<30kVA Range

LQDZ 30kVA |220 Input | 0-250V Adjustable Output |Manual Contact Voltage Regulator| ≤3% THD | Short-Circuit Protected

The LQDZ-30kVA contact voltage regulator delivers precision power control for demanding high-current systems. Featuring symmetrical compensation and reversed polarity circuitry, this single-phase regulator maintains ±0.5% voltage linearity during continuous 60-minute operation at full 120A load. Ce···

US$ 2,459.00
Lead time: 30 days

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Product Details

Product Tags

30kVA Contact Voltage Regulator | 0-250V Precision Output | ONAN Cooled

⚡ 120A High-Current Output

🔄 Symmetrical Compensation Tech

🛡️ 2× Short-Circuit Withstand

High-Capacity Voltage Regulation for Industrial Applications

The LQDZ-30kVA contact voltage regulator delivers precision power control for demanding high-current systems. Featuring symmetrical compensation and reversed polarity circuitry, this single-phase regulator maintains ±0.5% voltage linearity during continuous 60-minute operation at full 120A load. Certified to IEC 60076 standards, it's ideal for transformer testing, industrial process control, and research facilities requiring stable 0-250V power.

Input: 220V AC ±10% | Output: 0-250V AC

Rated Capacity: 30kVA | Cooling: ONAN

Duty Cycle: 60 min @ 100% load | THD: ≤3%

Technical Specifications

Parameter	Specification	Standard
Rated Capacity	30kVA	IEC 60076-11
Input Voltage	220V AC ±10%	IEC 60038
Output Voltage	0-250V AC
Output Current	120A continuous
Waveform Distortion	≤3% THD	IEEE 519
Full Load Duration	60 minutes	IEC 60529
Frequency	50Hz ±2%	IEC 60034-1
Regulation Type	Electrical Drive (Servo Motor)

Technical Insight: Voltage Linearity

The reversed polarity circuit maintains precision through:

Linearity Error = |(V_actual - V_ideal)/V_max| × 100% ≤ 0.5%

Where V_ideal = (Position/Max Position) × 250V

Advanced Control & Monitoring Systems

Precision Servo Drive

Brushless DC motor with 0.05° positioning accuracy
Programmable regulation profiles (0.1-20 V/s)
IP67-rated encoder feedback

Integrated Monitoring

Magnetic oil level/temperature indicator
Multi-position contact status display
Protection contacts for overtravel safety

Industrial Interlocks

Control table synchronization interface
Secondary switchgear integration
SIL-2 rated safety circuits

ONAN Cooling System Performance

ONAN thermal management system

Dual-Path Thermal Management

Oil Natural: Convection cooling through radiators
Air Natural: Optimized fin design for heat dissipation
Thermal Capacity: 70°C max winding temp @ full load
Coolant: IEC 60296 mineral oil (___ liters)

Performance Specifications

Characteristic	Value	Benefit
Regulation Speed	0.1-20 V/s adjustable	Precise ramp control for sensitive loads
Linearity Error	< ±0.5% FS	Consistent voltage across entire range
Recovery Time	120 min after full load	Faster return to service
Position Accuracy	0.05° (equivalent to 0.035V)	Micro-precision voltage control

Certifications & Compliance

IEC 60076

IEC 61010-1

CAT IV 300V

IP54 Enclosure

RoHS 3

Download Technical Dossier

Thermal performance curves
Servo motor specifications
Installation foundation requirements
IEC compliance certificates
Interlock wiring schematics

⚠️ Critical Safety Notice

WARNING: This equipment operates at lethal voltages. Always:
• Use CAT IV PPE during operation
• Implement lockout/tagout procedures before servicing
• Verify dead-circuit conditions with certified detectors
• Maintain safe discharge distance during testing

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