Product
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DD
Din 96x48mm digital single parameter power meters either as Watts, VAR or Power Factor. The meters can be specified or both single and three phase systems, 3 or 4 wire and are suitable for both balanced and unbalanced loads. The meters can be specified as a “display only” meter, or with a choice of one or two outputs. One relay or two relays that can be specified as latched or non latched, or an isolated analogue output with or without one relay output. Or with, or without RS485 MODBUS RTU which can also be with or without one relay output. The meter utilises the latest microprocessor technology in both the setting and operation of the meter.
Measuring accuracy: ≤±0.5% FS ±1 digit
Waveform effect: ≤0.2% FS at 30% distortion
Sampling rate: 15 cycles / sec
Response time: 100mSec
System connection:
1P2W (1 CT required)
3P3W (2 CT’s required), suitable for balanced or unbalanced loads
3P4W (3 CT’s required), suitable for balanced or unbalanced loads
Display: 20mm high red LEDs
Voltage input:
Max 500VAC L-L or L-N
VT inputs specify between:
50V-1000KV primary / 50-500V secondary
Frequency:
50/60Hz ±3%
Or 400Hz ±3%
Current input: 1 Amp or 5 Amp direct CT inputs specify CT ratio:1-10000 Amps primary / 1 Amp or 5 Amp secondary
Input burden voltage: ≤0.5VA per phase
Input burden current: ≤0.1VA per phase
Over volts withstand:
x2 continuously
x4 for 2 Secs
Over current withstand:
x3 continuously
x10 for 10 Secs
x50 for 1 Sec (5 Amp version)
Aux supply:
115/230 VAC ±15%, 50/60Hz
ADL: 20-56V AC/DC
ADH: 85-264VAC & 100-300VDC
Power consumption: 5VA
Operating temperature: 0-60 ̊C
Operating relative humidity: 20-95% RH
Temperature coefficient: ≤100PPM / ̊C
Storage temperature: -10 ̊C to +70 ̊C
Dielectric strength: AC 2.0KV for 1 min between input, output/s power and case
Protection: IP54
Relay programmable:
Low
Low-Low
High
High-High
Low-High
Latching: Optional please specify
Number of set points: 1 or 2
Energisation functions:
1 or 2
Start delay
Energisation & de-energisation delay
Energisation latching
Hysteresis
Time delay programmable: 0-9 mins 59.9 secs
Hysteresis programmable: 0-5000 counts
Relay contact: 2 x NO: 1A/230VAC, 3A/115VAC
Accuracy: ≤±0.1% of FS
Ripple: ≤±0.1% of FS
Response time: ≤100mSec (10-90% of input)
Output capability: ≤Voltage 1000 Ohm, Current into 600 Ohm max
Protocol: MODBUS RTU
Baud rate programmable: 1200 / 2400 / 4800 / 9600 / 19200 / 38400
Data bits: 8 bit programmable
Parity programmable: Even, odd or none (with 1 or 2 stop bit)
Address programmable: 1-255 programmable
Distance: 1200 Metres
Terminal resistor: 150 ohm at last unit
* Specify relay configuration, delay times if required and any hysteresis
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