UMG 801 - Multifunctional measurement device for recording energy measured values
Doc. no.: 2.053.012.1.j
Status: 12/2020
The German version is the original version of the documentation.
Device Views
The figures serve as illustrations and are not true to scale. Specifications in mm (in).
Rear view
Description: Shows the rear panel with various connection terminals and a bus connector. Sockets for bus connector and sockets for insertion of a module are visible.
Front view
Description: Displays the front panel of the UMG 801, featuring a screen showing voltage, current, and power measurements for L1, L2, and L3, along with total values. Includes navigation buttons (ESC, Home, arrow keys) and terminal labels for Digital Input, RCM/Temperature, Analog Output, Digital Output, and RS485.
Dimensions: 144 mm (5.67 in) width, 90 mm (3.54 in) height.
Side Views
Description: Includes views from the left, showing dimensions of 26 mm (1.02 in), 36 mm (1.42 in), and 14 mm (0.55 in). Also shows a bus connector with plugs for insertion.
Technical Data
General Information
| Net weight | 420 g (0.926 lb) |
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| Device dimensions | approx. w = 144 mm (5.67 in), h = 90 mm (3.54 in), d = 76 mm (2.99 in) |
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| Battery | Type lithium CR2032, 3 V (UL1642 approval) |
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| Integrated memory | 4 GB |
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| Service life of the backlight | 40000 h (50% of the starting brightness) |
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| Installation position | discretionary |
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| Mounting/assembly | suitable DIN rails - 35 mm (1.38 in) (TS 35/7.5, TS 35/10, TS 35/15 x 1.5) |
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| Impact resistance | IK07 according to IEC 62262 |
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Transport and Storage
| Free fall | 1 m (39.37 in) |
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| Temperature | -25 °C (-13°F) up to +70 °C (158 °F) |
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| Relative humidity (non-condensing) | 0 to 95% RH |
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Ambient Conditions During Operation
- Device must be used in a weather-protected, stationary application.
- Fulfills operating conditions according to DIN IEC 60721-3-3.
- Possesses protection class II according to IEC 60536 (VDE 0106, Part 1); a ground wire connection is not required.
| Measurement temperature range | -10 °C (14 °F) .. +55 °C (131 °F) |
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| Relative humidity | 5 to 95% at 25 °C (77 °F), without condensation |
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| Operating height/overvoltage category | 2000 m (1.24 mi) above sea level (Voltage: 1000 V CATIII; 600 V CATIV, Current: 300 V CATII)
4000 m (2.49 mi) above sea level (Voltage: 600 V CATIII; Current: 300 V CATII) |
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| Pollution degree | 2 |
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| Ventilation | No external ventilation required. |
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| Protection against foreign bodies and water | IP20 according to EN60529 |
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Supply Voltage
| Nominal range | DC: 24 V - 48 V, PELV |
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| Operating range | +/-10% of the nominal range |
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| Power consumption | max. 4 W |
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| Maximum power consumption with 10 modules | 12 W (UMG 801 with 4 W plus 10 modules with 0.8 W each) |
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| Recommended overcurrent protection device for the line protection | 2-6 A (char. B) |
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Voltage Measurement
| System Type | Rated Voltages | Category |
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| Three-phase 4-conductor systems | up to 480 VLN / 830 VLL (+/-10%) acc. IEC | CAT III |
| Three-phase 3-conductor systems (grounded) | up to 347 VLN / 600 VLL (+/-10%) acc. UL | CAT III |
| Three-phase 3-conductor systems (ungrounded) | up to 690 VL-L (+/-10%) acc. IEC | CAT III |
| Overvoltage category | 1000 V CAT III acc. IEC, 600 V CAT III acc. UL | |
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| Rated surge voltage | 8 kV | |
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| Fuse for the voltage measurement | 1 - 10 A tripping characteristic B (with IEC/UL approval) | |
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| Metering range L-N | 0¹)... 720 Vrms (max. overvoltage 1000 Vrms) | |
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| Metering range L-L | 0¹)... 1000 Vrms (max. overvoltage 1000 Vrms) | |
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| Metering range N-PE | up to 100 V | |
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| Resolution | 16 bit | |
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| Crest factor | 1.6 (based on the metering range 600 V L-N) | |
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| Impedance | 4 MΩ/phase | |
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| Power consumption | Approx. 0.1 VA | |
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| Sampling frequency | 51.2 kHz | |
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| Frequency of the basic oscillation resolution | 40 Hz .. 70 Hz
0.01 Hz | |
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| Harmonics | 1.. 127. | |
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¹ The device only measures if a voltage L-N of >10 Vrms or a voltage L-L of >18 Vrms is present on at least one voltage measurement input.
