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Sergilec Services

SERGILEC

Sergy Petushkov

Herlec Switchgear Services and Sergy Petushkov (formally from TAVRIDA SA) have formed a partnership. The new company is called SERGILEC.

 

Sergilec specializes in the manufacture, installation, servicing and commissioning of retrofit solutions.

Among Circuit Breakers will be the GEC AG16, AGVB and the REYROLLE  LMT ,LMS,LMT. All retrofits will  incorporate the TAVRIDA range of vacuum breakers.

 

Herlec Switchgear  has been building retrofits since 2007 and Sergy has been involved in the design of the retrofits. This makes the partnership logical. Please see product guides for above circuit breakers.

Indoor Switchgear Module

 

The indoor switching module and control switching module has been mounted onto LMT / LMR / LMS  switchgear circuit breaker carriage by means of retrofit kit. Retrofitted circuit breaker is intended to be used instead of original Bulk oil circuit breaker. Usage of above components allows the switchgear to acquire new characteristics. With minimum installation expense, it guarantees:

  • Long Mechanical and interrupting life;

  • Fast autoreclosing capability;

  • Easy adaptation to any signalling interface;

  • Low power consumption;

  • High safety level for all operations;

  • No maintenance of switching modules required during its  entire lifetime;

  • Remote switching capability.

Parts description

 

1. Circuit Breaker carriage

2. LV Plug

3. Locking mechanism

4. Control Box

5. Controller Signalling and indication

6. Racking Mechanism

7. Operational counter

8. Main contact position indicator 

9. Manual trip

10. Electrical trip with padlocking function 

11. Electrical Close with padlocking function

12.  Primary contacts 

13.  Terminals

14.  Vacuum circuit breaker

RCB15 LD6 LMT.

A Retrofit Solution for Reyrolle LMT, LMS, LMR Switchgear 12KV 20KA 630A 

BULK OIL CIRCUIT BREAKERS

 

Bulk oil circuit breakers for Reyrolle type LMT switchgear are widely used in former distribution boards around the world. Meanwhile many of these are nearing the end of their useful lifetime. Their reliability is decreasing, the maintenance effort is increasing and they become a safety risk.

 

Sergilec offers a retrofit solution for this type of circuit breaker. The existing truck will be completely disassembled, powder coated and reassembled using new switching components and contact systems. The interlocking mechanism which prevents incorrect operation and withdrawel of the circuit breaker are retained. Electro-mechanical mechanisms are added tp enhance the safe operation of the unit:

 

  • The circuit breaker can be closed only in the following positions:

  •  Fully lowered ( Isolated )

  • Fully Raised ( Service )

  • The circuit breaker can be withdraw from or inserted into the fixed housing only at the “Fully lowered” position.

  • Connection and disconnection of the secondary plug is possible only when circuit breaker is in “fully Lowered” position.

  • If required, the circuit breaker racking equipment and its manual / electrical operating pushbuttons can be padlocked in any position.

  • If interlocking handle is in “Free” position or ISM is in intermediate position additional electrical interlocking prevents closing of ISM.

 

The heart of the retrofit solution is Tavrida Electric’s unique vacuum circuit breaker, ISM. All switching elements are assembled axially symmetrical. The mechanical movements are direct and linear. Each pole is operated by an individual magnetic actuator. All three actuators are mounted in a steel frame and are mechanically linked by a synchronizing shaft.

 

This innovative circuit breaker design completely avoids failure of critical components like:

 

  . Tripping coils                 . Spring charge motors

  . Mechanical latching       . Gears,chains, bearings, levers etc.

200.000 CO-cycles with rated current can be performed without adjusting or replacing any parts of the breaker. The circuit breaker module is maintenance free over the total mechanical life expectancy of 25 years.

indoor switching module
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