182

Diversified Electronics

800.727.5646

atcdiversified.com

MODEL

PICK UP

RESPONSE TIMES

OUTPUT

NUMBER

VOLTAGE

OPERATE

RELEASE

RATING

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.

OPERATING

See Table Below

VOLTAGE

POWER

See Table Below

REQUIRED

RESET

Automatic

PHASE SEQUENCE ABC (Will Not Operate CBA)

HYSTERESIS

Models Up to

Adjustable, 0% to 10%

300 VAC

Below Pick-up

Models Over

Adjustable, 0% to 15%

300 VAC

Below Pick-up

OUTPUT RATING Models Up to

DPDT, 10 Amps @ 120 VAC,

300 VAC

Resistive; 211 VA @

120 VAC, Inductive

Models Over

DPDT, 5 Amps @ 240 VAC,

300 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

Operate

32° to +131°F (0° to +55°C)

RATING

Storage

-49° to 185°F (-45° to +85°C)

WEIGHT

14 oz.

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 volt-

age 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 volt-

ages 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

Phase, Under Voltage Monitor

with Adjustable Hysteresis

IND. CONT. EQ.

496Y

DIMENSIONS (INCHES)

WIRING