ACR Electronics PowerWatch, Reference Manual, Page: 15 / 88

The PowerWatch Voltage Disturbance Recorder
8
2007 ACR Systems Inc.
Surge, Sag & Outage Measurement
Model number: PWV-001
Hot to Neutral
Range: 0 to 200Vrms
Accuracy: ±2Vrms*
Resolution: 1Vrms
Neutral to ground
Range: 3 to 150Vrms
Accuracy: ±2Vrms
Resolution: 1Vrms
Model number: PWV-002
Hot to Neutral
Range: 0 to 270Vrms
Accuracy: ±4Vrms**
Resolution: 2Vrms
Neutral to ground
Range: 3 to 150Vrms
Accuracy: ±2Vrms
Resolution: 1Vrms
* sags less than 70V for >1 sec will be reported
as øV
** sags less than 140V for >1 sec will be reported
as øV
Impulse Measurement
Model number: PWV-001 & PWV-002
Range
Hot to Neutral: 100 to 2500Vpeak
Neutral to Ground: 50 to 2500Vpeak
Accuracy: ±10% of reading
Resolution: 10V
Width Detection:
1 µsec minimum
Phase Angle
Accuracy: ±1° (20° to 180°, 200° to 360°)
Resolution: 1°
Frequency Measurement
Range: 45 to 65Hz
Accuracy: ±0.1Hz (3 cycles minimum)
Resolution: 0.1Hz
Time Measurement
Events <1 second
Accuracy
Hot to Neutral: ±0.5 cycle*