<100kV Range

LQHVF 50kV/500pF Capacitive Voltage Divider & Coupling Capacitor - Precision EHV Instrument

Ultra-efficient LQHVF 50kV/500pF dual-function instrument with <0.2% dielectric loss, <10pC PD system performance & 60Hz optimization. Designed for critical EHV applications.

US$ 2,015.00
Lead time: 30 days

Send email to us

>>>WhatsApp Communication<<<

Product Details

Product Tags

LQHVF 50kV/500pF Capacitive Voltage Divider & Coupling Capacitor

Ultra-Efficient Design: Industry-leading <0.2% dielectric loss for precision measurements in 60Hz EHV systems

Precision Instrument for 60Hz Power Systems

Engineered for 50kV/60Hz applications, the LQHVF delivers laboratory-grade accuracy with field reliability. The optimized 500pF capacitance provides:

Ultra-low dielectric dissipation (<0.2%)
Complete test system PD detection (<10pC)
Precise voltage measurement with ≤±1% accuracy
Thermal stability with ONAN cooling

50kV

Technical Specifications

Parameter	Specification	Performance Advantage
Rated Voltage	50kV	EHV system compatibility
Frequency	60Hz	North American power standard
Capacitance	500pF	Optimal balance for PD coupling & measurement
Voltage Ratio	1000:1	50V output at 50kV input
Dielectric Loss	<0.2%	Industry-leading insulation efficiency
Partial Discharge	<10pC @ 100% UH	Complete test system performance (IEC 60270)
Accuracy	≤±1%	Meets IEEE 4-2013 standards
Operating Time	60min @ 50kV	Full-power diagnostic capability

Dielectric Efficiency Advantage

The <0.2% dielectric loss represents a 60% improvement over standard dividers, enabling:

More accurate power factor measurements
Reduced thermal stress during operation
Enhanced measurement sensitivity
Long-term insulation stability

Complete PD Test System Performance

System Approach: The <10pC specification applies to the entire measurement chain including coupling capacitor, measurement impedance, and PD analyzer

Calibration Requirements:

Verify system with calibrated pulse injector
Use NIST-traceable calibration sources
Perform quarterly system checks per IEC 60270
Maintain measurement cables ≤1.5m

Modular Structural Design

Corona Rings

Aluminum alloy

Removable design

Ly Arm

Measurement interface

BNC output

Hy Arm

High-voltage terminal

50kV rated

Removable Base

Stabilized platform

Leveling feet

Oil-Immersed Construction

High-grade mineral oil with dielectric strength >60kV/mm

Benefit: Enhanced thermal management and arc suppression

Quick-Disconnect System

Tool-free assembly in 10 minutes

Benefit: Rapid field deployment and maintenance

Thermal Management System

ONAN Cooling: Oil Natural Air Natural convection
Thermal Performance: <45°C rise during 60-min operation at 50kV
Operating Protocol:

60 minutes continuous at 50kV (100% UH)
Recommended 60-minute cooling period

Cooling Requirements: Maintain 25cm air clearance around unit

Compliance & Applications

Standards Compliance: IEC 60270:2000 (PD), IEEE 4-2013 (Testing), ANSI C57.13 (Accuracy)

Critical Applications:

Factory acceptance testing of 50kV switchgear
On-line PD monitoring in 60Hz substations
Dielectric loss measurement in power transformers
High-voltage research at 60Hz
Calibration of protective relays

Operational Protocol

Preparation

Assemble components on stable surface
Connect Ly-arm to measurement device
Ground base with ≥12mm² cable

Energization

Ramp voltage gradually (≤5kV/s)
Operate at 100% UH (50kV)
Max 60 minutes continuous

PD Measurement

Connect to PD analyzer via Ly-arm
Calibrate complete system
Use double-shielded coaxial cables

Shutdown

De-energize system
Wait 10 minutes for discharge
Disassemble components

Safety Note: The "100% UH, 100% IH" operating condition refers to 50kV at maximum continuous current rating

Why This Instrument?

Dielectric Efficiency

<0.2% loss for precise measurements

System Integration

<10pC PD system performance

Frequency Optimized

Designed for 60Hz power systems

Thermal Resilience

ONAN cooling maintains stability