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% |