Phase tester HZDL-1000III

powerACover-voltage

Overview
The HZDL-1000III three-phase high current generator (three-phase current regulator) is a test instrument developed by Huazheng Electric Manufacture. It integrates low-loss, large-capacity self-coupled regulators and high-permeability iron-core converters with CNC design for improved interference immunity, higher output power and reduced volume compared with previous generations.

Applications

• Primary current injection testing and calibration of protection relays
• Thermal relay and motor protector testing
• Contactor and circuit-breaker functional testing
• Air switch and switchgear testing
• Protection screen and switchboard calibration

Key features and performance characteristics

• Integrated structural design with PVC front panel
• Panel-mounted digital ammeter for direct observation and recording of primary current
• True RMS continuously adjustable output current
• Output range AC 0–1000 A, stepless adjustment
• Rated power 10 kVA (1×3 configuration) with compact volume (typically 30%–70% of similar devices)
• Output waveform: standard sine wave with low ripple (ripple coefficient ≤ 0.3%)
• High current stability (~0.2%) and high measurement stability
• Protection functions: overcurrent and overvoltage
• Time setting/timer range: 0.01 s – 999.999 s

Operation notes

• Verify wiring and connector contact before powering the unit
• If abnormal phenomena occur during startup or testing (ignition, no display, etc.), cut power immediately and check wiring
• Output current terminals must be connected as a closed loop; otherwise no current will be produced
• Select external copper output conductors according to ≥10 A/mm²; standard equipment includes two 3 m test leads
• Designed for short-duration rated duty (5 minutes); for batch testing keep working time <2.5 minutes with ≈10 minutes cooldown between cycles; follow special procedures for long-duration temperature-rise tests

Characteristics / Technical specifications

• Model: HZDL-1000III High Current Generator
• Brand: Huazheng Electric Manufacture
• Environmental classification: Group III (GB6587.1-86)
• Input voltage: AC 380/220 V, 50 Hz, three-phase four-wire
• Rated power: 10 kVA (1 × 3)
• Output current: AC 0–1000 A, stepless adjustable; panel digital ammeter display
• Output voltage: 10 V
• Output waveform: standard sine wave, ripple ≤ 0.3%
• Measurement/display: True RMS effective values for current and voltage; high accuracy (designed with 0.2S materials; practical performance ≈0.3; display level higher than 0.5)
• Output current mode: True RMS continuous adjustment
• Current stability: 0.2%
• Structure: integrated
• Wiring method: as required by the test
• Protections: overcurrent and overvoltage protection
• Time setting: 0.01 s–999.999 s