For weak insulation equipment in 35kV system, such as furnace transformer, 0.2 μ f product can be specially made to strengthen protection;
3. All kinds of non-standard models can be customized according to the specific requirements of customers;
4. During the capacitor acceptance test, the DC withstand test voltage of the capacitor is 0.75 times of the withstand voltage in the technical data sheet, and the time is 10s.
Conditions of use
1.Suitable for indoor use.
2.Ambient temperature: no less than - 40 ℃, no more than + 40 ℃; relative humidity: no more than -95%（25℃）。
3.The altitude is not more than 3000m. If it exceeds 3000m, it can be specially made according to the actual situation.
4.O seismic intensity 7 and below; the maximum wind speed is not more than 35m / s.
5.Grid frequency: 58-62hz (60Hz system), 48-52hz (50Hz system).
6.The air in the installation site shall not contain chemical corrosive gas and steam, and there shall be no explosive dust.
7.Figure 1: the minimum nominal creepage distance of the jacket of the schematic wiring diagram is not less than 20 mm / kV, which is suitable for use in medium polluted places.
Outline and installation dimensions
The outline and installation dimensions of ~ 10kV products are shown in Figure 2
The outline and installation dimensions of 35kV products are shown in Figure 3
Note: Figure 2The counter terminal in Figure 3 is only available for products with action counter (f). See the installation requirements for the specific wiring mode.The products without action counter have no counter terminal, and the rest are the same.
Figure 2: outline and installation dimensions of 6 ～ 10kV RC absorber
Figure 3: outline and installation dimensions of 35kV RC absorber
