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Services | Herlec Switchgear Services

Herlec Switchgear Services has extensive experience in the following services:

 

  • Installations.

  • Test of relays.

  • Ratio tests.

  • Magnetization curves.

  • Insulation tests. H.V.

  • Speed and timing tests.(circuit breakers)

  • Contact resistance.

  • Servicing Switchgear

 

Retrofits

Circuit breaker retrofits with Tavrida VCB’s - SBV4, SBV3, Hawker Siddley, AEG, Cegelec HL410, Cegelec HL420, Relay settings.

Refurbishments of HV Circuit Breakers and Panels:

 

  • We are capable of refurbishing of M.V. switchgear to the clients specification. The panels are stripped completely then sandblasted and powder coated to suit your requirements.

  • We can disassemble and reassemble most makes and models of circuit breakers and ring main units.

  • We also do repairs and maintenance on most circuit breakers.

  • Our wiring team is capable of wiring protection schemes, control panels, circuit breakers and mini sub L.V. cubicles.

  • We are capable of installing and commissioning of most makes & models of switchgear.(indoor or outdoor)

  • We also specialize in the installation and maintenance of GIS switchgear especially the Alstom WS.

  • We carry SF6 gas in stock and have vacuum pumps and fittings for most breakers.

  • SF6 work.

We have a full range of test equipment comprising of:

 

  • Breaker analyser (speed & time)

  • Secondary injection test set.

  • Primary injection test set.

  • Micro-ohm meter (Ductor) 0-100amps.

  • H.V. Tester 0-75kVac.

  • H.V. Tester 0-30kVac

  • Variac’s.

  • Variable dc power supplies.

Motor Starter/Tavrida CB

Motor Starter/Tavrida CB

Control Panel

Control Panel

Relay Settings Tavrida Retrofit

Relay Settings Tavrida Retrofit

SBV3 Tavrida Retrofit

SBV3 Tavrida Retrofit

22Kv Dogbox Breaker in for repairs

22Kv Dogbox Breaker in for repairs

Lightning damage to 22Kv Dogbox Breaker

Lightning damage to 22Kv Dogbox Breaker

Escom Circuit Breaker in for repairs

Escom Circuit Breaker in for repairs

33 Kv Ring Main Unit with breakers

33 Kv Ring Main Unit with breakers

References

 

1) Wiring, installation & commissioning off 65 x 22kV GIS panels at ASSMANG (BKM PROJECT).

 

2) Supply of 11kV refurbished switchgear to NCP.

 

3) Supply of refurbished 6,6kV switchgear to NAMPAK.

 

4) Motorising & supply of switchgear to SANDTON SQUARE.

 

5) Wiring, installation & commissioning of 20 x 33Kv GIS switchgear at IMPALA PLATS 16#.

 

6) Wiring, installation & commissioning of 8 x 33Kv GIS switchgear at SUBLIME TECH.

 

7) Installations & commissioning of Dogbox breakers for ALSTOM.

 

8) Repair and modify breakers for SABC.

 

9) Manufacture & installation in partnership with Alstom of 33kV DNF7 switchgear at RBM and LESOTHO.

 

10) Servicing of switchgear at:

 

  •  Saldhana steel.

  •  Mittal steel.

  •  Samancor Ferrochrome.

  •  Middelburg Municipality.

  •  Cape Town Municipality

  •  NCP.

  •  Nampak

  •  Xtrata SA Chrome.

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