>350kVA Range

LQDZ 750kVA |400V Input | 0-10.5kV Adjustable Output |Manual Contact Voltage Regulator| Industrial Voltage Stabilizer

Industrial-grade LQDZ-750KVA contact voltage regulator with 0-10.5kV output, ≤1% starting voltage, and robust overload capacity (1.6In for 5min). Features ONAN cooling and IEC-compliant safety.

US$ 65,748.00
Lead time: 60 days

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Product Details

Product Tags

LQDZ-750KVA/0.4KV/0~10.5KV Contact Type Voltage Regulator

Premium Solution for High-Power Testing: 750kVA motor-driven regulator with extended 0-10.5kV output range and advanced thermal management. Engineered for precision dielectric testing and industrial applications.

Technical Specifications

Parameter	Specification	Standard
Rated Capacity	750kVA	IEC 60270
Input Voltage	0.4kV ±10%
Output Voltage Range	0 - 10.5kV
Output Current Range	0 - 71.4A
Input Current	1875A
Waveform Distortion (THD)	≤3%
Short-Circuit Impedance	≤7.5% (linear 50-100% range)
Starting Voltage	≤1% of rated	IEC 60076-11

Performance Features

Motor-Driven Precision

Electrical drive regulation ensures smooth voltage adjustment with ultra-low starting voltage (≤1%) for sensitive test applications

Enhanced Overload Protection

1.2×In for 30 minutes
1.4×In for 15 minutes
1.6×In for 5 minutes

Robust Short-Circuit Resilience

Withstands 2× rated current for 8 cycles without damage to windings or mechanical components

Advanced Thermal Management

ONAN (Oil Natural Air Natural) cooling system maintains optimal operating temperatures during intensive testing cycles

Duty Cycle Optimized

Operational profile: 5 minutes ON / 30 minutes OFF with maximum 20 cycles per day

Structural Design

Integrated regulation and voltage raising units
Position limit switches (upper/lower)
Oil level indicator and drain valve

Safety & Insulation Specifications

Component	Test Voltage	Duration	Standard
LV Winding to Earth	20kV	1 minute	IEC 60076-3
HV Terminal to Ground	5kV	1 minute	IEC 60076-3

Industrial Applications

High-Voltage Dielectric Testing

Ideal for breakdown voltage tests on transformers, bushings, and cables per IEC 60243 standards

Power Equipment Validation

Verification testing for switchgear, circuit breakers, and protective relays up to 10.5kV

Research & Development

Precision voltage ramping for insulation material research and component stress testing

Compliance & Certifications

IEC 60076 IEC 61010-1 ISO 9001:2015

All units include comprehensive safety features: overcurrent protection, thermal monitoring, and emergency cutoff.