- Description
Designed for the industry
The instrument is dedicated for companies and sites, in which continuous or random assessment of the insulation resistance is required as part of production. It is also perfect for automated production systems.
The meter can be installed in the distribution board, at the operator’s station (assembly or quality control bench), in the control cabinet or even in the rack enclosure. The measurement is performed by means of clamps, used to connect the test leads of the system, in which the instrument is installed.
Model Interface Communication protocol Index MIC-RS RS-232 MIC-RS-SCP WMGBMICRS232 MIC-RS RS-232 Modbus WMGBMICRS232M MIC-RS RS-485 Modbus WMGBMICRS485M It is possible to prepare a version of the meter with the interface and communication protocol requested by the customer.
Features
- Measurement voltage selected within the range of 50…1000 V
- Automatic discharge of the measured object’s capacitance upon completion of insulation resistance measurement
- Measurement current ≤2 mA
- Protection against measurement of live objects
- Two-lead method of insulation resistance measurement
Additional features
- Capacitance measurement after measurement of RISO
- Low-voltage measurement of resistance
- RS-232 or RS-485 interface
- Data transmission to a controlling device through the MIC-RS-SCP or Modbus communication protocol
- External power supply
- The instrument meets the requirements laid down by standard EN IEC 61557
Features
The meter is designed for building in/permanent installation. It plays a Secondary/Slave role, meaning that it executes the commands issued by the Main/Master control device and it does not initialise the transmission on its own. It enables measuring the insulation resistance with the test voltage of up to 1000 V.
The scope set of functions of the meter is tailored to specialised applications. With the AutoRange function, available in two versions, the instrument can switch the test voltage dynamically and adjust it to the current conditions.
There are two measurement modes available: automatic (continuous) and manual (one-time). Under automated testing, the meter can be programmed to measure the capacity or not. In addition, the user may define the default function of the device as the measurement of insulation resistance (RISO), or low resistance (RX).
Response and communication
The functionality of the instrument is extended by digital input and output. This enables the meter to respond to the events in the system, in which it operates.
The meter is operated from the Main/Master control device by means of the MIC-RS-SCP serial communication protocol or Modbus protocol. It enables, for example, starting and stopping the measurement of resistance, reading the measurement result or changing the configuration of the instrument.
Objective: Industry 4.0
The meter is engineered for seamless integration with leading automation and energy management platforms (e.g., systems based on Schneider Electric’s EcoStruxure architecture). Utilizing the industry-standard Modbus RTU protocol over an RS-485 bus, it enables:
- PLC and SCADA integration – direct connectivity to Programmable Logic Controllers (PLCs) and SCADA visualization systems allows for centralized data acquisition and analysis.
- Automation and predictive maintenance – remote measurement control (start/stop, continuous mode) and real-time data retrieval support the transition from preventive to predictive maintenance strategies,
- Flexibility and scalability – the implementation of Modbus RTU simplifies the deployment of meters in both new and retrofitted Medium Voltage (MV) switchgear, ensuring continuous monitoring of the insulation status of critical equipment.
This approach ensures not only high technical reliability but also tangible operational benefits and compliance with modern industrial infrastructure management standards.
- Technical specification
Specifications
Measurement functions Measurement range Reading range Resolution Accuracy Insulation resistance Measuring voltage 500 V
IISOnom = 2 mA + 〈-0.8...0 mA〉500 kΩ…2.00 GΩ
acc. to IEC 61557-21.00 kΩ…2.00 GΩ from 0.01 kΩ from ±(3% m.v. + 8 digits) Measuring voltage 1000 V
IISOnom = 2 mA + 〈-0.8...0 mA〉1000 kΩ…9.99 GΩ
acc. to IEC 61557-21.00 kΩ…2.00 GΩ from 0.01 kΩ from ±(3% m.v. + 8 digits) Capacitance measurement after RISO measurement 0 μF…9.9 μF 0 μF…9.9 μF 0.1 μF ±(5% m.v. + 6 digits) Measurement of resistance with low current 0.0 Ω…999 Ω 0.0 Ω…999 Ω from 0.1 Ω from ±(3% m.v. + 4 digits) „m.v.” - measured value
- Standard accessories
- Files
