Kyoritsu · KEW 1051
Kyoritsu KEW 1051 True RMS Digital Multimeter
High-accuracy True RMS multimeter (0.09% basic DC V) rated CAT IV 600 V / CAT III 1000 V, with a low-pass…
List price ₹51,585 30% OFF
₹36,110 + GST
You save ₹15,475
Motor Testing
Checking motor supply, running current, rotation and winding insulation.
The problem
Motors fail from insulation breakdown, single-phasing, overload and wrong rotation. Many failures can be predicted from simple measurements.
Measurement required
Phase sequence before first start, running current per phase, supply voltage balance, and insulation resistance of windings (including PI/DAR trends for larger machines).
Instrument type
A phase indicator, a clamp meter for running current, a multimeter with a low-pass filter for drive-fed motors, and an insulation tester suited to the motor voltage.
Relevant Kyoritsu instruments
Listed because their documented specifications cover this measurement. Check the full specifications for your exact requirement.
Low-pass filter for measurements on motor-drive (inverter) outputs.
Kyoritsu · KEW 3125B
Kyoritsu KEW 3125B High Voltage Insulation Tester
5 kV high-voltage insulation tester: 250 V to 5000 V, readings to 1 TΩ, PI/DAR diagnostics, noise filter and…
List price ₹1,40,586 30% OFF
₹98,410 + GST
You save ₹42,176
PI and DAR insulation diagnosis at up to 5 kV.
Kyoritsu · KEW 8031
Kyoritsu KEW 8031 Phase Indicator
Rugged phase indicator for 110–600 V three-phase supplies: checks phase sequence and open phase in one unit…
List price ₹13,794 30% OFF
₹9,656 + GST
You save ₹4,138
Phase sequence check before connecting three-phase motors.
Kyoritsu · KEW 2117R
Kyoritsu KEW 2117R True RMS AC Clamp Meter
True RMS AC clamp meter to 1000 A with 0.01 A resolution, 33 mm jaw and CAT IV 300 V / CAT III 600 V rating.
List price ₹14,968 30% OFF
₹10,478 + GST
You save ₹4,490
Measures AC running current up to 1000 A True RMS.
Kyoritsu · KEW 3552
Kyoritsu KEW 3552 Digital Insulation / Continuity Tester
Fast (0.5 s) insulation/continuity tester with six test voltages from 50 to 1000 V, readings to 40 GΩ…
List price ₹73,728 30% OFF
₹51,610 + GST
You save ₹22,118
PI and DAR diagnostic tests on insulation.
How to choose
For low-voltage motors a 500 V or 1000 V insulation tester is common; larger or medium-voltage machines need higher test voltages and PI/DAR functions. Follow the motor manufacturer's test recommendations.
Safety considerations
Isolate and lock off the motor before insulation testing, discharge windings after the test, and never insulation-test through a drive without disconnecting it.