CONPROSYS™ IoT Solution
Three-Phase Motor Breakdown Prediction Monitoring

The Insulation Deterioration Monitoring Module from CONPROSYS™ is a revolutionary product for measuring the insulation resistance of three-phase motors that otherwise cannot be measured without stopping the device. With the CONPROSYS™ Insulation Deterioration Monitoring Module, constant motor insulation deterioration monitoring is possible for three-phase motors, allowing for detection of possible signs of failure.

測定アイコン

Don't Stop Equipment
for Inspections

This module measures leakage current resistance components (I0r) from operating motors with high precision. It allows maintenance to be performed via continuous monitoring, thereby boosting equipment operating ratios.

コンプロセッサアイコン

Support for Low-voltage
Three-phase/AC Servo Motors

Up to 30 kW, ⌀25 mm ZCT included

This module supports three-phase delta connections and three-phase Y connections. It can be applied to a wide range of devices such as pumps, compressors, A/C fans, metalworking machines, and transport equipment.

クラウドアイコン

Work without a Computer
The Cloud Compatible

This module supports controllers with built-in IoT functions such as data collection, web monitoring, and cloud linking. It can be operated without a PC.

System Configuration

Monitoring equipment configuration

The monitoring equipment includes an Insulation Deterioration Monitoring Module (CPS-MM-LC) combined with an M2M Controller Configurable Type CPU Module. Only one CPS-MM-LC Insulation Deterioration Monitoring Module is required for each motor being measured. (Up to 16 modules*)

  • *
    The total current consumption must be 3.3 A or less for the equipment configuration.

M2M Controller
Insulation Deterioration Monitoring Module

Contact Us

Solution Inquiries

Insulation Deterioration Situations and Risks

 Three-phase motors are commonly used in many moving mechanical devices such as machining equipment, water distribution pumps, and elevators. Depending on the operation time, the insulation penetration resistance of the stator coil may lead to declined performance, grounding faults, phase short circuits, layer short circuits, and other situations that may cause equipment failure, resulting in a dangerous situation. Failure of a device will not only stop the equipment but may also cause an accident that may put workers in grave danger.

Insulation deterioration event

Grounding fault In a grounding fault, the insulation between the electrical circuit and ground is extremely reduced, and an arc or conductor–based connection occurs.
Grounding faults can lead to an increased risk of electric shock or equipment damage.
Phase short circuit A state in which the lines between two or three of the phases are in contact with no load passing between them.
Because this results in a circuit with very little resistance, a large amount of current flows through, increasing the possibility of fire or damage to the motor.
Layer short circuit A layer short circuit occurs when contact occurs between the lead portions of the coil, which should be insulated. Such short circuits can result in various problems such as the number of effective coil windings to change, leading to degradations in performance. In addition, because magnetic flux also affects the short-circuited coils, the electromotive force may also be affected, leading to abnormal heating or other problems.

Insulation Deterioration Monitoring Module Settings

The settings for the Insulation Deterioration Monitoring Module can be configured from a web browser by accessing the M2M Controller.

Basic settings including network environment settings, measurement modes exclusively used with the Insulation Deterioration Monitoring Module, power supply frequency, measurement range, and other settings can all be configured from a web browser.

For details, see the reference manual.

Connecting to a Three-Phase Motor

 The Insulation Deterioration Monitoring Module is equipped with a ZCT sensor unit. Refer to the following diagrams to connect the module. For details, see the reference manual.

Three-phase Delta
(3-wire, three-phase corner-grounded System)

Three-phase Delta (3-wire, three-phase corner-grounded System) Click to enlargeモーダルで開く

Inverter Powered by Three-phase Delta
(3-wire, three-phase corner-grounded System)

Inverter Powered by Three-phase Delta<br> (3-wire, three-phase corner-grounded System) Click to enlargeモーダルで開く

Three-phase Wye
(3-wire/4-wire, Three-phase Solidly-grounded Neutral System)
Three-phase Wye (3-wire, Three-phase Solidly-grounded Neutral System)

Three-phase Wye (3-wire/4-wire, Three-phase Solidly-grounded Neutral System) Click to enlargeモーダルで開く

Three-phase Wye
(3-wire/4-wire, Three-phase Solidly-grounded Neutral System)
Three-phase Wye(4-wire, Three-phase Solidly-grounded Neutral System)

Three-phase Wye (3-wire/4-wire, Three-phase Solidly-grounded Neutral System) Click to enlargeモーダルで開く

Inverter Powered by Three-phase Wye
(3-wire/4-wire, Three-phase Solidly-grounded Neutral System)

三相Y結線(3Φ3W 中点接地)の接続方法 Click to enlargeモーダルで開く

Free Sample Software

The monitoring screen and software are built using the CONPROSYS VTC script function and the CONPROSYS HMI screen creation function equipped with the M2M Controller.

Take advantage of a wide selection of sample script programs to begin use immediately.

Programs can also be customized as desired, including with notification emails at certain thresholds or with audible alerts.

Contact Us

Solution Inquiries

To PageTop