Catalogs >
MITSUBISHI ELECTRIC >
Retrofit Vacuum Circuit Breakers Type VV

Retrofit Vacuum Circuit Breakers Type VV
6Pages

Catalog excerpts

Retrofit Vacuum Circuit Breakers Type VV - 1

Eco Changes is the Mitsubishi Electric Group's environmental statement, and expresses the Group's stance on environmental management. Through a wide range of businesses, we are helping contribute to the realization of a sustainable society. Safety Warning To ensure proper use of the products listed in this catalog, please be sure to read the instruction manual prior to use. MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN G-199-2-C8933-AHQ1203 Printed in Japan (MDOC) Specifications are subject to change without notice. MITSUBISHI Changes for the Better VACUUM CIRCUIT BREAKER (RETROFIT) Retrofit VCBs for Replacement of Existing VCBs

Open the catalog to page 1

Retrofit Vacuum Circuit Breakers Type VV - 2

We recommend to replace the aged VCBs in order to ensure the safe and reliable operation of your switchgear. 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. Increase in the number of accidents Retrofit VCBs will improve reliability and increase economical efficiency. Use of...

Open the catalog to page 2

Retrofit Vacuum Circuit Breakers Type VV - 3

High Reliability & Saving Maintenance Time The VV Retrofit VCB complies with the international standard IEC 60056. VV-10VPR-25M VV-10VPR-25BB Motorised stored energy spring mechanism Retrofit VCB type Closing operation mechanism Rated voltage Rated current Rated frequency Rated short-circuit breaking current Rated short-circuit making current Rated short-time withstand current Power frequency withstand voltage Lightning impulse withstand voltage Rated breaking time Rated operating sequence Weight Improved insulated frame (BMC:Bulk Moulded Compound) Superior anti-tracking characteristics &...

Open the catalog to page 3

Retrofit Vacuum Circuit Breakers Type VV - 4

Maintenance free Maintenance free for 15 years or more. (Maintenance interval may be changed depending on enviorment condition) Mitsubishi Grease is fluoride-based. There was no evidence of oxidation during tests on Mitsubishi grease. It has also been confirmed that there is no increase in friction after these tests were completed. The coefficient of friction remains small and regular under both low and high temperature conditions unlike other types of grease. Simple & Safe Operation Simple Operation The Retrofit VCB can be drawn-out or inserted in a single levering action while many...

Open the catalog to page 4

Retrofit Vacuum Circuit Breakers Type VV - 5

Complete Interchangeability Operating & Control Voltage / Current Operation and control voltage fluctuation range Standard Classification Closing operation/control voltage Tripping control voltage Closing and tripping control current vs. current-flow time (see Fig. 1) VCB type name Control voltage (V) Current (A), Time (s) Closing Tripping NOTE : Other than DC 100V control source are available. Motor-operation control current vs. current-flow time (see Fig. 2) VCB type name Control voltage (V) Current (A), Time (s) 1.8 NOTE : Other than DC 100V control source are available. (Surge current)...

Open the catalog to page 5

Retrofit Vacuum Circuit Breakers Type VV - 6

Information for Replacement Item Retrofit VCB type Type 10-VPR-25M 1250 A (Typical) Operating mechanism Front plate Draw-out mechanism Vacuum Switch tube Primary Junction Draw-out handle Manual charging handle Contact exhaustion limit gauge One set of the above will be provided for each 5 VCBs. Additional sets can be provided, on request. Standard accessories An interlock plate will be fitted to the floor of the CB compartment. Interlock plate NOTE : Customers can perform the replacement at site as detailed instruction manuals are provided. Training by MITSUBISHI ELECTRIC staff is available...

Open the catalog to page 6