Features of DIRIS A-20 Socomec Multifunction Meter
- Easy to use
- Compliant with IEC 61557-12
- Detects wiring errors
- Customizable
- Compliant with IEC 61557-12
Specifications of DIRIS A-20 Modular Power Metering
| Type | Panel Mounting |
| Dimensions L x H x P | 3.78 x 3.78 x 2.36 in /
96 x 96 x 60 mm |
| Case degree of protection | IP30 |
| Front degree of protection | IP52 |
| Display type | Backlit LCD |
| Type of terminal strips | Fixed or removable |
| Section for connection of voltages and other terminals | AWG 34 … 10 / 0.2 … 2.5 mm2 |
| Section for connection of currents | AWG 34 … 10 / 0.2 … 2.5 mm2 |
| Weight | 14.11 oz / 400 g |
| Current measurement (TRMS) | |
| Via CT primary | 9 999 A |
| Via CT secondary | 5 A |
| Measurement range | 0 … 11 kA |
| Input consumption | 0.6 VA |
| Measurement updating period | 1 s |
| Accuracy | 0.2% |
| Permanent overload | 6 A |
| Intermittent overload | 10 In over 1 sec |
| Voltage measurements (TRMS) | |
| Direct measurement between phases | 50 … 500 VAC |
| Direct measurement between phase and neutral | 28 … 289 VAC |
| Input consumption | ≤ 0.1 VA |
| Measurement updating period | 1 s |
| Accuracy | 0.2% |
| Power measurement | |
| Measurement updating period | 1 s |
| Accuracy | 0.5% |
| Power factor measurement | |
| Measurement updating period | 1 s |
| Accuracy | 0.5% |
| Frequency measurement | |
| Measurement range | 45 … 65 Hz |
| Measurement updating period | 1 s |
| Accuracy | 0.1% |
| Energy accuracy | |
| Active (according to IEC 62053-22) | Class 0.5 S |
| Reactive (according to IEC 62053-23) | Class 2 |
| Auxiliary power supply | |
| Alternative voltage | 110 … 400 VAC |
| AC tolerance | ± 10% |
| DC voltage | 120 … 289 VDC |
| DC tolerance | ± 20% |
| Frequency | 50 / 60 Hz |
| Power consumption | 10 VA |
| Pulse or alarm output | |
| Number | 1 |
| Type | 100 VDC – 0.5 A – 10 VA |
| Max. number of manoeuvres | ≤ 108 |
| Inputs | |
| Number | 3 |
| Power supply | 10 … 30 VDC |
| Minimum width of signal | 10 ms |
| Minimum length between 2 pulses | 18 ms |
| Type | Optical couplers |
| Communication | |
| Link | RS485 |
| Type | 2 to 3 half duplex wires |
| Protocol | MODBUS® in RTU mode |
| MODBUS® speed | 1400 … 38400 baud |
| Operating conditions | |
| Operating temperature range | +14 … +131 °F / – 10 … + 55 °C |
| Storage temperature | -4 … +158 °F / – 20 … + 70 °C |
| Relative humidity | 95% |




