Polymeric Surge Arrester & Disconnector

PCA Polymeric surge arresters provides active over-voltage protection that contributes directly to improved reliability of the system, reduces outages and protects expensive terminal equipment.

PCA silicone surge arresters are designed and tested to meet customer demands with reliability in offering optimum operational performance.

Proven moisture sealing technology

Non-tracking insulating silicone materials

Fully integrated single piece and void free design

Safe mode of failure

Description

The PCA series of arresters are designed to perform in the toughest environmental conditions to meet and exceed the requirements of IEC60099-4. Our gapless zinc oxide polymeric arresters have been in service since 1986 and the PCA range builds on that experience.

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Qualification Testing 
Decades of experience in the field combined with expertise in design and development lead to creating PCA Series of surge arresters. The basic construction comprises of high energy ZnO varistor assembled within an open cage design. The series has been type tested as per IEC60099-4 Standard.
  • Insulation withstand test on arrester housing
  • Residual voltage test
  • Long duration current impulse withstand test
  • Operating duty tests
  • Short-circuit tests
  • Internal partial discharge test
  • Bending moment test (Cantilever)
  • Moisture ingress test
  • Weather Ageing test
  • Power frequency voltage versus time characteristics on the arrester
Parameter
 The silicone insulating material is optimized for arrester application and following additional testing performed for qualification of silicone.
  • Tracking and erosion
  • UV testing
  • Thermal endurance
  • Dielectric testing
  • Flammability testing
  • Long term water immersion testing

 

Technical Information

Generic technical data  Unit
PCA Series Ur Rating 18 – 240 kV
Rated discharge current (8/20) 10 kA
Line discharge class 3 according to IEC 60099-4
Operating duty impulse withstand current (4/10 µs) 100 kA
Long duration current impulse (2400 µs) 640 A
1 second TOV (Uw/Ur) 1.15
High current short circuit: (pre-failing method) (Safe non-shattering failure mode) 65 kA
Energy based on Ur 7.8 kJ/kV
Mechanical data:
Cantilever (Nm) 2500 Nm
Tension (N) 75 kN
Torque (Nm) 75 Nm

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Brand

Raychem RPG

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