Three Phase Reference Standard Meter -TPRS

The Three Phase Reference Standard Meter (TPRS-1107) is portable equipment from SANDS. The main objective of this device is to calibrate the errors in three-phase and single-phase energy meters i.e. the meter under test (MUT). The TPRS supports both static and electro-mechanical types of meters. It can also be used to compute the voltage, current, energy, power factor etc of the meter under test. It has an LCD display, an alphanumeric keypad that makes it easy for the user to operate the TPRS. It can be interfaced with the PC for data analysis. It has the capability of storing up to 8000 test results.

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Category: Reference Standard Meters.

Features

Storage of 8000 test results with search facility
Primary calibration LED (kWh and KVArh)
Graphical Display 240 x 128 with backlit
Membrane keypad with separate keys for alphabets and Numbers”
Sofware diagnostic feature
Data transfer through RS-232 serial port
External portable printer for on-site printing (optional)
Current transformer ratio checking
Simultaneous test for CT operator meters in the primary and secondary side of CT

Specifications

	TPRS-1107-H	TPRS-1107-L	TPRS-1107-LH	TPRS-1107-H+	TPRS-1107-L+	TPRS-1107-LH+
Applications	HT Meters	LT-CT operated meters	HT Meters	HT Meters	LT-CT operated meters	HT Meters
		LT-Whole current meters	LT-CT operated meters		LT-Whole current meters	LT-CT operated meters
			LT-Whole current meters		CT Ratio test for LT-CT operated meters	LT-Whole current meters
						CT Ratio test for LT-CT operated meters
Direct Mode
Current	10mA-10A	10mA-10A	10mA-10A	NA	NA	NA
Accuracy	0.2S / 0.2	0.2S / 0.2	0.2S / 0.2
Clamp-on Mode /Primary current Measurement
Current	NA	500mA-100A*	500mA-100A*	NA	500mA-100A*	500mA-100A*
Accuracy		0.5S / 0.5 / 0.2S / 0.2	0.5S / 0.5 /0.2S/0.2		0.5S / 0.5 /0.2S	0.5S / 0.5 /0.2S
Secondary Current Measurement
Current	NA	NA	NA	50mA-10A	50mA-10A	50mA-10A
Accuracy				0.2S	0.2S	0.2S

Display Resolution & Parameters
Volage	0.01 V
Current	0.0001 A
Power Factor	0.001
Frequency	0.001 Hz
Energy	0.00001 Wh
Error Percentage	0.00%

Waveforms
To analyse the waveform distortion
To identify cases of CT saturation
Available for both Voltage and Current channels
Harmonics
Voltage and Current Harmonic Distortion
Analysis upto 21 st Harmonic
Instantaneous Measurement
Simultaneous display of all Instantaneous parameters
Phase-wise – Voltage, Current, Active & Reactive Current and Power Factor
Phase wise active, Reactive and Apparent Power
Average Power Factor and Frequency
Mechanical
Dimension	275 x 210 x 110 mm (not exceeding)
Enclosure	ABS FR (V-O) (High Strength Moulded)
Operating Temp	-10 to 50 Deg C
Storage Temp	-25 to 70 Deg C
Rel. Humidity	95% non-condensing
Phasor
Phasor diagram to visualise the phase sequence and lead/lag conditions
Identification of CT reversal, Phase Sequence reversal, CT / PT interchange, Low Power factor
Standards
IEC 60687
IS 14697