Pfisterer CONNEX Surge Arresters

Pfisterer CONNEX Surge Arresters

CONNEX Surge Arresters | MV Medium Voltage HV High Voltage 11kV 33kV 66kV

Thorne & Derrick | Distributed from Stock | Approved Supplier | UK & Export Sales

CONNEX

Surge Arresters

Pfisterer CONNEX surge arresters provide medium/high voltage protection to metal-enclosed switchgear and transformers equipped with plug-in type bushings according to CENELEC EN 50180 / 50181 – available to suit size 1, 2 or 3 size requirements.

Pluggable 10kA type surge arresters are according to DIN VDE 0675 Part 4 and IEC99-4 – suitable for inner-cone plug-in cable termination for use with gas insulated switchgear according to EN50180/EN50181.

  • Entirely metal-enclosed, fully insulated and touch-proof surge arresters
  • No arc base – free from arcing and touchproof 
  • High short-circuit strength for MV-HV electrical protection 
  • Maintenance free MV-HV surge arresters
  • Outdoor and offshore installation with IP66 ingress protection
  • Optical indication of surges

Medium & High Voltages MV HV

Thorne & Derrick distribute Pfisterer CONNEX Surge Arresters to provide overload and lightning protection to gas insulated switchgears/transformers (GIS) and high voltage power cable systems – we provide competitive prices and technical support for surge arresters from extensive stocks to UK and international destinations.

  • Ur Rated Voltage
  • Uc Maximum Continuous Operating Voltage (MCOV)
  • Type of Neutral Point
  • Insulated or Compensated Uc = Umax
  • Solidly Earthed Ur = Umax
  • Line Discharge Class – Class 1 Surge Arrester
  • Energy Absorption Capacity – 2 kJ/kVBem.
  • Rated Discharge Surge Current – 10kA, 8/20 us
  • High Peak Current – 65kA, 4/10 us
  • Long Wave Peak Current – 250A 2 ms
  • Short Circuit Withstand Current – 16kA 0.2s

Surge Arresters

The following table enables the selection of the correct Pfisterer CONNEX surge arrester – contact us for technical or specification support:

Ur (kV)Uc (kV)Size 1 ArresterSize 2 ArresterSize 3 ArresterMax. residual voltage Ures with 10kA
Pfisterer CONNEX Surge Arrester – Part Number 
7.56.0827 513-075827 523-075827 537-07522
9.07.0827 513-090827 523-090827 537-09026
12.510.0827 513-125827 523-125827 537-12537
15.012.0827 513-150827 523-150827 537-15044
17.514.0827 513-175827 523-175827 537-17551
19.015.0827 513-190827 523-190827 537-19056
21.517.0827 513-215827 523-215827 537-21563
24.019.0827 513-240827 523-240827 537-24070
30.024.0827 513-300827 523-300827 537-30087
36.029.0827 513-360827 523-360827 537-360105
45.036.0827 523-450827 537-450131
51.040.8827 523-510827 537-510147
52.542.0827 523-525827 537-525152

Surge Arresters

Also: Pfisterer CONNEX Bushings

Pfisterer Surge ArrestersSizeRated Voltage Ur
Ur (kV)
Max. Continuous Rating Uc
Uc (kV)
827 513 07517.56
827 513 090197
827 513 125112.510
827 513 15011512
827 513 175117.514
827 513 19011915
827 513 215121.517
827 513 24012419
827 513 30013024
827 513 36013629
827 523 07527.56
827 523 090297
827 523 125212.510
827 523 15021512
827 523 175217.514
827 523 19021915
827 523 215221.517
827 523 24022419
827 523 30023024
827 523 36023629
827 527 45024536
827 527 51025140.8
827 527 525252.542
827 537 07537.56
827 537 091397
827 537 125312.510
827 537 15031512
827 537 175317.514
827 537 19031915
827 537 215321.517
827 537 24032419
827 537 30033024
827 537 36033629
827 539 45034536
827 539 51035140.8
827 539 525352.542

 

Surge Arresters

Above: Pfisterer CONNEX high voltage surge arrester, the only pluggable and contact-proof overvoltage protection up to 145kV available for metal-encapsulated switchgear and transformers.

Pfisterer CONNEX Separable Connectors

Pfisterer CONNEX – medium/high voltage electrical substation equipment for gas insulated swithgear (GIS) and power transformers, including inner cone plug cable connectors and terminations, 33kV-52kV

 ➡ Should you require customer service or technical support please contact us – view the full range of Pfisterer Surge Arresters below.

Data Sheets