Auto
reclosers
The ACR series of Automatic Circuit Recloser for 6/15 kV, 22/27 kV and 33/40 kV is clearly the most advanced and safe product of its kind on today's market. It is built on the well proven OVX, Vacuum circuit breaker module and the FTU Recloser controller.
- Non enclosed switch for extra safety
- Integrated air break switch for personal safety
- Solid insulated. No harmful SF6 gas
- Operation On and Off with full load without electric power
- Core balance transformer for detecting low earth faults
- Frame of "Marine grade" premium stainless steel
MODULE OFVACUUM INTERRUPTER
- High current vacuum breaker element, AMF type
- 630 or 1250A versions
- 20 or 25kA fault current in max 3 sec
- Bushings of epoxy with silicone surface
- Integrated and synchronized ABI
- Integrated phase current transformers
- Integrated core balance CT
- Frame made of 5 and 4mm SIS 2333 stainless steel
- Electrical circuit made of copper
- No electro chemical corrossion
- Integrated heater
- 3 Phase CT with low earth faults (400mA) capacity
- Manual manoeuver of both vacuum interrupter and air break switch
- Design specification IEC 62271-111
- Marking specification IEEE std C37.60
OVX 240 24 kVELECTRICAL DIAGRAM
OVX 240 22-27kVTECHNICAL DATA
| Description | ovx240 | ovx240 | |
| Rated maximum voltage | 24 kV | 24 kV | |
| Rated basic impulse level, P>P | 145 kV | 145 kV | |
| Rated basic impulse level, P>E | 125 kV | 125 kV | |
| Power frequency withstand, Dry | 60 kV | 60 kV | |
| Power frequency withstand, Wet | 50 kV | 50 kV | |
| Description | 24 kV | 24 kV | |
| Rated continuous current | 630 A | 1250 A | |
| Rated fault making current | 50 kA | 63 kA | |
| Rated fault breaking current | 20 kA | 20 kA | |
| Cable charging current | 20 A | 40 A | |
| Line charging current | 5 A | 10 A | |
| Rated fault duration time | 3 s | 3 s | |
| Contact resistance, VCB | < 35 µΩ | < 35 µΩ | |
| Contact resistance,ABI | < 65 µΩ | < 65 µΩ | |
| Network frequency | 50/60 Hz | 50/60 Hz | |
| Description | Winding 1 | Winding 2 | Winding 3 |
| Phase CT type 1 | 200/1 | 400/1 | 600/1 |
| Core balance CT | 20/1 | ||
| Description | |||
| Design min mechanical/electrical | 20.000 | 20.000 | |
| Mass (weight) without air break switch - kg (lbs) | 90 (198) | 90 (198) | |
| Mass (weight) with air break switch - kg (lbs) | 120 (264) | 120 (264) | |
| Description | |||
| Ambient temperature C (F) | -45 - +70 | -45 - +70 | |
| Humidity | 100% at 25 C | 100% at 25 C | |
| Bushing type | Epoxy core with silicone surface | ||
| Creep distance to group | 800 mm | 800 mm | |
| Max installation altitude at rated BIL | 3000 M | 3000 M | |
| Description | |||
| Rated operation voltage | 48 VDC | 24 VDC | |
| Rated power | 40 W | 40 W | |
| Design specification | IEC 62271-111 | ||
| Marking specification | IEEE std C37.60 | ||
| Operation sequence, no charge | 25 ms trip - 50 ms close - 25 ms trip | ||
New Auto recloser Application
Hughes Protection Relay App is an unique tool for a modern Electrical Utility Linesman. Operation of the breaker, change of relay parameters etc.