Marsh Bellofram Diversified Electronics Division SLH Series Phase and Under Voltage Monitor with Adjustable Hysteresis - Marsh Bellofram - #1

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800.727.5646 atcdiversified.com Diversified Electronics SLH Series Phase Voltage Monitors // SLH Series 225 Phase, Under Vol tage Mo n i t or wi t h A d j . H y s t e r e s i s The SLH Series is designed to protect equipment against PHASE LOSS (single phasing), UNDER VOLTAGE (brown outs), and PHASE REVERSAL (improper sequence). When correct phase sequence and line voltage are present, the internal relay of the SLH will energize (PICK UP). When there is a phase loss, under voltage or phase reversal condition, the internal relay will de-energize (DROP-OUT). When conditions return to normal, the SLH will automatically reset. The SLH is unique in that it has a field-adjustable hysteresis. The voltage setting is adjusted to the desired pick-up point indicated by the dial setting. Then, the hysteresis adjustment is set to the desired percentage to achieve the preferred drop-out point. When models up to 300 VAC are set at 0%, they will pick-up and drop-out at the same point, when set at 10%, the drop-out will be an average of the phase-to-phase voltages 10% below the dial setting pick-up point. Models over 300 VAC are adjustable from 0% to 15%. The SLH is available in the standard voltage ranges (see table below). It has an LED indicator that glows when all conditions are normal. The SLH Series is UL Listed under UL File Number E55826. \\\OPERATION \\\SPECIFICATIONS OPERATING VOLTAGE See Table Below POWER REQUIRED See Table Below RESET Automatic PHASE SEQUENCE ABC (Will Not Operate CBA) HYSTERESIS Models Up to 300 VAC Adjustable, 0% to 10% Below Pick-up Models Over 300 VAC Adjustable, 0% to 15% Below Pick-up OUTPUT RATING Models up to 300 VAC DPDT, 10 Amps @ 120 VAC, Resistive; 211 VA @ 120 VAC, Inductive Models Over 300 VAC DPDT, 5 Amps @ 240 VAC, Resistive; 345 VA @ 240 VAC, Inductive TERMINATIONS (12) #8-32 Screw Terminals INDICATORS LED Glows When All Conditions Are Normal RESPONSE TIMES See Table Below TEMPERATURE RATING Operate 32° to +131°F (0° to +55°C) Storage -49° to 185°F (-45° to +85°C) WEIGHT 14 oz. \\\DIMENSIONS (INCHES) \\\WIRING MODEL NUMBER PICK UP VOLTAGE RESPONSE TIMES OPERATE RELEASE POWER REQUIRED SLH-120-ALE 95-130 V. Adj. 80 m. SEC 0.5 SEC 3 VA SLH-230-ALE 190-270 V. Adj. 150 m. SEC 0.5 SEC 3 VA SLH-440-ALE 430-480 V. Adj. 1.0 SEC 2.0 SEC 7 VA All voltage referenced are phase-to-phase.