DR6305
3 Ø PHASE MONITOR
TRANSMITTER/ALARM

DESCRIPTION

The DR6305 Phase Monitor is a multifunctional measurement instrument that provides:

1. Measurement of the voltage of 2 phases of a 3 phase power line to determine if all phases are present. The instrument outputs 0/20 mA and 0/-20 mA representing voltage for phase A to B and C to B respectively.  One output switches between the 2 currents every 5 seconds. Only one bipolar input on the PLC is required to read voltage levels.

2. An optically isolated transistor switch output if voltage drops below preset level.

3. An optically isolated transistor switch for the indication of proper phase rotation.

4. An LED display to indicate

The DR6305 monitors either 240 VAC or 480 VAC, 3 phase and provides DC output current proportional to the voltage of Phase A and Phase C referenced to Phase B. The DC output current alternates every 5 seconds between positive and negative to indicate A to B or C to B voltages respectively. This allows monitoring of 3 phase voltages with a single bipolar analog measuring device.

The voltage level is monitored and levels below a preset level are indicated by an optically isolated transistor switch output. An LED also indicates low voltage. Phase angle is monitored and phase reversal is indicated by an optically isolated transistor switch output. An LED to indicate phase reversal is also provided.

Internal jumpers allow the product to be used to monitor 240 V or 480 V power systems.

SPECIFICATIONS

POWER
10 to 30 VDC
  1.5 watt

INPUT
300VAC or 600VAC Full Scale
  Jumper Selectable

OUTPUTS
Proportional Output -
  0/20 mADC at 300/600 VAC input between Phase A and Phase B
  0/-20 mADC at 300/600 VAC input between Phase C and Phase B
    (Switches between positive and negative every 5 seconds)

  Optically isolated NPN transistor, normally closed, turns off on low phase voltage
  (<190 VAC or <380 VAC depending on input selection).
    Transistor is saturated switch, 50mA maximum current, 30 VDC maximum voltage.

  Optically isolated NPN transistor, normally closed, turns off on phase reversal.
    Transistor is saturated switch, 50mA maximum current, 30 VDC maximum voltage.

INDICATORS (LED):
Channel being output (AB or CB)
Phase Loss or Low Voltage < 190 V (or 380 V)
Phase Reversal

CONTROLS
Zero and Span adjustments for each channel
Switch to lock channel in AB or CB during calibration
  All controls available on front panel

ISOLATION
Three way transformer isolation
Between the 3 Phase AC input voltage, output signal, and the DC power supply voltage
  At least 1500 VAC sine wave.