Retrofitting of MOCB with VCB

Retrofitting of MOCB with VCB


Jyoti Limited (Switchgear Division), is an ISO 9001: 2008 certified manufacturer and supplier of an extensive assortment of switchgear. These products are highly applauded for their excellent performance, easy operation and longer functional life. The company offers now offers Retrofitting of Medium Voltage old MOCBs (minimum oil circuit breakers) with VCBs, the first in India to introduce this concept. The company has developed one-to-one as well as cassette type retrofitting solutions for circuit breakers of different makes apart from its own. It is retrofitting MOCB, VCB and SF6 breakers of other makes also. The company has successfully retrofitted VCBs in 11 kV BHEL MOCB panels for 1250, 630 and 2500 A. The company, aided by a rich experience of 65 years, is engaged in manufacturing and supplying a comprehensive plethora of switchgear. The range includes draw out units, vacuum circuit breakers (outdoor), vacuum contactors (indoor) and ring main units. It also provides retrofit (indoor MOCB panel) to its clients. These products are manufactured employing supreme quality raw material and sophisticated technology. In order to make the designing and development process easy, the company has installed the latest version of PROe Wildfire 5 and Solidworks at its R&D unit.

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Existing Panel Existing MOCB Recommended VCB
Sr.No. Type of MOCB Panel Type of MOCB Current Rating in Amp Fault Level KA Type of MOCB Current Rating in Amp Fault Level KA
1

11/6.6/3.3 KV 860/PA1

OZ2 OZ2 OZ2 630 1250 800 13.2 13.2 18.4 VK10J25 VK10M25 VK10M25 630 1250 1250 25 25 25
2

11/6.6/3.3 KV ZK4/PB2

OZ2 630 1250 18.4 18.4 VK10J25 VK10M25 630 1250 25 25
-do- OD1 630 1250 1600 25 25 25 VK10J25 VK10M25 VK10P25 630 1250 2000 25 25 25
3

11/6.6/3.3 KV PA3/PA3-1

OZ2 MT1 630 1250 800 13.2 18.4 18.4 VK10J25 VK10M25 VK10M25 630 1250 1250 25 25 25
4

11/6.6/3.3 KV PB3/PB3-M

MS1/MS2 MS3 1250 1250 1250 25 40 25 VK10M25 VK10M40 VK10M25 1250 1250 1250 25 40 25
5

11/6.6/3.3 KV PA-3/M

MT-1 MS-3 630/1250 1250/1600 25 40 VK10J25 VK10M25 VK10M40 VK10P40 630/1250 1250/2000 25 40

  • Reliable
  • Timely executed
  • Highly effective

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