Page 191 - Engine IQflip'21

Medium voltage generators > 1000V

Overvoltage protection and junction box

Technical instruction no: 1100-0114 (Installation of electrical equipment for INNIO Jenbacher generator sets)

Generator transient overvoltage protection:

High voltage transient surges caused by switching devices, lightning strikes
on overhead cables etc., could damage the generator windings and measuring

equipment
→ Therefore surge suppression devices must be installed

Air circuit breaker 50 - 60 Hz
closed Normal
operation
Air circuit breaker installation without proper surge protection
Open
Switching off
generator No warranty for the
Air circuit breaker Open
generator
Clamping the
spike
S
A

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