UMG 20CM-CH measurement module for 20 measurement inputs
Product description
The UMG 20CM residual current meter has 20 current measurement channels, two digital outputs (open collector) and measures harmonics up to the 63rd harmonic. The UMG 20CM can also be used to record energy data. GridVis Essentials is already included in the scope of delivery. The measuring device is used to measure and store
Measurement and residual currents. Ideal in data centers or where many smaller distributions need to be measured. Easy to retrofit with separable current transformers.
Reporting before failure (preventive residual current analysis)
Monitoring, evaluation and reporting of creeping increases in residual currents (e.g. triggered by insulation faults and excessive operating currents from system components or consumers.
Main features:
- 20 current measurement channels, 4 voltage measurement channels, status display per channel (LEDs)
- Internal RS485 interface (Modbus as slave), Modbus RTU directly on board
- 20 LEDs - one LED for each current channel (green = O.K., yellow = warning message; red = nominal current exceeded)
- Measuring range with load up to 63 A with closed or divisible current transformers
- Standard measured values: V, A, kW, kVA, kVar, kWh
- Compact system, can be retrofitted in existing systems
- Temperature measurement input (PT100, PT1000, KTY83, KTY84)
- Detailed recording of energy data and load profile
- Various transducer variants for individual applications
- Measurement variants:
- Three-phase and single-phase energy measurement
- RCM measurement of single-phase and three-phase systems
- High sampling rate 20,000 Hz
- Transformer connection check (i.e. line break is detected)
- Harmonic analysis up to the 63rd OS via analysis channel
- Storage of minimum and maximum values with time stamp
- Standard measured values: V, A, kW, kVA, kVar, kWh (list of variables)
- Scalability of the system
Writing points / communication:
- RS485
- Modbus RTU
Measuring accuracy:
- Active energy: Class 1
- Current: 1 %
- Voltage: 1 %
- Measurement data memory 768 kB
Voltage quality:
- Harmonics up to the 63rd harmonic (analysis channel)
- Crest factor / distortion factor
- Minimum and maximum values for currents with time stamp
- Limit value for each current channel / limit value bit
20 current measurement channels:
- Real value effective measurement
- High sampling rate with 20 kHz
- Operating current or RCM measurement (Residual Current Monitor)
2 digital outputs (open collector):
- Pulse output kWh / kvarh
- Relay / PLC inputs
Grid visualization software:
- Free GridVis Essentials
Note: Transparent visualization is optionally available with the new Smart Energy Panel JPC-70
Technical data:
-20 current measurement channels ±1 %
-4 voltage measurement channels ±1 %
-Internal RS485 interface (Modbus as slave)
-2 digital outputs for alarm messages (open collector)
-Measuring range differential current measurement type A 10mA - 1000mA
-Internal wide-range power supply 70 ... 276 V AC/DC
-Dimensions: 90 x 105 x 73 mm (6 HP)
Important:
GridVis software version 7.2 or higher is required for configuration and reading measured values.
The configuration of the devices is comprehensive and is not included in the basic price.
Optional:
Operating current measuring transformer
CT-20 / CT-6-20 / SC-CT-20
Residual current measuring transformer:
CT-20 / CT-6-20 / SC-CT-21 / KBU Series D
