SVG Type Magnetic Control Fast Vacuum Circuit Breaker

Product introduction

SVG-12/17.5-630/1250-25 magnetron fast circuit breaker is an indoor medium voltage atmospheric pressure gas insulated ring network cabinet based on semi-hard magnetic material operating mechanism. The main equipment consists of SVG-12/17.5-630/1250-25 magnetron fast circuit breaker body and supporting SVG380D control terminal.

Product standard

GB 1984-2014 AC High Voltage Circuit BreakerJB 3855-2008 High Voltage AC Vacuum Circuit BreakerDL 403-2000 Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers

Ambient condition

1.3.1 Altitude: Areas up to 2000 meters.1.3.2 Ambient temperature: Maximum temperature: +70℃, minimum temperature: -40℃ , daily average temperature not greater than: +30℃.1.3.3 Ambient humidity: Daily average relative humidity: less than or equal to 95%, monthly average relative humidity: less than or equal to 90%.

technical parameter (SVG Breaker Body)

Table 1: Technical parameters of circuit breaker body

Δ Note: All work in the installation and operation of circuit breakers should be carried out by personnel who have been specially trained and have a detailed understanding of the performance of the switchgear, and appropriate protection and preventive measures must be taken during the work.

Overall structure diagram of circuit breaker

 

 

Figure 1: Overall view

 

legend:

①Moving contact of circuit breaker;

②Static contacts of circuit breaker;

③Fix the main pole;

④Circuit breaker mechanism room;

⑤Grounded threads;

⑥Circuit breaker nameplate;

⑦Circuit breaker terminal;

⑧Manual operation of circuit breaker flat position;

Circuit breaker structure diagram

Lateral view:

Figure 2: Right view                                                                                   Figure 3: Left view

Front view of circuit breaker:

Figure 4: front view of the circuit breaker (emergency opening by manual insertion);       Figure 5: rear view of the circuit breaker

Reference diagram of the overall size of the circuit breaker:

Figure 6: Overall size of circuit breaker

The circuit breaker has a phase spacing of 180, a total pole height of 278, a box length of 530, and a box width of 140, with the total height of the entire unit being 445 mm. The static contact copper busbar measures 6010 mm, and the moving contact soft copper busbar is 508 mm. The static contact copper busbar is fixed at a distance of 28 mm, with a fixing hole size of 2*Φ10 mm. The moving contact soft copper busbar has a fixing hole size of Φ13 mm, and the grounding nut hole is M10.

Circuit breaker fixed size diagram:

Figure 7: Front view fixed size diagram

Figure 8: Rear view external size diagra

The circuit breaker is fixed by auxiliary clamping plates on both sides, and four M10-30 fastening screws are selected for each side.

Reference diagram of circuit breaker moving/static contact wiring dimensions:

Figure 9: front view of the size of the hard copper bars of the static contacts of the circuit breaker

 

 

Figure 10: top view of the size of the soft copper bars of the moving contacts of the circuit breaker

Figure ①shows the dimensions of the moving contact flexible copper busbar, which is typically configured with a 630A rating and features a thickness of 10mm and a width of 50mm. Special orders require specific instructions. Figure ②shows the dimensions of the stationary contact rigid copper busbar, which is generally 10mm thick and 60mm wide, meeting the basic requirements for a 1250A rating. The stationary contact copper busbar is fixed at a distance of 28mm, with two Φ10mm fixing holes. The moving contact flexible copper busbar uses a Φ13mm fixing hole. When fixing the copper busbar, it is important to consider the redundancy space for switch operations to ensure normal operation.

Reference diagram of the size of the reliable grounding point of the equipment:

Figure 11: Size of reliable connection point for circuit breaker

Note ⑤is the location map of the reliable grounding point of the equipment. It is generally recommended to use M10-30 specification screw for grounding bolt.

The outer box is a carton, and the inner protection is polystyrene foam. There are no special requirements for transportation.

(1) Should be stored in a dry, dust-free and well-ventilated place.

(2) When stored, the circuit breaker should be in the open state.

(3) Every time the storage time exceeds half a year, the drive module needs to be powered on once and connected to the circuit breaker for switching operation.

During the life period, maintenance is free and no adjustment is required for the mechanical parts. Dust removal should be done during maintenance.

Table 3: Packing list

Attachment: Equipment use vacuum arc extinguishing chamber parameter manual

TD-17.5/1250-25(X899)

Vacuum Interupter for Circuit-Breaker

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