ABB MWK MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor & Outdoor

ABB MWK MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor & Outdoor

ABB MWK MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor & Outdoor

ABB MWK surge arresters are used for the short-circuit protection of medium voltage and high voltage electrical equipment and cables against overvoltages caused by lightning, atmospheric discharges and switching conditions up to 52kV.

MWK surge arrester is suitable for both indoor and outdoor use – type ABB MWD is intended for use indoors only. ABB MWK surge arresters are designed with metal-oxide (MO) resistors without spark gaps molded in silicone housing and tested according to IEC 60099-4 and meeting the requirements of ANSI/IEEE C62.11.

  • IEC 60099-4:2014  – Part 4: Metal-oxide Surge Arresters Without Gaps For a.c. Systems
  • ANSI/IEEE C62.11 IEEE Standard – Metal-Oxide Surge Arresters AC Power Circuits (>1 kV)

ABB MWK surge arresters are for use with MV-HV cables, transformers, overhead lines, rotating machines, capacitors, capacitor banks, cable sheaths, switchgear, switchboard panels and other medium/high voltage equipment – T&D distribute cable joints, terminations and connectors to support the construction of electrical networks, substations and overhead lines for 11kV, 33kV and up to 66kV.

Surge arresters should be installed as close as possible to the medium/high voltage electrical equipment to be protected within the protective distance with sheds pointing downwards – minimum permissible distances between the surge arresters and the earth must be observed.

ABB MWK MV HV Surge Arrester

Technical Specification

Nominal Discharge Current /n 8/20μs 10kA Peak
Line Discharge Class (LD) 2
High Current Impulse /hc 4/10μs 100kA Peak
Long Duration Current Impulse 550A / 2000μs
Short Circuit Rating /s 50 Hz 20kA rms for 0.2s
Classification According To IEEE (ANSI) C62.11 Intermediate
Torque Moment 50nm
Tensile Strength Axial 1200N
Short Term Load SSL Horizontal To Axis 153Nm
Long Term Load SLL Horizontal To Axis 88Nm
Ambient Air Temperature -60 to +40ºC
Altitude Up to 1800m
Frequency of System Voltage 16.7/50/60Hz
Weather Ageing Test Tested according to test series A (1,000h salt fog)

 

ABB MWK MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor & Outdoor - Dimensions

ABB MWK MV HV Surge Arrester – Dimensions

ABB Surge Arresters Overview

Should you require assistance for the specification or supply of MV-HV surge arresters for 11kV, 33kV and up to 52kV voltages please do not hesitate to contact us.

Surge Arrester Type

ABB Surge Arrester POLIM-D

POLIM-D

ABB Surge Arrester POLIM-D..PI-2 PI-3

POLIM-D..PI-2 PI-3

ABB Surge Arrester POLIM-K

POLIM-K

ABB Surge Arrester MWD

MWD

ABB Surge Arrester MWK

MWK

POLIM-C..N

POLIM-C..N

POLIM-C..LB

POLIM-C..LB

POLIM-I..N

POLIM-I..N

POLIM-S..N

POLIM-S..N

POLIM-R..N

POLIM-R..N

POLIM-H..N

POLIM-H..N

Technical Data
System Voltage Us ≤ 52kV ≤ 52kV ≤ 52kV ≤ 52kV ≤ 52kV ≤ 7.5kV ≤ 5kV ≤ 72kV ≤ 72kV ≤ 1kV ≤ 72kV
Continuous Operating Voltage Uc ≤ 44kV ≤ 42kV ≤ 44kV ≤ 44kV ≤ 44kV  ≤ 7.5kV ≤ 4.8kV ≤ 56kV ≤ 56kV ≤ 1kV ≤ 58kV
Nominal Discharge Current ln 10kA 10kA 10kA 10kA 10kA 10kA 10kA 10kA 10kA 20kA 20kA
High Current Impulse 100kA 65kA 100kA 100kA 100kA 100kA 100kA 100kA 100kA 100kA 100kA
IEC Line Discharge Class 1 1 2 2 2  2 2 2 3 4 4
Application Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor Indoor & Outdoor Indoor & Outdoor Indoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor Indoor & Outdoor
Medium Voltage & High Voltage Applications – Recommended Overvoltage Protection 11kV 33kV 52kV
Transformers Yes Yes Yes Yes Yes  Yes  – Yes Yes Yes
Overhead Lines Yes Yes Yes Yes Yes Yes
Cables Yes Yes Yes Yes Yes Yes
Rotating Machines Yes Yes Yes Yes Yes Yes
Capacitors & Capacitor Banks Yes Yes Yes Yes Yes Yes Yes
Cable Sheath Protection HV Cables Yes Yes Yes Yes Yes
Switchgear & Switching Cubicles Yes
Metal-Encapsulated Switchgear Yes
Inductances, Reactors, PLC Line Traps Yes
Transformers Of Arc Furnace Yes Yes
Further Medium Voltage Apparatuses Yes Yes Yes Yes Yes Yes Yes  Yes Yes
Component of Secondary Equipment  Yes Yes
Power Electronics Yes Yes

Surge Arrester Medium High Voltage MV HV 11kV 33kV 66kV

ABB Medium & High Voltage Products – complete range of MV-HV surge arresters for overvoltage protection of substations and overhead line distribution networks

Earthing Surge Arresters

Installers must observe national regulations and the requirements of the system owner/utility. ABB MWK surge arresters should be connected to the system ground via the shortest path – all contact surfaces should be cleaned and lubricated with acid-free contact grease.

Observe recommended minimum diameters for ABB MWK arresters:

  • Copper Diameter 20mm
  • Aluminium Diameter 40mm

Commissioning MV-HV Medium & High Voltage Surge Arresters

Due to the risk of electric shock only authorised personnel should work on ABB MWK surge arresters and observe BS EN 50110-1:2013 Operation of Electrical Installations – the MV-HV power system should be disconnected from the power supply, de-energised and grounded using portable short-circuit earthing kits for either substation or overhead line applications. If live-working is required and unavoidable around electrical equipment a calculation of arc risk should be sanctioned and appropriate arc flash protection clothing worn.

Arc Flash Clothing Protection PPE

Arc Flash Clothing | Protection For Workers on LV 11kV 33kV 52kV Electricity Substations, Switchgear, Cables & Lines