Meters UK MOD3CT - Modbus Communication Specifications; Basic Errors

MOD3CT
User Manual
Specifications
Nominal Voltage (Un)
230/400V AC (3~)
Operational Voltage
161/279 - 300/520V AC (3~)
AC voltage withstand 4KV for 1 minute
Impulse voltage withstand
6KV - 1.2 µ S waveform
Basic Current (Ib) 1.5/10A
Max. (Imax) 6/100A
Starting current (Ist)
0.4% of Ib
Imin | Itr
5%Ib | 10% Ib
Over current withstand
30Imax for 0.01s
Operational frequency range
50Hz ±10% | 60Hz ±10%
Internal power consumption
≤2W /10VA per phase
Power consumption on current circuit ≤ 4VA
Test output flash rate (PULSE LED)
400, 800, 1600 or 3200imp/kWh
Test pulse output rate (pins 8 & 9)
400, 800, 1600 or 3200imp/kWh
CT Changing Ratio
27 ratios to choose
Power supply indicator (Phase A, B & C)
Meter is connected. A/B/C voltage power on
Consumption indicator (Pulse & SO LED) Flashing
Communication indicator Communication symbol flashes
Data Communication port Mbus
Data Save 20 years + when power off
Dimensions
Width x Height x Depth (mm)
17.5 x 112 x 60
Weight
0.4kg (net)
Modbus communication specifications:
Bus type
Protocol
Baud rate
Address range
Bus loading
Range
RS485
MODBUS RTU with 16bit CRC
1200, 2400 (default)、4800, 9600
1-255 user settable 64 meters
per Bus
1000m
0.05Ib≤I<0.1Ib 1.0 ±1.5 1.0 ±2.5
0.1Ib≤I<Imax 1.0 ±1.0 0.5L or 0.8C ±2.0
0.1Ib≤I<0.2Ib 0.5L or 0.8C ±1.5 1.0 ±2.5
0.2Ib≤I<Imax 0.5L or 0.8C ±1.0 0.5L or 0.8C ±2.0
Current value
Power fac tor COSΦ
Error%
Power fac tor SINФ
Error %
Ac tive Class 1.0
Reac tive 2.0
BASIC ERRORS (with balanced loads)