Diversified Electronics Phase Voltage Monitors
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AC-2020
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AUTO MODE Upon application of normal line
voltages, the Delay-On-Make time delay will begin and the green LED
indicator will flash. On completion of the delay, the output relay will
energize and the green LED indicator will glow. When a fault condition
occurs, the green LED indicator and output relay will de-energize and
the appropriate fault indicator(s) will glow. When conditions return to
normal, the applicable fault indicator(s) will extinguish and the output
relay will automatically reset (energize) on completion of the
Delay-On-Make time delay. A manual test may be accomplished during
normal operation by moving the memory reset switch to the RESET position
and releasing. Reset will cause output relay to de-energize and green
LED indicator to flash. After completion of the preset Delay-On-Make
time delay, the output relay will re-energize and the green LED
indicator will glow.
MANUAL MODE Upon application of three phase
line voltages, the output relay will remain de-energized. If line
voltages are within preset limits, the output relay will be energized
and the green LED indicator will glow by momentarily placing the reset
switch in the RESET position. The memory function is active with the
reset switch in the W/MEMORY position. Upon fault conditions and
subsequent restoration of normal conditions, the appropriate fault
indicator(s) glow continuously. To clear fault indicators and
re-energize relay, move the reset switch momentarily to the RESET
position and release. If the memory function is not desired, place reset
switch in the W/O MEMORY position.
DELAY MODE Upon application of normal line
and control voltages, the green LED indicator will glow and the control
output will energize. Line faults and/or control voltage (19-288 VAC)
interruptions will cause the control output to de- energize. During
abnormal conditions the green LED indicator flashes for the 3 minute
Delay-On-Break time delay. Subsequent interruptions will not lengthen
the delay. After the delay expires and conditions have returned to
normal, the green LED indicator will glow and the control output will
re-energize. If the control volt- age is not restored to normal within
the delay, the green LED indicator will continue to flash and the
control output will remain de-energized. Subsequent restoration will
result in immediate control output.
Operating
Voltage:
Auto Ranges |
240 VAC:
190-270 VAC, Adj. 50/60 Hz
480 VAC: 380-540 VAC, Adj. 50/60 Hz |
Maximum Voltage: |
550 VAC |
Trip Points
|
Under Voltage:
-10% of setting
Over Voltage: +10% of setting
Hysteresis: Differential between pick up and drop out, 5% of nominal
setting.
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MPA-1000
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The MotorGuardian (TM) is a microprocessor based overload relay, designed to
provide protection for 3-phase AC motors. It offers a broad range of
features in one compact package providing a cost effective solution for
monitoring and managing motor performance. A unique feature of the
MotorGuardian is its ease of installation. It is provided with Clamp-On
C.T.'s that can accommodate up to 1500 ampere loads. Actual motor
operating conditions are accessed by the scrolling menu and viewed by a
two line highly visible vacuum fluorescent display. Fault conditions are
also displayed indicating the specific cause of the occurring fault.
Approval: |
UL Listed |
Input Voltage: |
200-500 VAC
3-Phase (Nominal) |
Frequency: |
50/60 Hz |
Phase Sequence: |
ABC (will not
operate CBA) |
Output Contact: |
DPDT; Form "C"
10 A @ 240 VAC |
Alarm Output: |
SPDT; Form "C"
10 A @ 240 VAC |
Control Voltage: |
None Required |
RELAY
ACCURACY |
|
Voltage: |
±1% |
Current: |
±1% |
G. F. Timing: |
±10% |
Timing: |
5% ±1 Second |
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PRA Series
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The PRA-100 Series are designed to allow the
output to energize only when the phase connections are in the proper
sequence. For use in applications where motor direction is critical or
the installation is required by code to have sequence detection.
Operating Voltage: |
208-480 VAC ±15%,
phase-to-phase, 50/60 Hz |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Response Time: |
200 mSec. (approximately) |
Reset: |
Automatic |
Output Rating |
Style A & N: SPDT, 10 Amps @ 240
VAC Resistive, 1/2 hp @ 240 VAC
Style E: DPDT, 10 Amps @ 240 VAC
Resistive, 1/2 hp @ 240 VAC |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Total Apparent Power: |
11 VA @ 480 VAC |
Indicators |
Green LED: Glows on correct
sequence
Red LED: Glows on incorrect
sequence |
Enclosures |
Style “A”: Model No.
