230 & 460 Volt H-A-S Static Converter
This sequence of operation will begin when voltage is applied across terminals T1 & T2 of the H-A-S Static Converter (when properly connected to the motor).
- At the time that the power reaches the H-A-S Static Converter, it flows across the contacts of the Normally Closed Relay (NCR) and energizes the Normally Open Contactor and closes the Normally Open Contacts which provides power to the Electroyltic Capacitors.
- The Motor starts and comes up to full speed as on three phase current.
- When 75 to 80% of the full speed is reached, the NCR will energize and open the circuit to the Normally Open Contactor and open the Normally Open Contact. When the Normally Open contact opens, the Electrolytic Capacitors are removed from the circuit.
- The Motor continues to operate at full speed.
Note: On older models of the H-A-S Static Phase Converter (Serial Numbers prior to 95000), for motors 5 HP and less, the NCR relay also operated as the capacitor start relay (NOC). Therefore on older models, to replace the relay will require adding a NOC Relay, as well as changing the variable resistor.
IMPORTANT NOTE: The starting cycle should not exceed a duration of 15 seconds or 6 starts per hour, (the only exception is when using a heavy duty model that is designed for long starting cycle applications).
Internal Wiring Schematic
- VR – Variable Resistor
- NCR – Normally Closed Relay
- NOC – Normally Open Connector