High Voltage (HV) Surge Arresters, 6.6kV-42kV - Pfisterer Connex

Medium Voltage MV Surge Arresters​

Pfisterer HV-Connex Surge Arresters

Sizes 4 - 72.5 kV & 5S - 145 kV

 

Pfisterer HV-Connex surge arresters make it possible to achieve the optimum surge protection design for transformers and gas-insulated switchgear (GIS). 

Pfisterer HV-Connex surge arresters for protection of metalclad switchgear and transformers which are fitted with plug-in connections in accordance with EN 50180 / 50181. 

Pfisterer HV-Connex Surge Arrester Sizes 4 & 5-S Applications

• Connecting a transformer via a cable line to the overhead line
• Connecting switchgear via a cable to the overhead line
• Connecting a switchgear via a cable to other resources
• Voltage levels up to Um = 72.5 kV or Um = 145 kV
• Max rated voltage UR = 72.5 kV or UR =145 kV 

 

Pfisterer HV-Connex Surge Arrester Sizes Features & Benefits 

• Active part constructed with no spark gaps, using metal-oxide resistors without spark gaps
• HV-Connex arresters hasve resistors with high thermal stability
• Corrosion-resistant and shock proof thanks to aluminum and fiberglass housings
• Hermetic encapsulation of the active components against environmental influences such as humidity or pollution
• Insulation of the active parts from the metallic housing by means of silicone rubber sheathing „
• Pfisterer Surge Arresters are maintenance-free, as solid insulated
• Outdoor resistant
• Any mounting position
• Plug-in
• Bursting disc with rotatable exhaust port for defined pressure relief in the event of overload 

 

Pfisterer Size 4 HV-Connex Surge Arrester Technical Data

Nominal Discharge Current	10kA, 8/20μs
Rated Short Circuit Current	40kA, 0.2s
High Current Impulse	100kA, 4/10μs
Long Duration Current Impulse	420A, 2000μs
Rated Frequency	50Hz - 60Hz
Line Discharge Class	2
Energy Absorption Capacity	4.28kJ/kV Ur
Weight	Approx. 40kg

 

Pfisterer Size 5S HV-Connex Surge Arrester Technical Data

Nominal Discharge Current	20kA, 8/20μs
Rated Short Circuit Current	40kA, 0.2s
High Current Impulse	100 kA, 4/10 μs
Long Duration Current Impulse	900A, 2800μs
Rated Frequency	50Hz - 60Hz
Line Discharge Class	4
Weight	Approx. 115kg

 

Pfisterer High Voltage Surge Arresters