30kVA ~ 100kVA Range
Technical Specifications
• **Rated Capacity:** 75kVA
• **Input:** 380V AC ±10% | 194.7A | 50Hz
• **Output:** 0-650V AC | 0-115.4A
• **Waveform Distortion:** ≤3% THD
• **Voltage Linearity:** ≤1% starting deviation
• **Impedance:** ≤10% (linear 50-100% range)
• **Cooling:** ONAN (Oil Natural Air Natural)
• **Duty Cycle:** 60 minutes @ 100% load
• **Control:** DC Servo-Motor Drive
Engineering Highlights
1. Precision Voltage Control
Stepless Adjustment: DC servo-motor enables micrometer-grade voltage tuning (0.1V resolution)
Position Feedback: Optical encoder with terminal/protection contacts
Symmetrical Compensation: Maintains output linearity (<±0.7% deviation)
Reversed Polarity Circuit: Eliminates waveform distortion during transitions
2. Protection & Monitoring Systems
• Magnetic Oil Level Indicator (ASTM D3612)
• Triple Safety Interlocks:
- Regulator ↔ Control Panel
- Regulator ↔ Secondary Switches
- Over-travel cutoff protection
• Thermal Sensors: Winding temperature monitoring
3. Performance Characteristics
| Parameter | Value | Standard |
|---|---|---|
| Voltage Stability | ≤1% | IEC 61000-4-30 Class A |
| Temperature Rise | ≤60K @ full load | IEEE C57.12.00 |
| Regulation Response | <50ms | MIL-STD-704F |
| Insulation Class | H (180°C) | IEC 60085 |
Mechanical Configuration
• **Core Material:** Grain-oriented silicon steel
• **Windings:** Double-helical copper construction
• **Cooling System:** Radiator fins + natural convection
• **Enclosure:** IP23 (indoor/outdoor)
• **Terminals:** 150A silver-plated busbars
Industrial Applications
Power Electronics Testing: IGBT/Thyristor characterization
Aerospace: DO-160 power simulation
Research Labs: Material dielectric strength testing
Manufacturing: Precision electroplating processes
Related PRODUCTS
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LQDZ 90kVA |380V Input | 0-650V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 80kVA |415V Input | 0-420V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 80kVA |380V Input | 0-650V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 75kVA |400V Input | 0-650V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 70kVA |380V Input | 0-420V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 75kVA |380V Input | 0-650V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
-
LQDZ 70kVA |400V Input | 0-420V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 60kVA |400V Input | 0-420V Adjustable Output | Manual Contact Voltage Regulator | ≤3% THD | Short-Circuit Protected
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LQDZ 54kVA |380V Input | 0-420V Adjustable Output | Manual Contact Voltage Regulator|≤3% THD | Short-Circuit Protected