Motor & Line
L1
L2
L3
Direct to
the 3Ø
Line or to
a Motor
1 11/16"
2 5/8"
L1
L2
L3
2"
4 1/8"
5/16"
MAGNET
MRT
• Tests for Motor
Rotation (Off Line)
• Tests for Phase
Sequence (On Line)
• T
ests Presence of
All Phases
• No Fuses
Rotation Tester
Specifications
Electrical
Line Voltage:
20mVAC to 600VAC, 3Ø
Frequency: Manual Turning* to 400Hz
Phase Rotation:
L1, L2, L3 which is A, B, C, Respectively
Rotation Indicator:
Green LED: Correct Rotation
Battery Indicator:
Green LED: Battery OK
Battery Type:
9 Volt DC Alkaline Battery, Included
Connections
Physical
Termination:
Alligator clips w/color coded boots
Cable Length: 9” leads
Packaging: Nema 1 enclosure
Weight: 6.5 oz. w/batt. & w/o magnet
9.0 oz. w/battery & magnet
Magnet Pull Strength: 30 lbs.
Ambient Temperatures
Operating: 0°C to 50°C
Storage: -30°C to 85°C
*Note: Some motors may require turning
faster than others due to the permeability
of the motor, which is related to the ability to generate a sinewave signal large
enough to test.
Ordering Information
MRT - M
R-K Model
M - Magnet Option Installed
•
Tests 20mVAC to
600VAC, 3Ø
• Recessed Push Button
• LED Indicators
• Clip Leads for Easy
Hook-Up
Operation Warning: Always remove power when connecting
and disconnecting the MRT clip leads!
The MRT is designed to determine which combination of motor leads will provide the
desired motor rotation when matched with the three phase electrical system under test.
The Correct Rotation LED indicates the phase sequence to obtain the desired motor
rotation. Remove power from the circuit to be tested and connect the three MRT
(L1, L2, and L3) to the terminals to be tested.
For Line Rotation T
off, re-apply power while depressing the “Rotation Test” push button on the MRT. If the
green Correct Rotation LED lights, the three phase rotation sequence matches the MRT
sequence. If the LED does not light, remove power and reconnect the MRT by switching
two leads. The green Correct Rotation LED should light. Remove power and rewire the
control to match the rotation determined by the MRT. If the LED still does not light, one
or more phases is missing. Check your fuses and wiring.
For Motor Rotation T
motor by hand while depressing the “Rotation Test” push button on the MRT. If the
green Correct Rotation LED lights, then connecting the motor leads to the matching
three phase voltage leads will provide the desired rotation. If it does not light, switch two
leads and try again.
01.01.08
After the MRT has been connect to the line with power
esting:
esting:
Connect the MRT leads to the motor leads. Rotate the
leads
The magnet option allows you to temporarily connect the MRT to your motor,
freeing your hands so you can hook up
the clip leads without holding on to the
MRT. After hook-up is completed, you
can then verify rotation with the push of a
button. Warning: Do not place MRT-M
near magnetic media (diskettes, etc.).
Dimensions
•
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