Choose the right and suitable energy measurement device for your application
The need for measurement is increasing. In addition to insight into energy consumption, more and more companies want insight into the load on their installation and into the quality of voltage and current (Power Quality solutions). In addition, they want to be notified in time if malfunctions occur.
Variety of energy meters
Fortop has a wide range of energy meters in the range. The differences are mainly in the design, options and type of display. A simple energy meter can suffice in the short term, but in the longer term a more extensive energy meter often pays for itself.
The choice of an energy meter depends on what you want to measure and how you want the data to be presented.
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blueprint measurement levels - reasons to measure
We distinguish four measurement levels, each with their own measuring instrument:
Level 1: Incoming fields at medium voltage level; Power Quality Analysers
- Measurement check of measuring operation of kWh consumption
- Monitor contract value with grid operator
- Registration of voltage dips and peaks
- Voltage quality monitoring EN50160
Level 2: Low voltage side transformers; Power Analysers
- Power room monitoring on transformer and generator
- Monitoring power factor inductive / capacitive
- Voltage quality monitoring IEC61000-2-4
- Registration of voltage dips, peaks and waveforms
- Energy consumption measurement
Level 3: Outgoing fields of main distributors; Energy analysers
- Consumption registration per building part / installation part
- Registration of origin of network pollution
- Determining the power space per installation part
Level 4: Sub-distributors and end-users; DIN rail consumption meters
- Consumption registration per installation part / end-user
- Determining the power space per installation part
Choose the right Power (Quality) analyser
| Meter group | Power Quality Analysers | Power Analysers | ||||||||
| Type | UMG 512-PRO | UMG 605-PRO | UMG 509-PRO | UMG 604-PRO | UMG 96-PQ-L | Expansion module for UMG 96-PQ-L / PA | UMG 801 | UMG CT8-A module | 800-CON | |
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| General specifications | ||||||||||
| Clock/Memory | 256 MB | 128 MB | 256 MB | 128 MB | 64 MB | - | 4 GB | - | - | |
| Mounting type | Panel 144 | DIN-rail | Panel 144 | DIN-rail | Panel 96 | - | DIN-rail | DIN-rail | DIN-rail | |
| Integrated logic | Jasic® | Jasic® | Jasic® | Jasic® | - | - | - | - | - | |
| Web-interface | v | v | v | v | - | - | v | - | - | |
| Power Quality | ||||||||||
| Voltage/current channels | 5/4 | 5/4 | 5/4 | 5/4 | 4/3 | -/1 | 4/4 | -/8 | - | |
| Harmonic analysis | 1..63 + THD | 1..63 + THD | 1..63 + THD | 1..40 + THD | 1..65 + THD | - | 1..127/1..63 + THD (U/I) | 1..25 + THD | - | |
| Dips, peaks and transients | v | v | v | v | v | - | v | - | - | |
| Flicker | v | v | - | - | v | - | v | - | - | |
| Safety measurement (RCM) | v | - | v | - | Option | v | v | - | - | |
| IEC61000-4-30 | Class A | Class S | - | - | - | - | - | - | - | |
| Raport EN50160/61000-2-4 | v/v | v/v | -/v | -/v | - | - | - | - | - | |
| Accuracy V/A(%) | 0,1/0,2 | 0,2 | 0,1/0,2 | 0,2 | 0,1/0,2 | - | 0,2/0,2 | -/0,5 | - | |
| Accuracy kWh | 0,2s | 0,5s | 0,2s | 0,5s | 0,2s | - | 0,5s | - | - | |
| Interfaces and protocols | ||||||||||
| RS485 (Modbus) | v | v | v | v | v | - | v | - | - | |
| Ethernet | v | v | v | v | Option | v | v | - | - | |
| USB | - | - | - | - | - | - | v | - | - | |
| Profibus DP | v | v | v | - | - | - | - | - | - | |
| M-bus | - | - | - | - | - | - | - | - | - | |
| PROFINET | - | - | - | - | - | - | - | - | - | |
| BACnet IP | Option | Option | Option | Option | - | - | - | - | - | |
| Inputs and outputs | ||||||||||
| Digital in-/outputs | 2/2 | 2/2 | 2/2 | 2/2 | 3/3 | - | 4/4 | - | - | |
| Analog in-/outputs | 1/- | 1/- | 1/- | 1/- | Option/1 | 3/- | -/1 | - | - | |
| Voltage / current channels | 5/4 | 5/4 | 5/4 | 5/4 | 4/3 | -/1 | 4/4 | -/8 | - | |
| Auxiliary voltage and article numbers - Standard configuration | ||||||||||
| 95..240Vac/80..300Vdc | JA200414 | JA500416 | JA200412 | JA500415 | - | - | - | - | - | |
| 48..120Vac/24..150Vdc | JA200219 | JA500231 | JA200222 | JA500225 | - | - | - | - | - | |
| 90..277Vac/90..250Vdc | - | - | - | - | JA100420 | JA900119 | - | - | - | |
| 24..90Vac/24..90Vdc | - | - | - | - | JA100422 | - | - | - | - | |
| 24..48Vdc | - | - | - | - | - | - | JA500417 | JA500066* | JA500206* | |
| Auxiliary voltage and article numbers - Low Power (LP) configuration | ||||||||||
