UMG 801

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Technical details

Item no.: 5231003

Data sheet (407 kB)

Janitza UMG 801 Front 1

Data at a glance

Certifications

UL certified

Three-phase 4-conductor system, grounded, max (IEC)

480 / 830 V AC (IEC)

Three-phase 4-conductor system, grounded, max (UL)

347 / 600 V AC (UL)

Three-phase 3-conductor system, ungrounded, max

690 V AC

Supply voltage DC

24 V DC, PELV

Three-conductor / Four-conductor (L-N, L-L)

Yes / Yes

Quadrants

4

Sampling rate 50/60 Hz

51.2 kHz (V) / 25.6 kHz (A)

Effective value from periods (50/60 Hz)

10/12

Current measuring channels

8

Combined function: Analog/Temperature/Residual

4

Harmonics V / A

1st – 127th / 1st – 63rd

Distortion factor THD-U/THD-I in %

Yes

Transients

18 µs (V) / 39 µs (A)

Accuracy V; A

0,2 %; 0,2 %

IEC 61000-4-30

Class S

Active energy class

0.2S (…/5 A)

Digital inputs

4

Digital / Pulse output

4

Memory size

4 GB

Recording time (factory setting)

no factory setting

Integrated logic

Comparator

Software & Function

GridVis®-Essential

GridVis® Items

1

Other properties

Unbalance
Short-term flicker / long-term flicker
Short-term interruptions
Memory min. / max. values
Analogue output

Integrated functions

Clock
Webserver

Interfaces

RS485
USB
Ethernet (2x)

Protocols

Modbus RTU
Modbus Gateway (To query slave devices)
Modbus TCP/IP
OPC UA

Functions and features

Communication

2 Ethernet interfaces enabling simultaneous (switched mode) or separate (dedicated mode) use

Complex measurement device and module topologies can be implemented when used separately

Extreme Value Capture

Easy-to-use extreme value capture functionality for the most important measured variables, such as conductor currents and voltages

Device Homepage

Integrated web server on base device for customized configuration without needing to use additional software

Power quality

Capture, analysis and documentation of disturbance variables, e.g. harmonics current
Event and transient detection with storage in PQDiff and Comtrade
Comprehensive visualization in the event browser

Maximum data security

Secure communication through OPC UA security structures
Data storage (redundancy) provided by the basic device’s onboard memory

Minimum integration costs

Easy integration into a higher- level system through open communication architecture via OPC UA standard (e.g. GLT, SCADA and ERP applications)
Versatile interfaces that can be used simultaneously
Gateway functionality for integrating additional devices e.g. Janitza UMGs from downstream measurement levels

Flexible use

Multifunction channels are available and offer flexible options depending on the application required: RCM, temperature or current measurement

Future-proof-investment

Modular extension of the measuring points by measuring modules
Open and future-proof communication through various interfaces and OPC UA Server
IPv4 and IPv6 Ethernet IP addresses

Profit from OPC UA

Easy integration of measurement data from the basic device and measurement modules into higher-level systems (e.g. building control systems, SCADA systems)
Cyber security: Integrated security mechanisms to protect against unauthorized access and misuse
Configuration of the entire measuring system via OPC UA
Future-proof software architecture as the OPC UA standard evolves with new applications

Managing and using Data

Various interfaces for simultaneous use
2 Ethernet interfaces
RS485 interface for data readout and can be used as gateway
Comprehensive protocols and services (OPC UA and Modbus)

Visualizing, documenting and analyzing

Comprehensive options for visualizing, analyzing and documenting energy measurement data (GridVis® software)
Integrated automatic report generation (GridVis® software)
Integrated color graphic display for visualization and intuitive configuration on site

High-precision measurement

High sampling frequency (51.2 kHz voltage)
1024 Samples for the voltage measurement
High measurement accuracy on all channels (V: 0.2% / A: 0.2% / kWh: class 0.2)
Maximum safety: 1000 V CAT III
Extensive power quality parameters
- Voltage up to 127th harmonic and interharmonics – THD-U and THD-I
- THD-U and THD-I
- unbalance
- Event and transient detection

All in one device

The basic device has:
8 current measurement channels with 1/5 A inputs
4 Multifunction channels, optionally configurable as RCM, temperature measurement channels or additional current measurement channels
Extensive measurement data memory with 4 GB for storage of measurement data
Two groups with four digital IOs each (tariff changeover and pulse input, logic states)
Analog output (DC 0/4-20 mA)