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

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

Fuses

MV HV | Medium & High Voltage Electrical Circuit & Equipment Protection

Distribution Transformers Protection up to 24kV | Oil-tight Fuses

Rated Voltages | 10 kV – 24 kV
Rated Currents | 20 A – 31.5 A

ABB CEF-OT transformer 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, manufactured by ABB, 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. ABB 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.

Product Category: MV HV Medium & High Voltage Fuses
Fuse Type: ABB CEF-OT
Application: Transformers (MV Medium Voltage)
Voltage: 12kV 24kV
Specification: IEC
See Also Medium Voltage Products | Surge Arresters | Bushings | Electrical Safety

ABB CEF-OT Fuses | Contact us for Price | Stock | Technical Support | ABB MV Electrical Products

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 medium voltage 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
Also: MV HV Surge Arresters 11kV 33kV

➡ IEC 60282-1:2020 applies to all types of high-voltage current-limiting fuses designed for use outdoors or indoors on alternating current systems of 50 Hz and 60 Hz and of rated voltages exceeding 1000V.

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

Back-up, current limiting fuse-link | mEDIUM vOLTAGE

ABB CEF-OT fuse-links protect MV transformers, capacitors banks, cable feeders and overhead lines against short-circuit consequences. Fuse-links were designed specially to be used in combination with TPC bushing and TPC II switch-disconnector, which are used in ABB’s TPC distribution transformers. The design of medium voltage fuse-links provides resistance to high temperatures and vacuum during transformers manufacturing process.

ABB CEF-OT fuse-links can be operated under the following conditions:

MV fuses immersed in transformer oil, at temperatures from -40°C to +80°C
In outdoor and indoor installations, at temperatures from -40°C to +40°C
Inside a TPC bushing.

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.