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2.
Introduction of Shihlin Inverter
Introduction of Inverter
2.6 Mini Jumper instruction
Mai
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power isolated from earth:
1.
If the inverter is supplied with a non-gronded power supply (IT power), the Mini jumper
must be cut off to prevent circuit damage (according to IEC61800-3) and reduce earth
leakage current.
2.
Do not cut off the Mini jumper if the inverter has a build-in filter. This time earth leakage
current is increased.
3.
If the earth leakage current is overlarge, we can cut off the Mini jumper. This time filtering
effect will be reduced.
The Mini jumper is shown as follows:
==== Caution: ==========================================================
1. After applying power to the inverter, do not cut off the Mini jumper. Therefore, please make sure
that main power has been switched off before cutting off the Mini jumper.
2. The gap discharge may occur when transient voltage is high than 1000V. Besides, electro-magnetic
compatibility of the inverter will be lower after cutting the Mini jumper.
3. Do not cut the Mini jumper when main power is grounded. To prevent drive damage, the Mini
jumper shall be cut off if the inverter is installed on an ungrounded power system or a high
resistance-grounded (over 30 ohms) power system or a corner grounded TN system.
4. The Mini jumper cannot be cut when Hi-pot tests are performed.
5. Only the Mini jumper in connection with SF-020-37~55W or SF-040-30~160kW.
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