True RMS THREE PHASE VOLTAGE INDICATOR / MONITOR / WINDOW COMPARATOR OVER / UNDER VOLTAGE & FREQUENCY (VM32) MONITOR
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:
ADDITIONAL FEATURES INCLUDE:
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
0.3% of full scale
10A 250V AC
relay status, ave of 3 phases, phase to phase V, frequency