Power PRO

The Power Pro from Trinity is an easy-to-use, cost effective electrical power meter that offers all the basic measurement capabilities required to monitor an electrical installation. In addition to measuring the instantaneous parameters, it also measures accurately all three energies, and also demand, thus helping to measure and control energy costs.

Over the basic metering, it optionally provides two relay outputs, RS485 port supporting MODBUS RTU protocol, dual source metering and THD measurements.

The relays are site programmable for parameter of action, and the value on which to operate.

The CT primary and secondary, PT ratio and installation type are site selectable, thus making it possible to use the meter in all types of three phase installations.


  • Multiparameter Monitoring
  • Measure All important Electrical Values
  • All parameters with default accuracy calss 1.0s
  • Compact 96 X 96 X 55 mm DIN enclosure
  • Optional RS-485 port for connection to SCADA/EMS
  • Optional Alarm/Trip Output (Two) programmable for any parameter including Demand


Type Name Statistics
Input Supply Three Phases and Neutral of a 3P4W system / Three Phases of a 3P3W system
Voltage Direct Voltage Input : Up to 500V L-L, Up to 300V L-N
PT Ratio: Site Selectable
Burden: 0.5VA
Current Secondary Current Input: 5A or 1A (Site Selectable)
CT Ratio: Site Selectable
Range of Reading : 5 - 5000A
Burden: < 1.0V
Overload: 5A CT = 6A RMS Continuous
1A CT = 1.2A RMS Continuous
PowerSupply Auxiliary Supply: 90 - 480 VAC, 50-60 Hz.
Output Relay Two. Individually Field Programmable.
Switching Voltage: Max. 250 VAC
Switching Power : Max. 1000W
Expected Mechanical Life: >10 x 106 switching operations.
Expected Electrical Life : >4 x 106 switching operations.
@(Load = 200VA, Coscp = 0.5)
Measurment True RMSBasic Parameters Voltag(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
LineFrequency 45 to 55 Hz, Accuracy: 0.3% of Reading
Power ActivePower (P) Accuracy: 1% of Reading(For IPFI>0.5)
ReactivePower (Q) Accuracy: 1.5% of Reading
(Between 0.5 Lag to 0.8 Lead)
ApparentPower (S) Accuracy: 1%% of Reading
PoweFactor For Individual phases and System
Accuracy: 1.0% of Reading (IPFI20.5)
Range of Reading: 0.05 to 1.00 Lag/Lead
Energy TotalActiveEnergy(KWh) Range of Reading: 0 to 9999999.9 KWh
Accuracy: 1.0s as per IS13779
TotalApparentEnerg(KVAh) Range of Reading: 0 to 9999999.9 KWh
Accuracy: 1.0% of Reading
TotalApparentEnergy(KVARh) Range of Reading: 0 to 9999999.9 KWh
Accuracy: 1.5% of Reading
PowerQuality THD for each Voltage (Optional)
THD for each Current (Optional)
Demand KVA/ KWDemand Site Selectable. Demand Interval 15/30 Min. Also site selectable
Max.Demand Max. Value reached only. No time & date stamp
Dimensions Bezel 96 X 96 mm
Miscellaneous PanelCutout 92 X 92 mm
Depth ofinstallation 55 mm
  Display 16 X 1 Backlight LCD or 128 X 64 Graphical Backlight LCD(To be specified at the time of Ordering)
  Operatintemp 10°C to 50°C
  Weight 0.35 Kgs (Approx.)
  Min.OperatingCurrent 0.4% to 120% of CT primary
Comm. RS485 Modbus-RTU protocol