Single Phase Meters

Three Phase Meters

Rated Current I_b (I_max) 

10(30)A

5(20)A, 10(40)A, 20(80)A

5(30)A, 10(60)A,

5(40)A, 10(80)A

5(10)A, 10(20), 20(40)A

10(30)A, 20(60)A, 30(90)A
5(20)A, 10(40)A, 20(80)A, 30(120)A
5(30)A, 10(60)A, 20(120)A
5(40)A, 10(80)A, 15(120A)

Reference Voltage U_n

240V, (-50%,+20%) 

3 x 240V, (-50%,+20%)

Frequency 

50/60 Hz (±10%)

 50/60 Hz (±10%)

Rated Thermal Current 

>120% of Imax

>120% of Imax

Accuracy Class 

Class 1 (as per IS:13779) 

Class 1 (as per IS:13779) 

Starting Current 

0.4% of I_b, at U_n and upf 

0.4% of I_b, at U_n and upf 

Voltage Creep 

No creep

No creep

Voltage circuit loss 

< 0.8 W 

< 0.8 W per phase

Display

Impulse Counter (99999.9) 

LCD display (99999.9) 

Impulse Counter (99999.9 or 999999)

LCD display (99999.9 or 999999)

Meter Constant

3200 pulses/kWh or customer specific 

1280 pulses/kWh or customer specific

Dielectric Test 

50 Hz, 2500 V Pc 

50 Hz, 2500 V Pc 

Insulation Resistance 

More than 20 M-ohm at 500Vdc 

More than 20 M-ohm at 500Vdc 

Voltage Shock 

8 KV Impulse Voltage, 1.2/50 

8 KV Impulse Voltage, 1.2/50 

Meter Weight 

0.56 kg (approx.) 

0.92 kg (approx.)

Relevant Standard 

IS:13779, IEC-1036 

IS:13779, IEC-1036 

Anti-tamper features

Reverse current - Auto correction, energy registration and LED indication

Earthed load (optional) - Auto correction, energy registration and LED indication

Phase Neutral Reversal - Auto correction,  energy registration,  LED indication (optional)

Reverse current - Auto correction, energy registration, LED indication (optional)

Phase Loss - energy registration, LED indication (normally ON)

Loss of Neutral - Auto correction, energy registration

Phase Missing - LED indication
(normally ON)