Current Measurement ../5 A
| Parameter | Value |
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| Rated current | 5 A |
| Channels | 2 systems (L1, L2, L3, N), Individual channels |
| Metering range | 0.005 .. 6 Arms |
| Crest factor (based on the rated current) | 1.98 |
| Overload for 1 sec. | 120 A (sinusoidal) |
| Resolution | 0.1 mA (color graphic display 0.01A) |
| Overvoltage category | 300 V CATII |
| Rated surge voltage | 2.5 kV |
| Power consumption | approx. 0.2 VA (R₁ = 5 mΩ) |
| Sampling frequency | 25.6 kHz |
| Harmonics | 1.. 63. |
Residual Current Monitoring (RCM)
| Parameter | Value |
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| Rated current | 30 mArms |
| Metering range | 0 .. 40 mArms |
| Response current | 50 μΑ |
| Resolution | 1 μΑ (color graphic display 0.01 A) |
| Crest factor | 1.414 (based on 40 mA) |
| Load | 4 Ω |
| Overload for 20 ms | 50 A |
| Overload for 1 s | 5 A |
| Permanent overload | 1 A |
| Standard | IEC/TR 60755 (2008-01), type A + type B and B+ |
Temperature Measurement
| Parameter | Value |
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| Update time | 1 s |
| Total burden (sensor and lead) | max. 4 ΚΩ |
| Load | <= 30 m (32.81 yd.) unshielded
> 30 m (32.81 yd.) shielded |
| Suitable sensor types | KTY83, KTY84, PT100, PT1000 |
Digital Inputs
4 digital inputs, semiconductor relays, not short-circuit proof.
| Parameter | Value |
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| Maximum counter frequency | 20 Hz |
| Input signal present | 18.. 28 V DC (typical 4 mA) |
| Input signal not present | 0.. 5 V DC, current less than 0.5 mA |
Digital Outputs
4 digital outputs, semiconductor relays, not short-circuit proof.
| Parameter | Value |
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| Switching voltage | max. 60 V DC |
| Switching current | max. 50 mArms DC |
| Response time | Approx. 500 ms |
| Pulse output (energy pulse) | Max. 20 Hz |
Line Length (Digital Inputs/Outputs)
| Condition | Type |
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| Up to 30 m (32.81 yd.) | Unshielded |
| Greater than 30 m (32.81 yd.) | Shielded |
Analog Output
| Parameter | Value |
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| Channels | 1 channel |
| External power supply | max. 33 V DC |
| Current | 0/4...20 mA DC |
| Update time | 0.2 s |
| Load | Max. 300 Ω |
| Resolution | 10 Bit |
RS485 Interface
3-wire connection with A, B, GND
| Parameter | Value |
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| Protocol | Modbus RTU/slave, Modbus RTU/gateway |
| Transmission rate | 9.6 kbps, 19.2 kbps, 38.4 kbps, 57.6 kbps, 115.2 kbps |
| Termination | DIP switch |
Ethernet Interfaces
| Parameter | Value |
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| Connection | 2 x RJ45 |
| Function | Modbus gateway |
| Protocols, services | OPC UA, DHCP, Modbus/TCP, NTP |
| Time synchronization | NTP |
Terminal Connection Capacity (Supply Voltage)
Connectable conductors. Only one conductor can be connected per terminal.
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2 - 2.5 mm², AWG 26-12 |
| Cable end sleeve (not insulated) | 0.2 - 2.5 mm², AWG 26-12 |
| recommended stripping length | 10 mm (0.3937 in) |
| Cable end sleeve (insulated) | 0.2 - 2.5 mm², AWG 26-12 |
| recommended stripping length | 13 mm (0.5118 in) |
| Cable end sleeve | 10 mm (0.3937 in) |
| Length of the contact sleeve | 10 mm (0.3937 in) |
Terminal Connection Capacity (Current Measurement)
Connectable conductors. Only one conductor can be connected per terminal.
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2 - 2.5 mm², AWG 26-12 |
| Cable end sleeve (not insulated) | 0.2 - 2.5 mm², AWG 26-12 |
| recommended stripping length | 10 mm (0.3937 in) |
| Cable end sleeve (insulated) | 0.2 - 2.5 mm², AWG 26-12 |
| recommended stripping length | 13 mm (0.5118 in) |
| Tightening torque screw flange | 0.2 Nm (1.77 lbf in) |
| Cable end sleeve | 10 mm (0.3937 in) |
| Length of the contact sleeve | 10 mm (0.3937 in) |
Terminal Connection Capacity (Voltage Measurement)
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.08 - 4 mm², AWG 28-12 |
| Cable end sleeve (insulated/not insulated) | 0.25 - 2.5 mm², AWG 24-14 |
| Stripping length | 8-9 mm (0.3150 - 0.3543 in) |
Terminal Connection Capacity (A/D Functional Ground)
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2 - 4 mm², AWG 24-12 |
| Cable end sleeve (not insulated) | 0.2 - 4 mm², AWG 24-12 |
| Cable end sleeve (insulated) | 0.2 - 2.5 mm², AWG 26-14 |
| Tightening torque | 0.4 - 0.5 Nm (3.54 - 4.43 lbf in) |
| Stripping length | 7 mm (0.2756 in) |
Terminal Connection Capacity - Multifunction Channels (RCM, temp.)
