Unitech Electric Pte Ltd (SINGAPORE)
No. 11, Senoko Avenue, Woodlands East Industrial Estate, Singapore 758301
Telephone:(+65) 758 1111 Fax:(+65) 758 9007
Unitech Surge Arresters
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The multipole lightning arrester is mainly intended for the protection of equipment powered via a TT or TN-S network in highly exposed areas. |
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Network Identification
Protection Diagrams
The lightning arrester type is dependent on the network structure. This is distinguished by two protection modes:
| Common Mode | :protection between live conductors and earth |
| Differential Mode | :protection between live conductors (between phases and neutral). |
The recommended arrester type is dependent on the network structure.
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TT Wiring |
TN-S Wiring |
IT Wiring |
TN-C Wiring |
1-phase |
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3-phase |
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selection |
multipole lightning arrester |
single-pole lightning arrester |
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