PRA-100-AFA, LEXAN® dust cover 8 pin plug-in
Style “N”: Model No.
PRA-100-AFN, Glass filled VALOX® surface mounted 6-1/4" male quick
connect
Style “E”: LEXAN® Surface Mount
Model No. PRA-100-AFE, #8-32 screws |
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SLA Series
SUA Series
|
The SLA Series is designed to protect
three-phase equipment against Phase Loss, Under Voltage, and Phase
Reversal conditions.
With normal operating voltages applied in the
proper ABC sequence, the internal relay will energize (PICKUP). When
incorrect phase sequence or phase loss occurs or the three-phase
voltages fall below the drop out voltages, the relay will de-energize
(DROPOUT).
Both Delta and Wye systems may be monitored.
In Wye systems, connections to neutral are not required.
Dropout Voltage |
1 Ø Low: 83% of Nominal
3 Ø Low: 90% of Nominal |
Response Times |
Models Up to 300 VAC
Operate: 250 Milliseconds
Release: 0.5 Seconds |
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Models Over 300 VAC
Operate:
1.0 Seconds
Release: 2.0 Seconds |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Phase Sequence: |
ABC (Will Not Operate CBA) |
U.S. Patent Number: |
3,611,050 |
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SLA
Series (Plug-In Style Enclosure)
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Operating Voltage: |
See table on data sheet |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Power Required: |
3 VA (Approximately) |
Indicator LED: |
Glows When All Conditions
Are Normal (On Applicable Models) |
Response Times: |
Models Up to 300 VAC
Operate: 250 Milliseconds
Release: 0.5 Seconds |
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Models Over 300 VAC
Operate: 1 Second
Release: 2.0 Seconds |
Reset: |
Automatic |
Agency Approval: |
UL Approved: File #E55826;
Reference Classification UL-508 |
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CSA Certified: File #LR40123;
Reference Specification C22.2 No. 0 and C22.2 No. 14 |
U.S. Patent Number: |
3,611,050 |
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SLA
Series (Surface Mounted Enclosure)
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Operating Voltage: |
See table on data sheet |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Power Required: |
3 VA (Approximately) |
Indicator LED: |
Glows When All Conditions
Are Normal (On Applicable Models) |
Response Times: |
Models Up to 300 VAC
Operate: 250 Milliseconds
Release: 0.5 Seconds |
|
Models Over 300 VAC
Operate: 1 Second
Release: 2.0 Seconds |
Reset: |
Automatic |
Agency Approval: |
UL Approved: File #E55826;
Reference Classification UL-508 |
|
CSA Certified: File #LR40123;
Reference Specification C22.2 No. 0 and C22.2 No. 14 |
U.S. Patent Number: |
3,611,050 |
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SLA
Series (Epoxy Encapsulated)
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Operating Voltage: |
See table on data sheet |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Power Required: |
Models Up to 300 VAC: 3 VA,
Maximum
Models Over 300 VAC: 7 VA,
Maximum
Models Over 500 VAC: 3 VA,
Maximum |
Indicator LED: |
Glows When All Conditions
Are Normal |
Response Times
|
Models Up to 300 VAC
Operate: 250 Milliseconds
Release: 0.5 Seconds |
|
Models Over 300 VAC
Operate: 1.0 Second
Release: 2.0 Seconds |
Agency Approval: |
UL Approved: File #E55826;
Reference Classification UL-508
CSA Certified: File #LR40123;
Reference Specification C22.2 No. 0 and C22.2 No. 14 |
U.S. Patent Number: |
3,611,050 |
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PBC Series
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The PBC Series offers protection to
three-phase equipment that is required to operate between two voltage
limits. All three phases are monitored individually for a preselected
under and over voltage limit.
With normal operating voltages applied, the
internal relay will energize (PICKUP). When the voltages on any or all
phases fall outside the preset Over/Under trip points for loner than the
Release delay, the relay will de-energize (DROPOUT). When line
conditions return to normal, the PBC Series Monitor automatically resets
and the internal relay energizes.
