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Marsh Bellofram
SLU-0200 Universal Phase Monitoring Relay

SLU-0200 Universal Phase Monitoring Relay

Product catalog summary

Specifications:
The SLU-0200 Phase Monitor Relays are designed to protect 3-Phase systems (Wye or Delta) from voltage faults that can lead to equipment failure. The device is adjustable for voltage, imbalance percentage, and time delay to safeguard against unbalanced voltages or single phasing. It operates on nominal line-to-line voltages ranging from 200-250V for 60Hz and 50Hz systems, and 360-500V for 60Hz systems. The maximum voltage is 550 VAC line-to-line.

Voltage Band:
Drop-out occurs at ±10% of the range setting, while pick-up is at ±7%.

Phase Sequence and Unbalance:
The device will not operate on a CBA sequence and has an adjustable phase unbalance drop-out of 2% to 10% with a hysteresis of 10% of the setting.

Relay Output:
SPDT, 10A @ 240VAC resistive, 1/2 HP @ 240VAC.

Indicators:
Green LED indicates normal operation and active relay, while a red LED indicates a fault and de-energized relay.

Response Times:
Power-up minimum is 2.5 seconds, fault delay is adjustable from 1 to 25 seconds, and severe fault response is 1 second.

Temperature Ratings:
Operational range is 32° to 131°F (0° to +55°C), and storage range is -49° to 185°F (-45° to +85°C).

Enclosure and Weight:
Style “A” 8-Pin Plug In LEXAN® Dust Cover, weighing between 0.35 to 0.5 lbs.

Ordering Information:
The SLU-0200 is a voltage/phase monitor suitable for most generator applications but not recommended for variable frequency drive applications. It is UL Listed under UL File Number E55826.

Catalog excerpts

SLU-0200 Universal Phase Monitoring Relay-1

Universal Phase Monitor C/W Rapid Cycle Lockout UNBAL Normal Fault VOLTAGE MONITOR DIMENSIONS (INCHES) SLU-0200 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-0200 Series multi-mode phase monitoring relay, was designed for the convenience of electrician's, maintenance managers and engineers. This device can be easily adjusted for the voltage, imbalance percentage and time delay requirements to protect against unbalanced voltages or single phasing regardless of Both DELTA and WYE systems may be monitored. In Wye systems, connections to neutral are NOT required. The SLU-0200 Series is UL Listed under UL File Number E55826. NOTE: Can be used for most generator applications. Not recommended for variable frequency drive applications. Call technical support for application Frequency Nominal Line-to-Line Adjustable VOLTAGE BAND Drop-out ± 10% of Range Setting (Under/Over) Pick-up ±7% of Range Setting (Under/Over) ABC (Will Not Operate On CBA Sequence) PHASE SHIFT RAPID CYCLE 5 Cycle Lockout, 30 minute cycle count reset RELAY OUTPUT SPDT, 10A @ 240VAC Resistive, 1/2 HP @240VAC Fault Delay Active Restart Delay Active Fault Delay 1 to 25 SEC, Adjustable_ Severe Fault 1 SEC. (Phase-Loss, Unbalance or _Phase Reversal)_ 0.5 to 300 S, Adjustable (Auto Reset) REPEAT ACCURACY 1 % @ Fixed Condition Style "A" 8-Pin Plug In LEXAN® Dust Cover Diversified Electronics 800.727.5646 atcdiversified. com

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