| 90..277Vac/90..250Vdc | - | - | - | - | JA100496 | - | - | - | - | |
| 24..90Vac/24..90Vdc | - | - | - | - | JA100497 | - | - | - | - | |
| 24..48Vdc | - | - | - | - | - | - | - | JA900429* | ||
*) Auxiliary power coupled through internal bus
Choose the right Energy analyser
| Energy analysers | ||||||||||
| Type | UMG 96RM-E | UMG 96RM-CBM | UMG 96RM-P | UMG 96RM-PN | UMG 96RM-M | UMG 96RM | UMG 96-PA | Extension module for UMG 96-PA / PQ-L | UMG 96-S2 | UMG 103 CBM |
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| General specifications | ||||||||||
| Clock/memory | 256 Mb | 256 Mb | 256 Mb | - | - | - | 8 MB | - | - | 4 MB |
| Mounting type | Panel 96 | Panel 96 | Panel 96 | Panel 96 | Panel 96 | Panel 96 | Panel 96 | - | Panel 96 | DIN-rail |
| Integrated logic | - | - | - | - | - | - | - | - | - | - |
| Power Quality | ||||||||||
| Harmonic analysis | 1..40 + THD | 1..40 + THD | 1..40 + THD | 1..40 + THD | 1..40 + THD | 1..40 + THD | 1..40/25 + THD (U/I) | - | 1..15 + THD | 1..40 + THD |
| Dips, peaks and transients | - | - | - | - | - | - | - | - | - | - |
| Flicker | - | - | - | - | - | - | - | - | - | - |
| Safety measurement (RCM) | v | - | - | v | - | - | Option | v | - | - |
| IEC61000-4-30 | - | - | - | - | - | - | - | - | - | - |
| Reports EN50160/61000-2-4 | - | - | - | - | - | - | - | - | - | - |
| Accuracy V/A(%) | 0,2 | 0,2 | 0,2 | 0,2 | 0,2 | 0,2 | 0,2 | - | 0,2 | 0,2 |
| Accuracy kWh | 0,5s | 0,5s | 0,5s | 0,5s | 0,5s | 0,5s | 0,5s | - | 0,5s | 0,5s |
| Interfaces en protocols | ||||||||||
| RS485 (Modbus) | -/v | -/v | -/v | -/v | -/v | -/v | v | - | v | v |
| Ethernet | v | - | - | 2x | - | - | - | v | - | - |
| USB | - | v | - | - | - | - | - | - | - | - |
| Profibus DP | - | - | v | - | - | - | - | - | - | - |
| M-bus | - | - | - | - | v | - | - | - | - | - |
| PROFINET | - | - | - | v | - | - | - | -- | - | - |
| BACnet IP | Option | - | - | - | - | - | - | - | - | - |
| Inputs and outputs | ||||||||||
| Digital in-/outputs | 3/5 | 4/6 | 4/6 | 3/5 | -/2 | -/2 | 3/3 | - | -/1* | -/- |
| Analog in-/outputs | 2/- | -/- | -/- | 2/- | -/- | -/- | Option/1 | 3/- | -/- | -/- |
| Voltage / current channels | 4/4 | 4/4 | 4/4 | 4/4 | 4/3 | 4/3 | 4/3 | -/1 | 4/3 | 3/3 |
| Auxiliary voltage and article numbers | ||||||||||
| 90...277Vac/90...250Vdc | JA101912 | JA100792 | JA101910 | JA100085 | JA101911 | JA101905 | JA100284 | JA900119 | JA100400 | JA500138 |
| 24...90Vac/24...90Vdc | JA100104 | JA100126 | JA100133 | JA100134 | JA100105 | JA100101 | JA100304 | - | - | - |
*) For pulse, kWh and kVARh only
Overview table Janitza energy meters MID
| Overview table Janitza energy meters MID | |||||||||
| B21 | B23 | B24 | |||||||
| 311 | 312 Modbus | 313 Mbus | 311 | 312 Modbus | 313 Mbus | 311 | 312 Modbus | 313 Mbus | |
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| Energy Values | |||||||||
| Supplied/consumed energy | v | v | v | ||||||
| Average power (kVAr) | v | v | v | ||||||
| Real Power (kW) | v | v | v | ||||||
| Phase angle | v | v | v | ||||||
| Tariff | double | double | double | ||||||
| Technical details | |||||||||
| Amount of measuring channels | 1-phase | 3-phase |
3-phase |
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| Direct/indirect measurement | direct | direct | indirect | ||||||
| Maximum current | 65A | 3x 65A | 3x ../1A or ../5A | ||||||
| Nominal current | 230VAC | 3x 230VAC / 400VAC | 3x 230VAC / 400VAC | ||||||
| Communication | |||||||||
| kWh pulse output | v | v | v | ||||||
| Pulse frequency (adjustable) | 1-999.999 p./kWh | 1-999.999 p./kWh | 1-999.999 p./kWh | ||||||
| RS-485 (Modbus) | - | v | - | - | v | - | - | v | - |
| M-bus | - | - | v | - | - | v | - | - | v |
| Digital in-/outputs | 2/2 | 2/2 | 2/2 | ||||||
| Datasheets en specifications | |||||||||
| Article numbers | JA500145 | JA500151 | JA500153 | JA500155 | JA500157 | JA500159 | JA500160 | JA500163 | JA500168 |
Why measure power quality with a power analyser?
Power Quality problems are common but are not always visible. Unexplained failure of machine or installation raises many questions. In many cases there are problems with the quality of electrical energy (power quality). What Power Quality is exactly is described in our white paper Power Quality.
View voltage dip with energy meter
You are in a room with the lights on. In a fraction of a second the light drops out briefly and comes on again immediately. Cause? A voltage dip. With an energy meter you have insight into voltage dips. We explain exactly what these voltage dips are in our white paper voltage dips
