Transformer Fuses – MV HV Fuses 12kV-24kV Transformers IEC ABB CEF-OT

Transformer Fuses - MV HV Fuses 12kV-24kV Transformers IEC ABB CEF-OT

Transformer Fuses – MV HV Fuses 12kV-24kV Transformers IEC ABB CEF-OT

ABB CEF-OT transformers fuses are current-limiting fuses which are especially suited for protecting MV-HV transformers, capacitor banks, cable feeders and overhead lines against short-circuits, 12-24kV, 20 and 31.5A.

MV-HV fuses are suitable for 11kV/12kV and up to 24kV transformer applications in accordance with IEC specification.

ABB CEF-OT transformer fuses were designed specially to be used in combination with TPC bushings and TPC II switch-disconnector, which are used in ABB TPC medium/high voltage distribution transformers.

The design of the fuse-links provides resistance to high temperatures and vacuum during transformers manufacturing process. The CEF-OT fuse can be operated whilst immersed in transformer oil at temperatures from -40ºC up to +80ºC, within indoor and outdoor installations between -40ºC and +40ºC and inside TPC bushings.

CEF-OT current limiting fuses are back-up type medium voltage fuses which limit the value of prospective short-circuit currents during the interruption process and extended the life time of nearby installed electrical equipment. CEF-OT fuses when used in combination with load break switches equipped with fuse tripping system ensures control over the full range of overload and short-circuit currents.

ABB CEF-OT Transformer Fuses

Features & Benefits

  • Low minimum rated breaking capacity
  • Low power losses
  • Low electric arc voltage
  • High breaking capacity MV-HV fuses
  • High short-circuit current limiting capacity fuses
  • Adopted for using in combination with switch disconnector (equipped with a striker)
  • Can work inside a transformer tank, immersed in transformer oil
  • Welded current path
  • Type tested according to IEC 60282-1
  • Dimensions of fuse-links are in accordance with IEC 60282-1:2005, Type II
  • Also: MV HV Surge Arresters 11kV 33kV

ABB CEF-OT Transformer Fuses – Fuse Ratings

Fuse Link Type Catalogue Number Rated Voltage (kV) Rated Current (A) Minimum Breaking Current l3 (A) Maximum Tested Short-Circuit Current l1 (kA) Rated Fuse Link Resistance at 20ºC (mΩ) Rated Power Losses In Air (W) Striker Force at a Distance of 4mm From End Cap (N)
CEF-OT TPC1 1YMB531041M0004 12 / 24kV 20A 80A 31.5kA (at 12kV) / 16kA (at 24kV) 115.5mΩ 70W 130N
CEF-OT TPC1 1YMB531041M0006 12 / 24kV 31.5A 80A 31.5kA (at 12kV) / 16kA (at 24kV) 69.2mΩ 105W 130N
CEF-OT TPC2 1YMB531041M0014 12 / 24kV 20A 80A 31.5kA (at 12kV) / 16kA (at 24kV) 115.5mΩ 70W 130N
CEF-OT TPC2 1YMB531041M0016 12 / 24kV 31.5A 80A 31.5kA (at 12kV) / 16kA (at 24kV) 69.2mΩ 105W 130N

 

Transformer Fuses – MV HV Fuses 12kV-24kV Transformers IEC ABB CEF-OT TPC1

ABB CEF-OT TPC1 Transformer Fuses – Dimensions

Transformer Fuses – MV HV Fuses 12kV-24kV Transformers IEC ABB CEF-OT TPC2

ABB CEF-OT TPC2 Transformer Fuses – Dimensions

MV HV Transformer Switchgear Cable Connectors & Terminations

Thorne & Derrick also distribute an extensive range of MV-HV Joints, Connectors & Terminations for installing medium/high voltage power cables onto gas insulated switchgear networks up to 33kV – this includes outer cone (Nexans Euromold) and inner cone (Pfisterer CONNEX) type cable plug and connectors. MV-HV fuses are available for transformer, switchgear, motor circuit and capacitor protection.

Cable Connectors Terminations

ABB – GIS Gas Insulated Switchgear For MV HV Medium/High Voltage Power Systems, 11kV/33kV & EHV