Hysteresis: |
4% |
Response Times |
Operate: 100 Milliseconds
Release: 0.5 Seconds |
Output Rating: |
DPDT, 3 Amps @ 600 VAC,
Resistive; 360 VA @ 600 VAC,
Inductive; 1/2 hp |
Indicators LED: |
Glows On Fault; (1) For
Over,
(1) For Under |
Temperatures |
Operate: 0° to +40°C
Release: -45° to +85°C |
Power Required |
Models Up to 300 VAC:
7 VA, Maximum
Models Over 300 VAC:
6 VA, Maximum |
Repeat Accuracy: |
0.1% @ Fixed Condition |
Reset: |
Automatic |
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PBD Series
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The PBD Series offers protection to
three-phase sequence sensitive equipment that is required to operate
between two voltage limits. All three phases are monitored individually
for a preselected Under and Over voltage limit.
With normal operating voltages applied in the
proper ABC sequence, the internal relay will energize (PICKUP). When the
voltages on any or all phases fall outside the preset Over/Under trip
points for longer than the Adjustable Release delay, the relay will
de-energize (DROPOUT). When line conditions return to normal, the PBD
Series Monitor automatically resets and the internal relay energizes.
Both Delta and Wye systems may be monitored.
In Wye systems, connections to neutral are not required.
Phase Sequence: |
ABC (Will Not Operate CBA) |
Hysteresis: |
4% |
Response Times |
Operate: 100 Milliseconds
Release: 0.1 to 30 Seconds,
Adjustable |
Output Rating: |
DPDT, 3 Amps @ 600 VAC,
Resistive; 360 VAC @ 600 VAC,
Inductive; 1/2 hp |
Indicators LED: |
Glows On Fault; (1) For
Over, (1) For Under |
Temperatures |
Operate: 0° to +40°C
Release: -45° to +85°C |
Power Required |
Models Up to 300 VAC: 7 VA,
Maximum
Models Over 300 VAC: 6 VA,
Maximum |
Repeat Accuracy: |
0.1% @ Fixed Condition |
Reset: |
Automatic |
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PBE Series
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In today’s industrial environment, Line Noise
and Power Line Harmonics are becoming an increasing problem. True-RMS
detection may be necessary for achieving accurate Line Voltage
measurement.
With normal operating voltages applied in the
proper ABC sequence, the internal relay will energize (PICKUP). When the
voltages on any or all phases fall outside the preset Over/Under trip
points for longer than the Dropout Time delay, the relay will
de-energize (DROPOUT). When line conditions return to normal, the PBE
Series Monitor automatically resets and the internal relay energizes.
Phase Sequence: |
ABC (Will Not Operate CBA) |
Hysteresis: |
2% |
Response Times |
Operate: 200 Milliseconds
(approximately)
Release: 0.2 to 30 Seconds,
Adjustable |
Output Rating: |
DPDT, 10 Amps Resistive,
1/4 HP @ 240 VAC |
Indicators LED: |
Glows On Fault; (1) For
Over, (1) For Under, (1) For Sequence |
Temperatures |
Operate: 0°C to +40°C
Storage: –45°C to +85°C |
Repeat Accuracy: |
0.1% @ Fixed Condition |
Reset: |
Automatic |
Enclosure: |
Style “E” LEXAN® Surface
Mount |
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SLB Series
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The SLB Series is designed to protect
three-phase equipment against Phase Unbalance, Phase Loss, and Phase
Reversal conditions.
With normal operating voltages in the proper
ABC sequence and the 120 VAC control voltage applied, the internal relay
will energize (PICKUP). When any combination of Phase Unbalance
exceeding the preset value or Phase Loss or Phase Reversal occurs for
longer than the preset drop out time, the output relay will de-energize
(DROPOUT). If the control voltage is removed, the relay will
de-energize.
The wide input voltage range permits use on
any one of several standard line voltages without recalibrating. The
unbalance detection level is adjustable from 2% to 15%.
Both Delta and Wye systems may be monitored.
In Wye systems, connections to neutral are not required.
The LED indicator glows when conditions are
normal.
