Advanced HV Instrument for Industrial Power Systems

Engineered for 36kV applications, the LQHVF combines precision measurement with exceptional flexibility. The 1000pF capacitance and scalable design enable:

• Standard 36kV measurements in single-stage configuration

• Extended 72kV capability in dual-stage series connection

• Precise voltage division with ≤±1% accuracy

• Sensitive partial discharge detection (<5pC)

Technical Specifications

Scalable Measurement Configurations

Single-Stage Operation

Voltage Range: Up to 36kV

Connection: Direct HV corona-free terminal

Measurement: Via special lead-wire to variable frequency source

Setup Time: <5 minutes

Dual-Stage Series Connection

Voltage Range: Up to 72kV

Configuration: Cascaded HV arms

Measurement: Differential measurement technique

Extended Capacity: +100%

HV Connection: Corona-free terminals with scalable interfaces prevent RF interference during measurements.

Innovative Structural Design

Removable Aluminum Corona Rings

High-strength alloy optimized for transport

40% lighter than steel alternatives

Dual-Base System

p100/p180 options for surface adaptability

Stability on uneven terrain

Modular Construction

Quick-disconnect HV arm, V arm, and base

Field assembly in 8 minutes

ONAN Cooling

Natural oil/air convection system

Thermal stability during operation

Measurement System Features

• Special Measuring Lead-Wire: Shielded connection to variable frequency power source

• Corona-Free HV Connection: Special electrode geometry eliminates surface discharge

• Scalable Interface: Standardized connectors for series configuration

• Automatic Discharge: Integrated 500kΩ bleeder resistors

Compliance & Applications

Standards Compliance: IEC 60270:2000, IEEE 4-2013, EN 60060-1:2010

Key Applications:

• Factory testing of 36kV switchgear and transformers

• On-line PD monitoring in industrial substations

• Extended voltage testing up to 72kV

• Power quality analysis in renewable energy systems

• High-voltage research laboratories

Operational Protocol

Single-Stage Setup

1. Select appropriate base (p100/p180)

2. Assemble components

3. Connect measuring lead to VF source

4. Apply HV via corona-free terminal

Dual-Stage Setup

1. Connect two units in series

2. Synchronize measurement systems

3. Use differential measurement technique

4. Apply HV across the series chain

Pro Tip: For dual-stage operation, use IRIG-B time synchronization between measurement devices for phase-accurate readings

Transport & Handling Advantages

• Removable Corona Rings: Reduce package size by 35%

• Lightweight Design: 15kg total weight with carrying handles

• Protected Connectors: Dust caps for all interfaces

• Crush-Resistant Packaging: Custom foam inserts for components

Field Benefit: 50% faster deployment than fixed-structure dividers

Why This System Stands Out

Measurement Flexibility

Single/Dual-stage configurations

Transport Optimization

Removable aluminum components

Safety Assurance

40kV withstand voltage rating

Precision

≤±1% accuracy at 50Hz