Single Phase CT PT Analyzer| XHTX201D
The XHTX201D single-phase CT/PT analyzer is a portable field test instrument engineered for comprehensive testing of protection-class current transformers (CT) and voltage transformers (PT). By integrating excitation characteristic, transformation ratio, polarity, error curve, secondary load, resistance and AC withstand testing into one compact unit, it replaces several single-function instruments and delivers accurate, repeatable results in substations, switchyards and workshops.
Applications & Target Audience: Designed for CT/PT manufacturers, protection and metering testing laboratories, substation commissioning and maintenance crews, and power utilities that perform factory acceptance and periodic field verification of protection-class single-phase current and voltage transformers.
Key Specifications
| Parameter |
Specification |
| Operational Power Supply |
AC220V±20V, 50/60Hz |
| Equipment Output Waveform |
Sine wave |
| Excitation Characteristic Output Voltage |
0~2500V |
| Excitation Output Current |
0~20A |
| Ratio Test Output Current |
0~1000A |
| CT Ratio Measurement Range |
25000A/5A, 5000A/1A |
| PT Ratio Measurement Range |
≤500kV |
| Secondary Load Range |
≤1000VA |
| Resistance Measurement Range |
0.1~300Ω |
| Error Limit |
0.5% (0.2%×reading + 0.3%×range) |
| Operating Temperature |
-10°C to +40°C |
| Relative Humidity |
≤90% RH |
| Altitude |
≤1000m |
| Overall Dimensions |
400 × 200 × 260 mm |
| Weight |
23 kg |
Advanced Features
- One instrument covers CT and PT excitation, ratio & polarity, 5% and 10% error curve, degauss, secondary load, resistance and power-frequency AC withstand tests
- Automatic magnetization curve plotting with intelligent knee-point (inflection) calculation
- Automatically generates 5% and 10% error curves and judges protection winding qualification per GB1207 / GB1208
- Large-screen LCD with graphical waveform display and an intelligent rotary controller
- Built-in micro thermal printer for on-site test result printing
- USB flash disk data export with PC software for Word document and A4 report generation
- Stores up to 3000 test records, retrievable by record number and save date
- Secondary circuit check and power-frequency withstand (AC hipot) testing with automatic protection on excessive leakage
- Compact, rugged and lightweight design under 23 kg, ideal for both field and laboratory use
The XHTX201D gives protection engineers a dependable, all-in-one platform for the acceptance and periodic testing of single-phase CTs and PTs, improving test efficiency while safeguarding relay protection and metering accuracy.
Application Scenarios
- Factory acceptance testing (FAT) and routine testing of protection-class single-phase CT and PT units
- Commissioning and handover testing of new substations, switchyards and industrial power systems
- Periodic / preventive maintenance testing of in-service instrument transformers
- Secondary circuit continuity and burden (load) verification before relay protection commissioning
- On-site troubleshooting of saturation, ratio error, polarity and knee-point problems
- Calibration and testing laboratories that require accurate excitation and turns-ratio measurement
FAQ
Q1: Who is the XHTX201D single-phase CT/PT analyzer designed for?
It is built for CT/PT manufacturers, protection and metering testing laboratories, substation commissioning and maintenance crews, and power utilities that perform factory and periodic field verification of protection-class single-phase current and voltage transformers.
Q2: What test items can the XHTX201D perform?
It performs CT/PT excitation characteristic, transformation ratio and polarity, 5% and 10% error curve, degauss, secondary load (burden), winding resistance, secondary circuit check and power-frequency AC withstand (hipot) testing in one unit.
Q3: What are the main measurement ranges and accuracy of the XHTX201D?
Excitation output 0~2500V / 0~20A, ratio test output 0~1000A, CT ratio up to 25000A/5A (5000A/1A), PT ratio up to 500kV, secondary load up to 1000VA, resistance 0.1~300Ω, with an error limit of 0.5% (0.2%×reading + 0.3%×range).
Q4: Does the XHTX201D support data storage and report generation?
Yes. It stores up to 3000 test records, supports USB flash disk data export, and connects to PC software to generate Word documents and print A4 test reports, while the built-in micro printer allows on-site printing directly from the field.
Q5: Why choose the XHTX201D over conventional single-function testers?
It consolidates excitation, ratio, error curve, load, resistance and hipot tests into one rugged, portable unit weighing under 23 kg, automatically plots curves and error charts and complies with GB1207 / GB1208, saving time and cost in both field and laboratory testing.
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