The QI-POWER-485-300 and QI-POWER-485-300-LV are moulded case high accuracy “CT” style universal DC or AC multi parameter energy meters and are galvanically isolated from the measuring circuit. The “CT’s” have a primary current range of 0-300 Amps AC or 0-400 Amps DC and for voltage up to 800VAC or 1000VDC (LV version 80VAC or 100VDC).
The “CT’s” are equipped with RS485 MODBUS RTU communications. Measuring parameters include Volts, Peak Volts, Current, Peak Current, Watts, VAr, VA, Hz, COS, KWh import, KWh export & THD.
Via the RS485 the “CT’s” are fully configurable with the aid of free software supplied. For example response / filtering times can be configured, along with minimum current and power thresholds (below these values the device cuts off and the measured value is zero. The Baudrate is selected via dip-switches.
The “CT’s” require a supply voltage of 9 to 30VDC and has an internal aperture size of 33mm Dia.
The principle of putting in primary turns on CT’s to reduce the primary current range also applies to these current transformers.
Supply voltage: 9 to 30VDC
Power consumption: <1.3 W
@ 25ºC up to 200 Hz Class 0.5 (I, V, W)
Resolution: 12 bit
Temp coefficient: <200 ppm/ºC
Operating temp: -15ºC to +65ºC
Humidity: 10-90 %RH
Output: RS485 MODBUS RTU
Baudrate: 1200….115200 Baud
Sampling rate: 11K samples per second
Input impedance: 1M Ohm +/-1%
Mounting: Screw or Din rail
Dip switch: 2 way
Max measurement range:
300 Amps AC or 400 Amps DC, 800VAC or 1000VDC
80VAC or 100VDC (LV version)
AC frequency range: 1-400Hz
Measuring parameters: Volts, Peak Volts, Current, Peak Current, Watts, VAr, VA, Hz, COS, KWh import & export, THD min & max each reading
3KV current measurement
4KV voltage measurement
On an uninsulated conductor
Via yellow LED
Supply voltage present - steady
Data communicating – flashing
Terminals: 4 way & 2 way removable plug
QI-POWER-485-300-LV (Low Voltage version)
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