The series parallel construction comprises individual
surge arrester modules rated between 30 and 45kV
interconnected by means of corona free aluminium alloy
cross arm.
Each surge arrester module is completely impervious to
the ingress of moisture and utilises the high mechanical
strength properties of the ZnO varistors bonded by
cured resin impregnated glass fibre.
The seismic performance of the 500kV arrester has been
proven in two leading test facilities. Bonneville Power
USA performed at Portland State University and NEL
East Kilbride UK.
No air gap therefore no internal ionisation Light weight compared to porcelain Ease of installation Non shattering housing Optimised voltage stress grading eliminates need to
oversize stress grading ring, therefore the compact
series parallel can be installed in tight spaces without
infringing electrical or surge safety clearances. The diameter of the series parallel design has been
calculated to reduce the radial field stress to a
minimum, even under adverse environmental
conditions.
Electrical Performance
Specification: IEC60099-4 Classification: 2PH Class 3 10kA, 3P Class 3 & 4 10/20kA, 4P Class 4 & 5 20kA and 5P Class 5 20kA High Current Performance: 100kA Energy Capability: according to IEC60099-4 (Clause 8.4.2 table 5 and 8.5.5) 2PH Class 3 7.0kJ/kV at Ur/3P Class 3 9.4kJ/kV at Ur/3P Class 4 10.8kJ/kV at Ur/4P Class 4 12.5kJ/kV at Ur/5P Class 5 16.4kJ/kV at Ur Voltage Rating: 2PH Rated Voltage from 15kV to 168 kV, 3P Rated Voltage from 60kV to 360 kV, 4P Rated Voltage from 96kV to 468 kV, 5P Rated Voltage from 288kV to 525 kV Insulation: Silicone Rubber Housing
Typical Applications
Substations Capacitor Banks DC Inter-Connections Power Transformers Cable Terminations
Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
No air gap therefore no internal ionisation