Operating Voltage: |
See Table on Data Sheet |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Control Voltage: |
120 VAC, 1 Phase, 60 Hz |
Response Times |
Operate: 60 Milliseconds, Fixed
Release: 0.1 to 5 Seconds,
Adjustable |
Output Rating: |
SPDT, 10 Amps @ 120 VAC, 5
Amps @ 240 VAC, Resistive |
Indicators LED: |
Glows When All Conditions
Are Normal |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Repeat Accuracy: |
0.1% @ Fixed Condition |
|
The SLB Series will not
detect an equal and simultaneous reduction in voltage on all three
lines (Brown Out). |
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SLC Series
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The SLC Series is designed to protect
three-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 preselected trip point occurs, the relay will energize
(PICKUP). The SLC series is typically used in conjunction with a shunt
trip breaker.
Both Delta and Wye systems may be monitored.
In Wye systems, connections to neutral are not required.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Phase Unbalance Range: |
2% to 10%, Adjustable |
Response Times |
Operate: .08 Seconds
Release: .7 Seconds |
Temperatures |
Operate: 0ºC to +55ºC
Storage: -45ºC to +85ºC |
Indicator LED: |
Glows On Fault Condition |
Transient Protection: |
1000 Volts For 8
Milliseconds |
Reset: |
Automatic |
U.S. Patent Number: |
4,331,995 |
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SLD
Series (Plug in)
|
The SLD Series is designed to protect
three-phase equipment against Phase Unbalance, Phase Loss, Under
Voltage, and Phase Reversal conditions.
With normal operating voltage present on all
three phases in the proper phase sequence, the internal relay will
operate (PICKUP). When an incorrect phase sequence or phase loss occurs
or the three phase line voltages fall outside the preset unbalance or
under voltage settings, the internal relay will release (DROPOUT). When
all conditions return to normal, the relay will reset.
The Adjustable Release delay is provided to
ignore momentary voltage fluctuations that cause nuisance tripping.
Both Delta and Wye systems may be monitored.
In Wye Systems, connections to neutral are not required.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Phase Unbalance Range: |
2% to 10%, Adjustable |
Response Times |
Operate: 120 milliseconds
Release: 0.1 to 20 seconds,
Adjustable (on Under Voltage only); 100 milliseconds on Phase
Reversal and Unbalance |
Output Rating: |
SPDT, 10A @ 240 VAC,
Resistive; 1/2 hp @ 240 VAC |
Power Required: |
3VA Typical |
Isolation Input/Output: |
2500 Volts |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Indicator LED: |
Glows When All Conditions
Are Normal |
Transient Protection: |
1000 Volts for 8
Milliseconds |
Reset: |
Automatic |
U.S. Patent Number: |
4,331,995 |
Agency Approval: |
UL Recognized File #E55826 |
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SLD
Series
(Surface Mount)
|
The SLD Series is designed to protect
three-phase equipment against Phase Unbalance, Phase Loss, Under
Voltage, and Phase Reversal conditions.
With normal operating voltage present on all
three phases in the proper phase sequence, the internal relay will
operate (PICKUP). When an incorrect phase sequence or phase loss occurs
or the three phase line voltages fall outside the preset unbalance or
under voltage settings, the internal relay will release (DROPOUT). When
all conditions return to normal, the relay will reset.
The Adjustable Release delay is provided to
ignore momentary voltage fluctuations that cause nuisance tripping.
Both Delta and Wye systems may be monitored.
In Wye Systems, connections to neutral are not required.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Phase Unbalance Range: |
2% to 10%, Adjustable |
Response Times |
Operate: 120 milliseconds
Release: 0.1 to 20 seconds,
Adjustable (on Under Voltage only); 100 milliseconds on Phase
Reversal and Unbalance |
Output Rating: |
SPDT, 10A @ 240 VAC,
Resistive; 1/2 hp @ 240 VAC |
Power Required: |
3VA Typical |
Isolation Input/Output: |
2500 Volts |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Indicator LED: |
Glows When All Conditions
Are Normal |
Transient Protection: |
1000 Volts for 8
Milliseconds |
Reset: |
Automatic |
U.S. Patent Number: |
4,331,995 |
Agency Approval: |
UL Recognized File #E55826 |
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SLE Series
|
The SLE Series is designed to protect
three-phase equipment against Phase Unbalance, Phase Loss, and Under
Voltage.
