• Voltage Band (Under/Over):
  • Drop Out: ±10% of Range Setting
  • Pick Up: ±7% of Range Setting
• Max Voltage: 550 VAC (Line to Line)
• Phase Sequence: ABC (Will Not Operate on CBA Sequence)
• Power Required: 90 VA Maximum
• Phase Unbalance: 2-10%, Adjustable Drop Out
• Phase Shift: 13^o Drop-Out, 12^o Pick-Up (Ø-Loss)
• Frequency Shift 50/60 Hz: Drop-out ±4%, Pick-up ±3%
• Reset: Automatic or Manual Mode
• Relay: SPDT, 10A @ 240 VAC Resistive, 1/2 HP @ 240 VAC
• Indicators: Red and Green LEDs
• Response Times:
  • Power up 2.5 Second Minimum
  • Fault Delay: 0.1 to 25 S, Adjustable
  • Severe Fault: 100 mS (phase loss, unbalance or reversal)
  • Restart: 0.5 to 300 S, Adjustable (auto-reset)
• Temperature Ratings:
  • Operate: 32-132^oF (0-55^oC)
  • Storage: -49 to 185^oF (-45 to 85^oC)
• Repeat Accuracy: 1% at Fixed Condition
• Enclosure: Style "A" LEXAN Dust Cover
• Weight: 0.35 to 0.5 lbs.
   

• Pump Index

• Pump Hose and Accessories Index

Phase SLU Manual

RELAY OVERVIEW

Phase Monitor Relays (3-Phase Monitors) provide cost-effective protection against premature equipment failure caused by voltage faults on 3-Phase systems (Wye or Delta). 

The SLU Series multi-mode phase monitoring relay was designed for the convenience of plant operators, electricians and engineers.  A single SLU Phase Monitoring Relay can be easily adjusted for the voltage, imbalance percentage and time delay requirements to protect against unbalanced voltages or single phasing regardless of any regenerative voltages.

Both Delta and Wye systems may be monitored.  In Wye systems, connections to neutral and NOT required.

Note: Not recommended for generator or variable frequency drive applications.

PURCHASE RELAYS