The digital power meter VAR-Z16 is a micro-controller based unit which not only measures a host of electrical parameters to display them on a 128 X 64 graphical backlit LCD, but also acts as a comprehensive power factor controlling device due to its sixteen numbers of output relay contacts. There are two alarm relays. These two alarm outputs are individually field programmable to generate alarm as well as the values on which to activate alarm. In addition to this flexibility in terms of power factor controlling, the meter also has one serial port: RS485, supports MODBUS RTU protocol for connections to EMS/SCADA.
The unit is meant for use in three phase four wire systems. The installation type, CT ratios are site selectable.
VAR-Z16 is a versatile meter with a robust electrical load measurement system and consists of all the features needed to implement. It can be configured to suit most control and communication needs.
|Input||Supply||Three Phases and Neutral of a 3P4W system|
|Voltage||Direct Voltage Input : Up to 500V L-L, Up to 300V L-N
Burden : 0.5VA
|Current||Secondary Current Input: 5A or 1A (Site Selectable)
CT Ratio : Site Selectable
Range of Reading : 5 – 5000A
Burden : < 1.0VA
Overload : 5A CT = 6A RMS Continuous
1A CT = 1.2A RMS Continuous
|PowerSupply||Auxiliary Supply: 90 - 470 VAC, 50-60 Hz drawn from 3 phase connection done for measurement.|
|Output||Relay||16 Relays contact with Common for PF Controlling.
2 Relays contact with Common for ALARM Indication.
Switching Voltage : Max. 230 VAC
Switching Power : Max. 1000W
Expected Mechanical Life : >10X106 switching operations
Expected Electrical Life : > 4X106 switching operations @ (Load = 200VA. Cosj = 0.5)
|MEASUREMENT||True RMSBasicParameters||Voltage(Volts L-N & L-L)||VL-N Accuracy : 0.5% of Reading
VL-L Accuracy : 1.0% of Reading
|Current(Amps IR, IY, IB)||Accuracy : 0.25% of Reading|
|Line Frequency||45 to 55 Hz, Accuracy : 0.3% of Reading|
|Power||Active Power (P)||Accuracy : 1% of Reading(For IPFI>0.5)|
|Reactive Power (Q)||Accuracy : 1.5% of Reading(Between 0.5 Lag to 0.8 Lead)|
|Power Factor||For Individual phases and System.
Accuracy : 1.0% of Reading (IPFI ≥0.5)
Range of Reading : 0.05 to 1.00 Lag/Lead
|Energy||Phase wise Active Energy (KWh)||Range of Reading : 0 to 999999999.9 KWh
Accuracy : Class 0.5 as per IS14697
|Phase wise Reactive Energy (KVARh – LAG & LEAD)||Range of Reading : 0 to 999999999.9 KVARh
Accuracy : Class 1.0
|PowerQuality||3rd to 15th Harmonics(Odd) for all Voltages with THD|
|3rd to 15th Harmonics(Odd) for all Currents with THD|
|MISC.||Dimensions||Bezel||144 X 144 mm|
|Panel Cutout||138 X 138 mm|
|Depth of installation||55 mm|
|Display||128 X 64 graphical Backlit LCD|
|Operating temp||10°C to 50°C|
|Weight||0.60 Kgs (Approx.)|
|Operating Current Range||0.4% to 120% of CT primary|