WT-T203 Three-Phase Smart Energy Meter On-site Calibrator
This Calibrator is designed for on-site error calibration of single and three-phase energy meters. It supports electrical parameter measurement, harmonic analysis, on-site wiring anomaly diagnosis, energy retroactive compensation (billing adjustment), and PT/CT secondary burden measurement.
Product Functions
- Electrical Parameter Measurement: Measures voltage, current, power （P,Q,S）, phase angle, frequency, and power factor.
- Power Quality Analysis: Includes harmonic measurement and real-time waveform display.
- Dual-Channel Calibration: Equipped with dual pulse inputs to simultaneously calibrate active and reactive energy; supports concurrent testing of primary and secondary meters. Integrated error testing of the entire metering installation is available via configurable transformer ratios.
- Wiring Analysis & Energy Recovery: Analyzes on-site wiring errors, displays vector diagrams, and calculates real-time energy retroactive compensation.
- Clock Error Verification: Calibrates the daily timing error of the energy meter’s internal clock.
- Smart Constant & Energy Comparison: Features intelligent pulse constant verification and energy accumulation comparison.
- Environmental Monitoring: Measures on-site temperature and humidity.
- Data Acquisition: Supports reading and retrieval of data stored within the energy meter.
- Data Management: Enables storage, retrieval, review of historical data, and re-measurement capabilities.
- Transformer Testing: Supports measurement of CT ratios, as well as CT and PT secondary burdens.
Product Features
- User Interface: Features a 7-inch capacitive touchscreen supporting standalone operation. All electrical parameters are displayed on a single screen with a user-friendly HMI (Human-Machine Interface).
- Intelligent Sensing: Automatically identifies connected current clamps without requiring manual range switching.
- High Linearity: Provides wide-range linear measurement from 1% to 120% of the rated current.
- Wireless Expansion: Supports the integration of wireless current clamps for measurements.
- System Protection: Equipped with over-limit protection and wiring error protection.
- Manual Audit Mode: Features a manual wiring analysis tool where users can input voltage, current, and phase data to diagnose errors, serving as a skill-enhancement tool for operators.
- Connectivity: Includes USB, RS232, and Ethernet ports for PC data interaction and local/remote firmware upgrades.
- Efficiency: Capable of measuring three-phase CT and PT burdens simultaneously, significantly reducing transformer testing time.
Technical Specifications
- Accuracy Class: Class 0.05;
- Voltage Input: Ranges: 100V, 200V, 400V; Accuracy: Class 0.05 within 30V~500V;
- Direct Current Input:
Accuracy Class: 0.05 for 0.5%
~120%
;
- Clamp-on Input: Standard 5A clamps (Class 0.2 within
). Optional 100A, 500A, 1000A, and 3000A clamps available.
- Power Measurement Accuracy: Class 0.05 (Direct input), Class 0.2 (Clamp input);
- Power Supply:
(Local power adapters available).
- Power Source: Direct line power, power adapter, or optional battery.
- Dimensions: ≤316mm × 265mm × 92mm;
- Main Unit Weight: ≤1.8kg.
Standard Delivery Package
| No. | Item | Specification | Quantity | |
|---|---|---|---|---|
| 1 | Main Unit | T203C Main Unit | 1 Set | |
| 2 | Direct Input Module | 0-5A, Class 0.05 | 1 Unit | |
| 3 | Clamp Meter Module | 5A Wired Clamp Meters (Standard, 3 units) | 1 Set | |
| 5A Wireless Clamp Meter | Optional | |||
| 50A/100A/500A Clamp Meter (Wired or Wireless) | ||||
| 1000A Wireless High-Voltage Clamp Meter | ||||
| 4 | Power Adapter | T203C Power Adapter | 1 Set | |
| 5 | Accessories | voltage test leads, pulse cables, meter-reading cables, and optical sampling cable sets. | 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 | |||
|---|---|---|---|---|---|---|
| 5A | 50A | 100A | 500A | |||
| Standard Electrical Parameter Measurement | ● | ● | ● | ○ | ○ | ○ |
| Vector Diagram Display | ● | ● | ● | ○ | ○ | ○ |
| Harmonic Measurement & Waveform Display | ● | ● | ● | ○ | ○ | ○ |
| Error Verification | ● | ● | ● | ○ | ○ | ○ |
| Metering Installation Error Verification | ● | ● | ○ | ○ | ○ | |
| Wiring Error Analysis | ● | ● | ● | ○ | ○ | ○ |
| Energy Retroactive Compensation for Incorrect Wiring | ● | ● | ● | ○ | ○ | ○ |
| Dial Test Error (Energy Check) | ● | ● | ● | ○ | ○ | ○ |
| CT Ratio | ● | ● | ○ | ○ | ● | |
| CT Secondary Burden | ● | ● | ● | |||
| PT Secondary Burden | ● | ● | ● | |||
| Notes: ● indicates Standard accessories. ○ indicates Optional accessories. |
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