DIRIS A-20 Socomec Multifunction Meter

The DIRIS A-20 Socomec Multifunction Meter is a panel-mounted multifunction power monitoring device for low-voltage electrical installations. The device is easy to use thanks to its large backlit LCD display and 4 keys used to view readings and configuration. Compatible with 1A or 5A secondary CTs.

Over/under limit alarms on all parameters can be confgured to detect drifs in measurements. Additional communication and input/output modules can extend the basic functional scope of the DIRIS A-20. Equipped with additional modules, the device can provide the user with flexibility and expandability throughout its service life.

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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%