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Diversified Electronics

800.727.5646

atcdiversified.com

Diversified Electronics

800.727.5646

atcdiversified.com

The SLC Series is designed to protect 3-phase equipment against Phase

UNBALANCE and PHASE LOSS conditions.

With normal operating voltages applied to all three phases, the internal

relay will remain de-energized (DROPPED-OUT).

When a Phase Loss or Phase Unbalance exceeding the pre-selected trip

point occurs, the relay will energize (PICK-UP). The SLC series is typi-

cally used in conjunction with a SHUNT TRIP BREAKER.

Both Delta and Wye systems may be monitored. In Wye systems, con-

nections to neutral are not required.

NOTE: When a phase is lost while the motor is running, a condition

known as regeneration occurs where a voltage is induced into the open

phase nearly equal in magnitude to the normal phase-to-phase volt-

age. The SLC series is designed to detect this condition when properly

adjusted.

OPERATION

SPECIFICATIONS

OPERATING

See Table Below

VOLTAGE

TRANSIENT

1000 Volts For 8 mSEC

PROTECTION

RESET

Automatic

PHASE UNBALANCE 2% to 10%, Adjustable

RANGE

INDICATORS LED

Glows On Fault Condition

RESPONSE TIMES

Operate

0.08 SEC

Release

0.7 SEC

TEMPERATURE

Operate

32° to +131°F (0° to +55°C)

RATING

Storage

-49° to 185°F (-45° to +85°C)

U.S. PATENT

4,331,995

NUMBER

WEIGHT

12.5 oz.

MODEL

OPERATING

POWER

OUTPUT

NUMBER

VOLTAGE

REQUIRED RATING

SLC-120-ALE

120 VA

3 VA

DPDT, 5 Amps,

Max.

Resistive;

345 VA, Inductive

SLC-230-ALE

208/240 VAC

@ 240 VAC

SLC-380-ALE

380 VAC

7 VA

DPDT, 3 Amps,

Max.

Resistive;

360 VA, Inductive

SLC-440-ALE

440/480 VAC

@ 600 VAC

All voltages referenced on this page are phase-to-phase.

Phase Unbalance & Loss Monitor

DIMENSIONS (INCHES)

WIRING