Delta MCS-1800 Specifications Page 48

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NEW!
POWER MONITORING & PROTECTION
958
NEW!
POWER MONITORING & PROTECTION
16
WHEN YOU NEED IT RIGHT, RIGHT NOW, CALL KELE.
kele.com888-397-5353 USA
ORDERING INFORMATION
MOTORSAVER™ THREE-PHASE VOLTAGE MONITOR
250A
Supply Watts 5W
Frequency 50* or 60 Hz
Contact Rating DPDT, pilot duty 480 VA @
240 VAC General-purpose
10A @ 240 VAC
Transient Protection IEC 1000-4-5
Line Voltage Monitored 190-480 VAC, adjustable
Low Voltage Trip 90% of setpoint
Low Voltage Reset 93% of setpoint
Reset Delay Time after Fault Manual or 2-300 seconds
Reset Delay Time after
Power Loss Manual or 2-300 seconds
Trip Delay Time High Voltage 4 seconds
Trip Delay Time Low Voltage 4 seconds
Trip Delay Time Phase Fault 2 seconds
Trip Delay Time Unbalance 2 seconds
Voltage Unbalance Reset 4.5%
Voltage Unbalance Trip 6%
Operating Temperature -40° to 158°F (-40° to 70°C)
Dimensions 5.25"W x 2.9"H x 2.92"D
(13.3 x 7.4 x 7.4 cm)
Weight 0.875 lb (0.396 kg)
Approvals UL and cUL listed, File
#E68520
Warranty 5 years
DESCRIPTION
The MotorSaver™ 250A Three-Phase Voltage Monitor is an
autoranging voltage monitor designed to protect three-phase
motors regardless of size. It is used on 190-480 VAC, 50/60
Hz motors to prevent damage caused by single phasing, low
voltage, phase reversal, voltage unbalance, and high voltage.
Added features include DPDT contacts and an adjustable
restart time-delay setting. The unique microprocessor-based
voltage and phase-sensing circuit constantly monitors
the three-phase voltages to detect harmful power line
conditions. When a harmful condition is detected, the Model
250A's output relays are deactivated after a fixed trip-delay
time period. The output relay reactivates after power line
conditions return to an acceptable level for an adjustable
restart delay time. The trip and reset delays prevent nuisance
tripping due to rapidly fluctuating power line conditions.
FEATURES
Protection of three-phase motors from single phasing,
low-voltage, phase reversal, voltage unbalance, and
high voltage
Adjustable restart delay
DPDT contacts
UL and cUL listed
Bicolor LED indication of normal and fault conditions
Detection of single-phase conditions regardless of
regenerated voltages
OL
OL
OL
OL
Motor
L1
L1
L2
L3
L2 L3
M
Start
M
M
M
M
Stop
Hand
Auto Pilot
Off
Input
Power
Control
Power
Alarm
Power
Alarm
250A
WIRING
MODEL DESCRIPTION
250A MotorSaver three-phase voltage monitor
SPECIFICATIONS
Run Green
Restart Delay Green
Reverse Phase Red
Unbalance/Single Phase Red
High/Low Voltage Red
LED INDICATOR
250A
shown de-energized
Motor Protection with Local Alarm
* 50 Hz will increase all delay times by 20%.
March 2014
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