With normal operating voltage present on all
three phases, the internal relay will energize (PICKUP). When a phase
loss occurs or the voltages fall outside the preset unbalance or under
voltage settings, the internal relay will de-energize (DROPOUT). The
relay automatically resets when the line conditions return to normal.
Both Delta and Wye systems may be monitored.
In Wye Systems, connections to neutral are not required.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Phase Unbalance Range: |
2% to 10% Adjustable |
Response Times |
Models Up to 300 VAC:
Operate: 60 Milliseconds
Release: 0.5 Seconds
Models Over 300 VAC:
Operate: 1.0 Seconds
Release: 2.0 Seconds |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Indicator LED: |
Glows When All Conditions
Are Normal |
Transient Protection: |
1000 Volts for 8
Milliseconds |
Reset: |
Automatic |
U.S. Patent Number: |
4,331,995 |
Agency Approval: |
UL Listed File #E55826 |
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SLH Series
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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 (DROPOUT). 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
pickup point indicated by the dial setting. Then, the hysteresis
adjustment is set to the desired percentage to achieve the preferred
dropout point. When models up to 300 VAC are set at 0%, they will PICKUP
and dropout at the same point, when set at 10%, the dropout will be an
average of the phase-to-phase voltages 10% below the dial setting pickup
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.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Phase Sequence: |
ABC (Will Not Operate CBA) |
Power Required: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Indicator LED: |
Glows When All Conditions
Are Normal |
Response Times: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Reset: |
Automatic |
Hysteresis |
Models Up to 300 VAC: Adjustable, 0% to 10% Below Pickup
Models Over 300 VAC: Adjustable,
0% to 15% Below Pickup |
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 |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Terminations: |
(12) #8-32 Screw Terminals |
Agency Approval: |
UL Listed; file #E55826 |
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SLJ Series
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The SLJ Series has a built-in Delay-on-Make
Time Delay. The SLJ continuously monitors the three phase lines for
adverse conditions such as PHASE LOSS (single phasing), UNDER VOLTAGE
(brown outs), and PHASE REVERSAL (improper sequence). When any of these
conditions occur, the internal relay will de-energize (DROPOUT). When
the fault is corrected, the field adjustable delay-on-make delay begins.
Upon completion of the time delay, the internal relay will energize
(PICKUP). Any subsequent interruptions will reset the delay period.
The SLJ’s phase monitor operates the same as
the SLA Series. It will dropout for a phase loss if any phase drops
below 83% of its nominal setting and it will also dropout for under
voltage if all three phases drop below 90% of its nominal setting. It is
phase sequence sensitive and will not allow startup if the three phases
are reversed.
The SLJ is available in the same standard
operating voltage ranges as our other Phase Monitors (see table below).
The delay-on-Make Timer is field adjustable from 0.2 to 8.0 minutes.
There are two LED indicators. The green
indicator glows when all conditions are normal, and the red indicator
glows when the internal relay is energized.
The SLJ is ideally suited for multiple
equipment installations to stagger start equipment after a fault
condition.
