HZTC-50Z 50kVA HV Hipot Control Unit
Huazheng HZTC-50Z 50kVA HV Hipot Control Unit
I. Overview
The HZTC-50Z series intelligent 50 kVA HV hipot control unit is a specialized auxiliary device designed for use with high-voltage test transformers. When paired with a test transformer, it performs withstand voltage and leakage current testing on electrical equipment, ensuring insulation integrity and operational safety.
The product is manufactured in full compliance with the power industry standard DL/T 848.2-2004, guaranteeing reliable and standardized performance.
II. Working principle
The system operates with the microcomputer measurement and control unit as its central core. This unit manages the output voltage of the electric voltage regulator, which can be controlled through either an automatic or manual working mode depending on the operator's preference and testing requirements.
The high-voltage test transformer then generates the required high voltage, which is applied to the tested product. This application of high voltage causes a test current to flow through the product under test.
Throughout a continuous, specified time period, the system continuously monitors the test current and compares it against the established standard. If the test current remains within acceptable limits, the tested product is judged qualified; if it exceeds the standard, the product is deemed unqualified. This process ensures accurate and reliable assessment of the product's insulation performance.
III. Main functions and characteristics
Professional High-Voltage Testing: Microcomputer intelligent measurement and control ensure high precision and high reliability.
Display & Interface: 8-inch Large-Screen True-Color Touchscreen HMI: Features a multi-language digital interface (English / Spanish / Russian / Chinese selectable) displaying real-time high-voltage output, leakage current, timer countdown, and status indicators with intuitive navigation.
Test Modes & Automation: Supports automatic and manual test modes, with automatic boosting, automatic timing, automatic return to zero, automatic protection, and automatic result storage functions.
Configurable Parameters: Output voltage, protection current, withstand voltage time, and boost speed can all be set arbitrarily.
Conversion Functions: AC/DC conversion, tap, or cascade conversion functions are available (customization required).
Intelligent Voltage Regulation: An intelligent voltage regulation algorithm ensures step-by-step approach to the target voltage, preventing overshoot and protecting the test object.
Safety Interlocks: Comprehensive Triple Safety Interlocks: Incorporates physical zero-voltage start interlock, ground line continuity interlock, and test cage / safety gate interlock (door switch trip) to prevent accidental energization.
Peak Capture: Automatically captures peak voltage and current, facilitating breakdown testing.
Data Management: Test results are automatically saved and can be viewed and printed at any time; a PC online interface is available as a customized option.
Comprehensive Protection: Multiple protection functions for input and output voltage and current, supplemented by audible and visual alarms.
IV. Tech parameters
| Technical Parameter | Standard Specification (HZTC-50Z) |
|---|---|
| Input Power Supply | Three-phase AC 380V ± 10% (or single-phase 220V on request), 50Hz/60Hz |
| Rated Power Capacity | 50 kVA (Continuous motorized auto-regulation) |
| Control Console Output (Primary) | AC 0 ～ 430 V, rated current 0 ～ 116.3 A |
| Matched HV Transformer Output | Typical matched test transformer ratings: • 50kVA / 50kV (Output current: 1000 mA) • 50kVA / 100kV (Output current: 500 mA) • 50kVA / 150kV (Output current: 333 mA) • 50kVA / 200kV (Output current: 250 mA) |
| Voltage & Current Resolution | Voltage: 0.1 kV | Current: 0.1 mA |
| Measurement Accuracy | ±(Reading × 1.0% + 1 digit) |
| Voltage Regulation Mode | Motor-driven closed-loop auto-ramping (customizable ramp speed) / Manual jogging |
| Withstand Timer Range | 0 ～ 9999 s (Auto-countdown when reaching target voltage; auto-zero return) |
| Console Enclosure & Mobility | Heavy-duty steel floor console with industrial swivel casters & dual lifting handles |
| Operating Environment | Ambient temperature: -10°C ～ +40°C | Relative humidity: ≤ 85% RH |
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