Euromold 156SA Surge Arrester 11kV 24kV
Euromold 156SA is a surge arrester (11kV-24kV) specified to protect MV-HV cables terminated into substations and connecting medium/high voltage cables in the following voltage classes:
- 6/10 (12kV)
- 6.35/11 (12kV)
- 8.7/15 (17.5kV)
- 12/20 (24kV)
- 12.7/22 (24kV)
Euromold 156SA surge arrester can be supplied with straight connectors (152SR), straight plug (151SP) and plug-in type epoxy bushings – all suitable for use with Interface A type bushings on SF6 gas-insulated switchgear.
156A surge arrester designed to protect 11kV/12kV and 24kV class components, including transformers, equipment, cable and accessories from high voltage surges resulting from lightning or switching.
This surge arrester is a metal oxide varistor surge arrester in an elbow configuration that is tested for AC withstand and partial discharge prior to leaving the factory.
Connector accessories include: dead-end receptacle, dead-end plug, stand-off plug and earthing plug for type A interfaces.
- Manufacturer – Nexans Euromold
- MV HV Equipment Surge Arrester – Interface A
- Nominal Discharge Current – 5kA
- Voltage Classes – 12kV 24kV Maximum
- Surge Arrester Suits – 11kV 12kV 24kV Polymeric XLPE EPR Cables
- High Current Impulse Withstand – 40kA
- Applications – MV HV Switchgear, Transformers, Motors
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EUROMOLD 156SA Specification
Euromold 156SA Surge Arrester – Design
Surge arrester comprising:
Surge Arresters MV HV
- Bail restraint
- Conductive EPDM insert
- Type A – 250 A interface as described by CENELEC EN 50180 and 50181
- Pin contact
- Contact disc
- Copper shunt
- Metal oxide valve elements
- Aluminium spacer
- Steel cap
- Earth connection
- Insulating EPDM layer moulded between the insert and the jacket
- Conductive EPDM jacket
11kV 24kV Surge Arresters
To order the correct surge arrester for 11kV and 24kV power distribution systems please refer to the information below. Surge arresters provide lightning protection for MV-HV power systems installed within gas insulated substations operating at 11kV-24kV.
SELECTION TABLE FOR 11kv 24kv surge arresters
| Euromold Surge arrester |
Nominal discharge current |
Rated voltage Ur |
Max continuous operating voltage |
Steep current residual voltage @ 5 kA |
Lightning current residual voltage @ 5 kA |
High current impulse withstand |
| type | In (kA) | (kV) | Uc (kV) | [1/20 µs] (kV) | [8/20 µs] (kV) | (kA) |
| 156SA-12 | 5 | 15 | 12.5 | 62.5 | 54.5 | 40 |
| 156SA-15 | 5 | 19 | 15.5 | 77.0 | 69.0 | 40 |
| 156SA-18 | 5 | 22 | 18.0 | 87.0 | 79.0 | 40 |
| 156SA-21 | 5 | 26 | 21.0 | 101.5 | 93.5 | 40 |
| 156SA-24 | 5 | 30 | 24.5 | 116.5 | 108.5 | 40 |
Euromold 156SA Surge Arrester – Typical Application & Dimensions
Why Install Surge Arresters?
Surge arresters provide primary circuit protection to MV-HV cable and power systems against high voltage surges caused by atmospheric (lightning) and switching over voltages. Nexans medium and MV high voltage HV surge arresters protect substation switchgear (both air and SF6 gas insulated type), transformers, cables, overhead transmission lines and capacitors. Protection levels include 6.6kV, 11kV and 33kV (up to 42kV) – call to discuss your requirements.
Euromold MV HV | Cable Terminations, Connectors, Elbows & Joints
Euromold | Connect | Joint | Terminate MV HV Cables – view our complete range of HV Joints & Terminations in heat shrink, cold shrink, push-on and plug-in versions.
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