Vdr - ACR Electronics PowerWatch Reference Manual

PowerWatch©
9
Neutral to Ground: ±1 cycle**
Resolution
Hot to Neutral:
Neutral to Ground: 1 cycle
* Outages are reported with 1/2 cycle resolution until the VDR goes into low
power mode. A VDR will go into the low power mode after approximately one
second of an outage condition. In low power mode, the resolution becomes 8
seconds.
* Surge and Sag and frequency events have 1/2 cycle resolution up to
approximately 10 minutes after which the resolution becomes 8 seconds.
** Neutral to Ground surges have 1 cycle resolution up to approximately 10
minutes after which the resolution becomes 8 seconds.
Clock accuracy ±2 sec./day
Specifications subject to change without notice.
Ó 2007, ACR Systems Inc.
2.1.1

VDR

VDR
Voltage Disturbance Recorder
0.5 cycle
2007 ACR Systems Inc.