Operating Voltage: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Power Dissipation: |
See Table on Data Sheet
(click on Data Sheet button to the left) |
Indicators |
Green LED: Glows When All
Conditions Are Normal
Red LED: Glows When Relay is
Energized |
Response Times |
Operate: 0.2 to 8.0 Minutes,
Adjustable
Release: See Table on Data Sheet |
Output Rating: |
See Table on Data Sheet |
Temperatures |
Operate: 0°C to +55°C
Storage: -45°C to +85°C |
Enclosure: |
Style “E” LEXAN, Surface
Mounted |
Terminations: |
(12) #8-32 Screw Terminals |
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SLM Series
|
Phase Sequence: |
ABC (Will Not
Operated CBA) |
Voltage Trip
Points |
Drop -Out: ±10% of Setting
Pickup: ±7% of Setting |
Frequency Trip
Points |
Dropout: ±4% of 60 Hz (380 V, 50 Hz)
Pickup ±3% of 60 Hz (380 V, 50 Hz) |
Unbalance Trip
Points |
Dropout:
7%
Pickup: 5% |
Output Rating: |
DPDT, 360 VA
Inductive; 1/2 hp 3 A Resistive @ 600 VAC |
Response Times
Operate |
Sampling:
2 Seconds
Delay-on-make: (Sampling Delay) + (1.5 seconds to 5 minutes
Delay)
Adjustable in one (1) minute increments |
Release |
Under
Voltage 1.5 Seconds, (Approximately)
Over Voltage: 1.5 Seconds, (Approximately)
Frequency Shift: 1.5 Seconds, (Approximately)
Unbalance: 2.0 Seconds, (Approximately)
*Phase Loss/Shift: 1.0 Seconds, (Approximately) |
Reset Modes: |
Automatic; Manual: Automatic w/Memory |
† LED
Indicators: |
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|
|
Designation |
Color |
State |
Condition |
Time
Delay/Normal |
Green
|
Flashing
ON |
Timing
Output Energized |
Under Voltage |
Red |
ON |
Fault |
Over Voltage |
Red |
ON |
Fault |
Phase Sequence,
Shift |
Red |
ON |
Fault |
Frequency Shift |
Red |
ON |
Fault |
Unbalance |
Red |
ON |
Fault |
Power Required: |
7
VA Typical |
Transient Withstand: |
2500
Volts for 10 ms |
Temperatures |
Operate: 0°C to + 55°C
Storage: -45°C to +85°C |
Enclosure: |
LEXAN Surface Mounted |
Terminations: |
#8-32 Screw Terminals |
Agency Approvals: |
UL
Listed: File #E55826
CSA Certified
File #LR40123 |
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UOA Series
|
The UOA Series offers protection to single
phase equipment that is required to operate above a certain voltage
minimum.
With Operating voltage applied above the
preset PICKUP voltage, the internal relay will energize. When the
voltage falls below the preset DROPOUT voltage for a period longer than
the release delay, the output relay will de-energize. When line
conditions return above the preset PICKUP voltage, the UOA Series
automatically resets and the internal relay energizes.
The HYSTERESIS in each unit provides a
differential between the PICKUP and DROPOUT trip points.
Response Times |
Operate: 50mSec.
(Approximately) (500 mSec. on 12 VDC units)
Release: 0.5 Seconds (Approximately) |
Output Rating: |
Style A - DPDT, 5A @ 240
VAC,
Resistive: 211 VA @ 240, Inductive.
Style N- SPDT, 10A @ 240 VAC,
Resistive; 180 VA, Inductive.
Style E - DPDT, 5A @ 240 VAC Resistive:
345 VA @ 240 VAC, Inductive. |
Temperatures |
Operate: 0°C to
+55°C
Storage: -45°C to +85° |
Power Required |
Models Up to 110 VDC: 3
Watts, Maximum
Models Up to 300 VAC: 5 VA, Maximum
Models Over 300 VAC: 5 VA, Maximum |
Agency Approval: |
UL Recognized File #E55826 |
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VBA Series
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The VBA Series offers protection to single
phase equipment that is required to operate between two voltage limits.
Supply voltage is monitored for a preselected UNDER and OVER voltage
limit.
With normal operation voltage applied, the
internal relay will energize (PICKUP). When the voltage fall outside the
preset Over/Under trip points for longer than the release delay, the
relay will de-energize (DROPOUT). When line conditions return to normal,
the VBA Series automatically resets and the internal relay energizes.
The HYSTERESIS in each unit on the Under and
Over limits provides a differential between the PICKUP and DROPOUT trip
points.
Response Times |
Operate: 50mSec. (Approximately) (500 mSec. on 12 VDC units)
Release: 0.5 Seconds (Approximately) |
Output Rating: |
Style A - DPDT,
5A @ 240 VAC,
Resistive; 211 VA @ 240,
Inductive.
Style N - SPDT, 10A @ 240
VAC, Resistive: 180 VA, Inductive. |
Temperatures |
Operate:0°C
to +55°C
Storage: -45°C to +85°C |
Power Required |
Models Up to
110 VDC: 3 Watts, Maximum
Models Up to 300 VAC: 5 VA, Maximum |
Agency Approval: |
UL Recognized
File #E55826 |
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