<1000KV Range

LQHCG 450KV-300pF Multiple Chopping Gap: Three-Stage High Voltage Testing System

The LQHCG 450KV-300pF features a three-stage 150kV modular design delivering 450kV total rating with <0.1μs chopping time precision and non-inductive 100Ω damping resistors for EHV testing applications.

US$ 7,179.00
Lead time: 45 days

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LQHCG 450KV-300pF Multiple Chopping Gap: Three-Stage High Voltage Testing System

Product Overview

The LQHCG 450KV-300pF Multiple Chopping Gap represents the pinnacle of high voltage testing technology, featuring a unique three-stage design with 450kV total rating. This system delivers exceptional performance for high precision impulse testing applications, combining 150kV stage modules with ultra-precise chopping time control (σ<0.1μs).

Key Technical Advantages

Three-stage 450kV modular design
150kV per stage with perfect voltage distribution
300pF chopping capacity
Sub-microsecond timing precision (σ<0.1μs)
Non-inductive damping resistors (100Ω×2)

Detailed Technical Specifications

Core Electrical Parameters
Parameter	Specification	Remarks
Total Rated Voltage	450kV	Impulse/Lightning
Stage Configuration	3 stages	Modular design
Stage Voltage	150kV per stage	±1% balance
Chopping Capacity	300pF	±5% tolerance
Standard Chopping Time	2-6μs	Adjustable

Precision Timing Characteristics

Chopping Time Deviation: <+0.1μs standard deviation
Time Adjustment Resolution: 10ns
Trigger Jitter: <5ns between stages
Synchronization Accuracy: 99% minimum

Electrical Components

Damping Resistors: 100Ω × 2 (non-inductive design)
Voltage Range: 30kV-385kV operational
Insulation Level: 500kV power frequency withstand
Partial Discharge: <5pC at 450kV

Three-Stage Modular Design

Voltage Distribution System

Precision graded ring design
Automatic voltage balancing
±1% stage voltage matching
Modular replacement capability

Stage Interconnection

Low-inductance bus design
Corona-free connections
Integrated damping network
Optical trigger synchronization

Stage Performance Metrics
Parameter	Stage 1	Stage 2	Stage 3
Voltage Balance	150kV ±1%	150kV ±1%	150kV ±1%
Timing Sync	Reference	<5ns	<5ns
Trigger Reliability	99.5%	99.4%	99.3%

Performance Data

Chopping Wave Characteristics

Voltage Range: 30kV-385kV (8.5%-85% of rated)
Wavefront Time: 1.2μs ±30%
Wavetail Time: 50μs ±20%
Chopping Ratio: 20%-80% adjustable

Environmental Specifications

Operating Temperature: -10°C to +45°C
Humidity Range: <80% non-condensing
Altitude: <1000m (derating above)
Cooling: Natural convection

Chopping Time Consistency

Minimum: 1.95μs
Maximum: 6.05μs
Mean: 3.98μs
σ: 0.08μs

Typical Applications

Extra High Voltage (EHV) Testing

400kV+ transformer impulse tests
EHV cable system evaluations
GIS (Gas Insulated Switchgear) testing

Research Laboratory Use

Dielectric breakdown studies
Lightning impulse simulations
High voltage component development

Standards Compliance Testing

IEC 60076-3 (Power transformers)
IEC 60270 (Partial discharge)
IEEE Std 4 (High voltage testing)

Safety & Maintenance

Safety Systems

Three-stage interlocked discharge system
Automatic grounding verification
Optical isolation of controls
Emergency stop on all stages

Maintenance Schedule

Component	Frequency	Procedure
Electrodes	Monthly	Clean and measure erosion
Damping Resistors	Quarterly	Measure value and inductance
Voltage Distribution	Annually	Stage balance verification
Full System	Biennially	Complete calibration

Conclusion

The LQHCG 450KV-300pF Multiple Chopping Gap with its innovative three-stage 150kV modular design sets new benchmarks in high voltage testing technology. Delivering 450kV total rating with exceptional chopping time precision (σ<0.1μs) and 300pF capacity, this system is ideally suited for extra high voltage equipment testing and advanced research applications. The non-inductive 100Ω damping resistors and precise 30kV-385kV operational range ensure accurate, repeatable results across all standard test requirements. With proper maintenance and operation according to safety protocols, the LQHCG 450KV-300pF provides reliable performance for the most demanding high voltage testing challenges.

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<1000KV Range