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800.727.5646 atcdiversified.com Diversified Electronics
The ATC Diversified SLA Series is designed to protect 3-phase equipment
PHASE LOSS, UNDER VOLTAGE,
against
onditions.
c
With normal operating voltages applied in the proper ABC sequence, the
nternal relay will energize (PICK-UP). When incorrect phase sequence or
i
phase loss occurs or the three-phase voltages fall below the drop out
voltages, the relay will de-energize (DROP-OUT). On models featuring
ndicators, the LED glows when all line conditions are normal.
i
Both Delta and Wye systems may be monitored. In Wye systems, connec-
ions to neutral are NOT required.
t
For UL Listed units, with field wiring terminals, copper wire with
60°/ 75°C rating must be used for control circuitry connections.
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 voltage. However, with the
exception of lightly loaded motors, enough change is detected by the SLA to provide the required protection when properly adjusted.
SPECIFICATIONS
\\\
DROP-OUT
VOLTAGE
RESPONSE TIMES
STYLE “A” & “E”
RESPONSE TIMES
STYLE “N”
POWER
REQUIRED
OPERATING
VOLTAGE
RESET
INDICATOR LED
OUTPUT RATING
PHASE
SEQUENCE
TEMPERATURE
RATING
U.S. PATENT
NUMBER
WEIGHT
1 Ø Low 83% of Nominal
3 Ø Low 90% of Nominal
Models Up to 300 VAC
Operate 250 mSEC
Release 0.5 SEC
Models Over 300 VAC
Operate 1.0 SEC
Release 2.0 SEC
Operate 60 mSEC
Release 0.5 SEC
Style “A” 3 VA (approx.)
Models up to 300 VAC: 3 VA (max.)
Style “E”
Style “N” 3 VA (max.)
See Ordering Information
Automatic (Manual Optional)
Glows when all conditions are Normal
(On Applicable Models)
SPDT (style “A” and “N”)
DPDT (style “E”)
ABC (Will Not Operate CBA)
Operate 32° to +131°F (0° to +55°C)
Storage -49° to 185°F (-45° to +85°C)
3,611,050
Style “A” NET: 2.24 oz Shipping: 2.56 oz
Style “E” NET: 4.8 oz Shipping: 5.76 oz
Style “N” NET: 5.3 oz Shipping: 5.6 oz
Models over 300 VAC: 7 VA (max.)
Models over 500 VAC: 3 VA (max.)
and
PHASE REVERSAL
STYLE “N”
• Available up to 480 VAC
• Delta or Wye Systems
• Fixed, Lock Shaft, or
Screwdriver Adjustment
• Several Enclosure Styles
TYPICAL APPLICATIONS:
• Air Handlers
• Computer Power Protection
• Conveyor Drive
• Water Waste & Sewage
Machinery
• Oil & Gas Pumps
• Sawmill & Woodpump
Machinery
• Power Substation
MODEL NUMBE
Surface Mounted, 1/4" Quick Disconnect Terminals N
Plug-In models are UL listed only when used with
SLA Series
STYLE “A”
STYLE “E”
P
h
a
s
e
M
o
t
n
i
PROTECTS 3-PHASE
EQUIPMENT AGAINST:
• Phase Loss
• Under Voltage
• Phase Reversal
• Automatic Transfer Switching
for Monitoring Emergency
Power Supplies
• Irrigation Pumps
• Lift Station Pumps
• Robotics Equipment
• Elevator Drives
• Commercial/Industrial Air
Conditioning & Refrigeration
Compressors
>>>>>>
R
Operating Voltage
See Ordering Information
Surface Mounted, #8 Screw Terminals E
Add R Suffix when manual reset is required,
(available only in style “E” enclosure)
SLA A
Type of Operation
Fixed
Lock Shaft Adjusted L
Screwdriver Adjusted S
Enclosure Style
Octal Plug-In, Dust Cover
Blade Plug-In, Dust Cover B
RB-08 relay socket.
F
Options
o
s
r
// SLA Series
A
Phase Voltage Monitors
R
U
215
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