D3-VM30(N)

0 RELAY

This device measures 3 phase voltage signals and the line frequency.
A phase imbalance of more than 50V or phase reversal is indicated by “PH.ib” and “Ph.Er” respectively.
By changing the calibration setting, the readings may be adjusted from 90 – 110%.
Under normal conditions the average of all 3 phases is displayed. Every key-press of the “+” button cycles the display in the following order: the voltage between phase 1 and 2, then 1 and 3, then 2 and 3, line frequency and the average of all three phases.

ADDITIONAL PROTECTION AGAINST:

• over / under voltage
• over / under frequency (VM32 only)
• loss of neutral (VM3x-N only)
• phase imbalance (phase to phase voltages)
• phase failure
• phase reversal
• phase angle error
• regenerated EMF

ADDITIONAL FEATURES INCLUDE:

• adjustable START-UP DELAY
• REACTION DELAY
• RECOVERY DELAY
• LATCH FACILITY to force mechanical reset after fault
• monitors own supply and frequency
• keypad lock with code

ADJUSTABLE PARAMETERS:

UPPER LIMIT : 150V - 500V

LOWER LIMIT : 150V - 500V

HYSTERESIS: 1V - 20V

PHASE IMBALANCE: 0V - 20V

PHASE IMBALANCE HYSTERESIS: 0V - 20V

FREQUENCY: 45Hz - 55Hz

START-UP DELAY: 0 - 99 seconds

REACTION DELAY (TRIPP DELAY): 0 - 99 seconds

RECOVERY DELAY (min relay off time: 0 - 99 seconds

Specifications:

Accuracy:                                 Voltage:            ±1% of full scale@25°C

                                                Frequency:        ±0.05%

Display Resolution:                    Voltage:            1 Volt

                                                Frequency:        0.1 Hz

Input voltage:                            ±15% of rated voltage

Download User Manual Here