WT-T103

T103 Single-Phase Energy Meter On-site Calibrator

The T103 is a handheld single-phase energy meter calibrator equipped with a built-in phantom load. It is designed for on-site error verification, electrical parameter measurement, and anti-tampering inspections for low-voltage residential energy meters. The calibrator also enables on-site analysis of voltage and current waveforms, harmonic content, and overall power supply quality.

Connect Us

Download catalog

Product Functions

Waveform & Harmonic Analysis: Measures voltage/current waveforms, vector diagrams, and total harmonic distortion (THD), including up to the 64th harmonic for voltage and current.
Zero/Low Load Testing: Capable of performing energy meter error tests under no-load or light-load conditions.
Dial Test (Energy Check): Supports constant verification (dial test) in both manual and automatic modes.
Real-time Phasor Diagrams: Displays real-time vector diagrams for phase relationship analysis.
RS485 Meter Reading: Equipped with 485 communication for meter data acquisition.
Data Storage: Stores over 500 sets of measurement records with support for USB flash drive memory expansion.
CT Ratio Measurement: Supports Current Transformer (CT) ratio testing (optional).

Product Features

High-Definition Display: Features a large-screen color LCD for clear visibility under sunlight. All electrical parameters are displayed on a single screen, allowing for calibration and storage without switching interfaces.
Manual Audit Mode: Features a rapid manual audit function to quickly estimate energy meter errors and identify potential metering failures or power theft.
System Protection: Built-in over-limit protection and wiring error protection mechanisms.
PC Connectivity: Includes data management software for bidirectional data communication between the calibrator and a PC.
Easy Upgrades: Supports firmware updates via USB flash drive, ensuring users always have access to the latest features.
Portable Design: Integrated, all-in-one handheld design for convenient field use.

Technical Specifications

Active Energy Accuracy Class: 0.2.
V/I/P Accuracy Class: 0.3.
Voltage Input: 120 V to 420 V.
Current Input (Clamp-on): Standard 50A clamp; Optional 5A, 10A, 20A, 100A, 500A, and 1000A.
Virtual Load Output: 5 A.
Pulse Output: High-Frequency / Low-Frequency Standard Energy Pulse Outputs.
Power Supply: Online power extraction (tested line) or external power supply; Battery power (optional).
Dimensions: 204 mm × 112 mm × 37 mm.
Main Unit Weight: 0.54 kg.

Standard Delivery Package

No.	Item	Specification		Quantity
1	Main Unit	T103		1 Set
3	Clamp Meter Module	50A Wired Clamp Meters (Standard, 1 units)		1 Set
		5A Wireless Clamp Meter	Optional
		100A/500A Clamp Meter (Wired or Wireless)	Optional
4	Charging Cable	T103	Optional	1 Set
5	Accessories	voltage test leads, pulse cables, communication cables, data cables, and output leads.		1 Set
6	Documentation	Packing list, Certificate, Manual, Test report, Warranty card		1 Set

Function Configuration List

Function	Main Unit	Voltage Leads	Current Clamp Meter
Function	Main Unit	Voltage Leads	50A	5A	100A	500A
Standard Electrical Parameter Measurement	●	●	●	○
Vector Diagram Display	●	●	●	○
Harmonic Measurement & Waveform Display	●	●	●	○
Manual Audit	●		●
Error Verification	●	●	●	○
Dial Test Error (Energy Check)	●	●	●	○
CT Ratio	●		●	○	○	●
Phantom Load Output	●	●
Data Storage	●
Data Communication	●
Notes: ● indicates Standard accessories. ○ indicates Optional accessories.