ABB MWD MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor
ABB MWD MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV Indoor
ABB MWD 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.
MWD surge arrester is intended for use indoors only – type ABB MWK is intended for use both outdoors and indoors. ABB MWD 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 MWD surge arresters are for use with MV-HV cables, transformers, 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 MWD 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 |
ABB MWD 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 |
 POLIM-D |
 POLIM-D..PI-2 PI-3 |
 POLIM-K |
 MWD |
 MWK |
 POLIM-C..N |
 POLIM-C..LB |
 POLIM-I..N |
 POLIM-S..N |
 POLIM-R..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 | – |
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 MWD 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 MWD 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 MWD 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 For Workers on LV 11kV 33kV 52kV Electricity Substations, Switchgear, Cables & Lines
ABB MWD MV HV Surge Arrester Line Discharge Class 2 AC Systems 52kV IndoorDownload
