Pfisterer CONNEX Surge Arresters

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Pfisterer CONNEX Surge Arresters

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

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.

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

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 Arrester Size 2 Arrester Size 3 Arrester Max. residual voltage Ures with 10kA
Pfisterer CONNEX Surge Arrester – Part Number 
7.5 6.0 827 513-075 827 523-075 827 537-075 22
9.0 7.0 827 513-090 827 523-090 827 537-090 26
12.5 10.0 827 513-125 827 523-125 827 537-125 37
15.0 12.0 827 513-150 827 523-150 827 537-150 44
17.5 14.0 827 513-175 827 523-175 827 537-175 51
19.0 15.0 827 513-190 827 523-190 827 537-190 56
21.5 17.0 827 513-215 827 523-215 827 537-215 63
24.0 19.0 827 513-240 827 523-240 827 537-240 70
30.0 24.0 827 513-300 827 523-300 827 537-300 87
36.0 29.0 827 513-360 827 523-360 827 537-360 105
45.0 36.0 827 523-450 827 537-450 131
51.0 40.8 827 523-510 827 537-510 147
52.5 42.0 827 523-525 827 537-525 152

Surge Arresters

Also: Pfisterer CONNEX Bushings

Pfisterer Surge Arresters Size Rated Voltage Ur
Ur (kV)
Max. Continuous Rating Uc
Uc (kV)
827 513 075 1 7.5 6
827 513 090 1 9 7
827 513 125 1 12.5 10
827 513 150 1 15 12
827 513 175 1 17.5 14
827 513 190 1 19 15
827 513 215 1 21.5 17
827 513 240 1 24 19
827 513 300 1 30 24
827 513 360 1 36 29
827 523 075 2 7.5 6
827 523 090 2 9 7
827 523 125 2 12.5 10
827 523 150 2 15 12
827 523 175 2 17.5 14
827 523 190 2 19 15
827 523 215 2 21.5 17
827 523 240 2 24 19
827 523 300 2 30 24
827 523 360 2 36 29
827 527 450 2 45 36
827 527 510 2 51 40.8
827 527 525 2 52.5 42
827 537 075 3 7.5 6
827 537 091 3 9 7
827 537 125 3 12.5 10
827 537 150 3 15 12
827 537 175 3 17.5 14
827 537 190 3 19 15
827 537 215 3 21.5 17
827 537 240 3 24 19
827 537 300 3 30 24
827 537 360 3 36 29
827 539 450 3 45 36
827 539 510 3 51 40.8
827 539 525 3 52.5 42

 

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.