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Electrical Installation and Wiring
For the following applications additional line reactors are strongly recommended:
• high short circuit currents
• compensation-plants without a coil
• asynchronous motors which are responsible for a voltage drop >20% of the line voltage
EMC Summary
• Install proper grounds according to local codes and regulations
• Do not install the power wires in parallel to control wires
• Use screened control cables
• Connect both ends of the motor wire screen to ground
• Connect only one end of the control wire screen to ground
• Motor wires should be as short as possible
8.3 Recommended Wire Types
For maximum 40º C ambient temperature, recommend use of 75º C wire of the following types: RHW,
THHW, THW, THWN, XHHW, USE, ZW.
8.4 Wiring and Connections
Remove the screws holding the top cover of the HYDROVAR.
Lift off the top cover. The following parts can be seen on a HYDROVAR Master / Single Drive:
1 Ph 2, 3 HP 3 Ph 3, 5 HP 3 Ph 7.5, 10, 15 HP
(A) Power supply (B) Motor connections (C) Terminal block:
- START/STOP
(D) RS-485 Interface (E) Status-Relays - SOLORUN (hand mode)
- User interface - RS-485 Interface
- Internal interface (F) Optional Relay Card
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