Xutongyongfu XT200 Portable AC/DC High-Voltage Withstand Test Set for Electric Motors
| Brand | Xutongyongfu |
|---|---|
| Model | XT200 |
| Output Voltage (AC) | 10 kV (6 kV motor class), 15 kV (10 kV motor class) |
| Output Voltage (DC) | 15 kV (6 kV motor class), 25 kV (10 kV motor class) |
| Max Output Current | 550 mA (with compensating reactor) |
| Rated Transformer Capacity | 1.0–1.5 kVA |
| Input Power | AC 220 V ±10%, 50 Hz ±1 Hz |
| Display | Analog pointer meter |
| Voltage Accuracy | ±1.5% |
| Timing Range | 0–999 s (±0.5% accuracy) |
| Overcurrent Protection | 6.7 A |
| Zero-Position Interlock | Yes |
| Auto Trip on Timeout/Overcurrent | Yes |
| Dimensions (W×D×H) | 400 × 300 × 300 mm |
| Weight | 22 kg |
| Operating Temperature | –15 °C to +50 °C |
| Relative Humidity | ≤90% at +25 °C |
| Compliance | GB 50150–2006, DL/T 596–2005, DL/T 848.2–2004 |
Overview
The Xutongyongfu XT200 Portable AC/DC High-Voltage Withstand Test Set is an integrated, field-deployable solution engineered for dielectric integrity verification of medium-voltage electric motors—specifically those rated at 6 kV and 10 kV nominal system voltage. Unlike conventional high-voltage test systems requiring separate AC test transformers and DC high-voltage generators, the XT200 consolidates both AC power frequency (50 Hz) and DC output capabilities within a single, compact enclosure. Its core architecture employs a solid-state regulated high-voltage generator coupled with a manually operated autotransformer-based voltage control stage, enabling precise, stepwise ramping of test voltage under zero-position interlocked conditions. The system operates on standard single-phase 220 V AC mains input and delivers stable, low-ripple DC voltage via internal rectification and filtering—eliminating reliance on external HV stacks or oil-filled transformers. This design directly addresses logistical constraints in utility substations, motor repair shops, and OEM commissioning sites where portability, rapid setup, and minimal cabling are critical operational requirements.
Key Features
- Integrated AC/DC high-voltage generation: Delivers up to 15 kV AC (for 10 kV-class motors) and 25 kV DC from one unit—reducing equipment footprint and calibration overhead.
- Compensating reactor compatibility: Includes a multi-tap, air-core, lightweight reactor (supplied standard) to offset capacitive charging current during AC testing of large stator windings; each tap is labeled with nominal compensation current (e.g., 100 mA, 200 mA, 350 mA), enabling matched reactive compensation without external tuning.
- Zero-position interlock and dual protection: Mechanical and electronic interlocks prevent voltage ramping unless the variac is at null position; simultaneous overcurrent (6.7 A threshold) and programmable timer-based trip functions ensure personnel and DUT safety per IEC 61010-1.
- Analog pointer display with calibrated scale: Provides direct-reading voltage indication traceable to national metrology standards; eliminates digital drift concerns in EMI-rich substation environments.
- Robust electromagnetic design: Utilizes high-permeability magnetic alloys in core construction and aerospace-grade insulating resins to achieve low no-load loss (<2%), thermal stability across –15 °C to +50 °C, and immunity to humidity-induced surface tracking (tested per IEC 60068-2-3).
- Compact mechanical package: Weighs only 22 kg with external dimensions of 400 × 300 × 300 mm—designed for single-operator transport and tabletop or trolley-mounted operation.
Sample Compatibility & Compliance
The XT200 is validated for dielectric withstand testing of stator windings in induction and synchronous motors rated 6 kV and 10 kV, including frame sizes ranging from IEC 250 to 560 and NEMA 213–588. It supports both routine acceptance tests (per GB 50150–2006 Clause 18.0.5) and periodic preventive maintenance tests (per DL/T 596–2005 Section 11.1). All output waveforms meet harmonic distortion limits specified in DL/T 848.2–2004 for AC test sets (<5% THD at full load) and ripple factor requirements for DC outputs (<3% peak-to-peak). The instrument’s grounding interface conforms to Class I protective earth requirements (IEC 61000-6-3), and its enclosure meets IP2X finger-protection rating per GB/T 4208.
Software & Data Management
The XT200 operates in fully manual mode with analog instrumentation and does not incorporate embedded microprocessor control or digital data logging. Voltage ramping, timing initiation, and trip reset are executed via front-panel rotary controls and push-button interfaces. As such, test records—including applied voltage level, duration, pass/fail status, and environmental conditions—must be documented externally using paper logbooks or facility-specific LIMS templates. While lacking native USB/Ethernet connectivity or FDA 21 CFR Part 11-compliant audit trails, the unit is compatible with third-party HV test recorders (e.g., HV ProLogger series) via its isolated 0–10 V analog output signal (available on rear panel terminal block), enabling traceable, timestamped waveform capture when required for GLP/GMP-aligned motor commissioning workflows.
Applications
- On-site commissioning of newly installed high-voltage motors prior to energization.
- Preventive maintenance testing of motor windings during scheduled outages in power generation, petrochemical, and water infrastructure facilities.
- Factory acceptance testing (FAT) of rewound or refurbished stators before return to service.
- Verification of insulation system integrity after moisture ingress, thermal aging, or mechanical damage incidents.
- Supporting condition-based maintenance programs by establishing baseline withstand voltage profiles across motor fleets.
FAQ
Does the XT200 support automated test sequencing or programmable voltage ramps?
No. The XT200 is a manually operated analog test set. Voltage is adjusted continuously via a precision autotransformer knob, and timing is initiated by pressing a dedicated start button.
Can it be used for cable or transformer winding testing?
It is specifically designed and type-tested for rotating machine stator windings. Use for other apparatus requires independent validation against applicable IEC/GB standards and may void compliance claims.
Is the compensating reactor included with all XT200 configurations?
Yes. All standard configurations (XT200/6kV and XT200/10kV) ship with the multi-tap air-core reactor and corresponding HV test leads, grounding cables, and power cord.
What maintenance is required for long-term reliability?
Annual visual inspection of HV bushings and connections; cleaning of ventilation grilles; verification of zero-interlock function and overcurrent trip threshold using calibrated test loads.
Does it comply with international standards such as IEC 61010 or IEEE 4?
While designed to meet Chinese national standards (GB/DL), its electrical safety architecture aligns with IEC 61010-1:2010 requirements for measurement/control equipment. It is not certified to IEEE 4 (Standard Techniques for High-Voltage Testing) but supports test methodologies referenced therein.
