POWER ELECTRONICS
40
CONFIGURATION, LOW VOLTAGE TRIAL AND COMMISSIONING
• 300kΩ resistor should be connected in each phase, making an electrical bridge in the
medium voltage resistors, in the input of the first thyristors (terminal block JP2, terminal
K) and in the phase output (terminal block JP2, terminal RF).
CAUTION
ure that IN EACH PHASE has been connected a 300k
Otherwise, the equipment can be damaged.
Then the connections will be detailed for an only phase. The same steps should be done in the
three phases.
Figure 8.5 Connection of the 300kΩ resistor in the trigger boards per phase in the medium
voltage soft starters of 4160V or lower rated voltage
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