Polymeric Surge Arrester & Disconnector - Image 2

Polymeric Surge Arrester & Disconnector

Category: Raychem RPG Tag: polymeric-surge-arrester-disconnector

Specifications

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

Description
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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

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.