Lineup
Medium-voltage Switchgear
Retrofit Vacuum Circuit Breakers Type VV
Retrofit VCBs* for Replacement of Existing VCBs
Type: VV-10-VPR-25M, VV-10-VPR-25BB
*VCB : Vacuum Circuit Breaker
Retrofitting VCB for discontinued VCB
Manufacturing of VCB type 10-VPR-25M & 10-VPR-25B(B) ceased in 1983, as well as the supply of replacement parts which also was ceased in 2000. Since those VCBs cannot be supplied anymore, We recommend to replace the aged VCBs with our compatible new VCBs (Retrofit VCB) in order to extend equipment life and ensure the safe and reliable operation of your switchgear.
Features of Retrofit VCB
High reliability
- The highly reliable BH-2 operating mechanism is incorporated in the Retrofit VCB.
- This operating mechanism is used in Mitsubishi’s latest VCBs.
Saving maintenance time
- Short maintenance time: less moving parts yields a shorter working time.
- 15 years maintenance-free BH-2 mechanism.
Simple & Safe Operation
- The Retrofit VCB can be easily drawn-out or inserted by a single levering action.
Full compatibility
- Wiring modification of control circuit is not required. Only an interlock plate must be installed to the floor of the VCB compartment.
Ratings
Retrofit VCB Type | VV-10VPR-25M, VV-10VPR-25BB | |
---|---|---|
Closing operation mechanism | Motorized stored energy spring mechanism | |
Rated voltage (kV) | 11(13.8) | |
Rated current (A) | 630, 1250 | 1600, 2000 |
Rated frequency (Hz) | 50/60 | |
Rated short-circuit breaking current (kA) | 20 / 25 | |
Rated short-circuit making current (kA) | 50 / 62.5 | |
Rated short-time withstand current (kA) | 20 / 25 | |
Rated breaking time (cycles) | 3 | |
Power frequency withstand voltage (kV) | 28(36) | |
Lightning impulse withstand voltage (kV) | 75(95) | |
Rated operating sequence | 0-1min.-C0-3min.-CO C0-15sec.-CO | |
Weight (kg) | 130 | 140 |
Type of existing VCB | 10-VPR-25M, 10-VPR-25B(B) |
- NOTE:Contact MITSUBISHI ELECTRIC through our distributor, if the application of ANSI standard is required.
Outline and Dimensions
It needs some modification for existing Switchgear to apply the Retrofit VCB.
If consider using this retrofit VCB, please contact us. In that case, please inform the serial number of the existing VCB and existing Switchgear.