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2-1.5 mm², AWG 24-16 |
| Cable end sleeve (not insulated) | 0.2-1.5 mm², AWG 26-16 |
| Cable end sleeve (insulated) | 0.2-1 mm², AWG 26-18 |
| Tightening torque | 0.2-0.25 Nm (1.77 - 2.21 lbf in) |
| Stripping length | 7 mm (0.2756 in) |
Terminal Connection Capacity (Digital Inputs/Outputs, Analog Output)
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2-1.5 mm², AWG 24-16 |
| Cable end sleeve (not insulated) | 0.2-1.5 mm², AWG 26-16 |
| Cable end sleeve (insulated) | 0.2-1 mm², AWG 26-18 |
| Tightening torque | 0.2-0.25 Nm (1.77 - 2.21 lbf in) |
| Stripping length | 7 mm (0.2756 in) |
Terminal Connection Capacity (RS485)
| Conductor Type | Specification |
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| Single core, multi-core, fine-stranded | 0.2-1.5 mm², AWG 24-16 |
| Cable end sleeve (not insulated) | 0.2-1.5 mm², AWG 26-16 |
| Cable end sleeve (insulated) | 0.21 mm², AWG 26-18 |
| Tightening torque | 0.2-0.25 Nm (1.77 - 2.21 lbf in) |
| Stripping length | 7 mm (0.2756 in) |
Function Performance Characteristics
Frequency
| Function | Symbol | Accuracy Class | Metering Range | Display Range |
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| Frequency | f | 0.05 (IEC61557-12) | 40 .. 70 Hz | 40.00.. 70.00 Hz |
| Voltage | U L-N | 0.2 (IEC61557-12) | 10.. 720 Vrms | 0.. 999 kV |
| Voltage | UL-L | 0.2 (IEC61557-12) | 18.. 1000 Vrms | 0 .. 999 kV |
| Voltage harmonics | Uh | Cl. 1 (IEC61000-4-7) | 1.. 127 | 0 .. 999 kV |
| THD of the voltage | THDu | 1.0 (IEC61557-12) | 0..999% | 0..999% |
Power and Energy Measurements (5 A rated current)
| Function | Symbol | Accuracy Class | Metering Range | Display Range |
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| Total active power | P | 0.2 (IEC61557-12) | 0.. 12.6 kW | 0.. 999 GW |
| Total reactive power | QA, Qv | 1 (IEC61557-12) | 0.. 16.6 kvar | 0.. 999 Gvar |
| Total apparent power | SA, Sv | 0.5 (IEC61557-12) | 0.. 12.6 kVA | 0.. 999 GVA |
| Total active energy | Ea | 0.2 (IEC61557-12)
0.2S (IEC62053-22) | 0.. 999 GWh | 0.. 999 GWh |
| Total reactive energy | ErA, ErV | 1 (IEC61557-12) | 0.. 999 Gvarh | 0.. 999 Gvarh |
| Total apparent energy | EapA, EapV | 0.5 (IEC61557-12) | 0.. 999 GVAh | 0.. 999 GVAh |
| Phase current | | | 0.2 (IEC61557-12) | 0.005 .. 6 Arms | 0 .. 999 KA |
| Calculated neutral conductor current | INc | 1.0 (IEC61557-12) | 0.03.. 25 A | 0.03.. 999 KA |
| Power factor | PFA, PFV | 0.5 (IEC61557-12) | 0.00 .. 1.00 | 0.00.. 1.00 |
| Current harmonics | Ih | Cl. 1 (IEC61000-4-7) | 1..63 | 0 .. 999 KA |
| THD of the current | THDI | 1.0 (IEC61557-12) | 0..999% | 0..999% |
Power and Energy Measurements (1 A rated current)
| Function | Symbol | Accuracy Class | Metering Range | Display Range |
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| Total active power | P | 0.5 (IEC61557-12) | 0.. 12.6 kW | 0.. 999 GW |
| Total reactive power | QA, Qv | 1 (IEC61557-12) | 0.. 16.6 kvar | 0.. 999 Gvar |
| Total apparent power | SA, Sv | 0.5 (IEC61557-12) | 0.. 12.6 kVA | 0.. 999 GVA |
| Total active energy | Ea | 0.5 (IEC61557-12)
0.5S (IEC62053-22) | 0.. 999 GWh | 0.. 999 GWh |
| Total reactive energy | ErA, ErV | 1 (IEC61557-12) | 0.. 999 Gvarh | 0.. 999 Gvarh |
| Total apparent energy | EapA, EapV | 0.5 (IEC61557-12) | 0.. 999 GVAh | 0.. 999 GVAh |
| Phase current | | | 0.5 (IEC61557-12) | 0.005.. 6 Arms | 0 .. 999 KA |
| Calculated neutral conductor current | INc | 1.0 (IEC61557-12) | 0.03.. 25 A | 0.03.. 999 KA |
| Power factor | PFA, PFV | 1 (IEC61557-12) | 0.00.. 1.00 | 0.00 .. 1.00 |
| Current harmonics | Ih | CI. 1 (IEC61000-4-7) | 1..63 | 0 .. 999 KA |
| THD of the current | THDI | 1.0 (IEC61557-12) | 0..999% | 0..999% |
ⓘ INFORMATION
Detailed information on the device functions and data can be found in the usage information, which is enclosed with the device or is available as a download at www.janitza.com!
