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LQ607 (Standard Voltage Divider AC/DC High Voltage Series)

Portable high-voltage divider for AC/DC field measurements. Features sealed IP67 construction, ±0.07% accuracy, dual-range outputs. Ideal for utilities & labs.


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Product Details

Product Tags


LQ607 series AC and DC voltage divider is a special instrument used for field measurement, which can measure both DC    and AC high voltage. The whole equipment is composed of AC and DC voltage divider and measuring instrument. Ac and    DC divider adopts balanced equipotential shielding structure, and uses high-quality electronic components inside the com-   pletely sealed insulated cylinder, so that the whole device has the characteristics of accurate testing, good linearity, stable    performance, reasonable structure, easy to carry, simple operation, intuitive display, etc., so it is an ideal instrument for field measurement.

Key Features & Benefits

FeatureTechnical AdvantageUser Impact
Balanced Equipotential ShieldingEliminates stray capacitance errors±0.05% linearity at 1000kV
Fully Sealed Insulated CylinderIP67 protection (dust/water)Reliable operation in rain/snow
Dual AC/DC Measurement0.1Hz–1kHz bandwidthSingle instrument for all HV tests
High-Quality ComponentsMilitary-grade resistors/capacitorsDrift <10ppm/year
Intuitive DisplayDual LCDs (kV + kV RMS)Instant AC/DC voltage visualization
Portable Design40% lighter than conventional dividersOne-person deployment in 5 minutes

Technical Specifications

ParameterAC ModelDC ModelCombo Series
Voltage Range10kV–1200kV RMS±10kV–±1800kV10kV–1500kV AC/DC
Accuracy±0.1%±0.05%±0.07%
Bandwidth0.1Hz–1kHzDC – 500HzDC – 1kHz
Temperature Stability±5ppm/°C±2ppm/°C±3ppm/°C
Output Signal1V/kV or 10V/kV (BNC)IdenticalSwitchable AC/DC output
Safety StandardIEC 61010-1 CAT IV 1500VIdenticalIdentical

System Components

  1. HV Divider Column

    • Epoxy-sealed capacitive-resistive network

    • Silicone rubber weathershields for pollution resistance

  2. Base Instrument

    • True RMS measurement (AC)

    • Ripple rejection >80dB (DC)

  3. Calibration Kit

    • NIST-traceable reference capacitor

    • Field verification jig


Critical Applications

IndustryMeasurement ScenarioStandard
Utility Grids500kV GIS commissioning testsIEC 60060-2
HVDC StationsValve hall DC stress testsIEC 61958
Transformer OEMsLightning impulse calibrationIEEE 4-2013
RenewablesOffshore wind farm cable testingIEC 60840
Research LabsDielectric loss measurementsASTM D150

Why Field Teams Prefer This Divider

"Testing ±800kV HVDC line in Norway:

  • -25°C operation without accuracy drift

  • Replaced 3 instruments (DC divider + AC divider + peak meter)

  • Passed KEMA validation with 0.03% deviation"*
    – HV Testing Crew, Statnett


Competitive Advantages

Conventional DividersThis Series
Separate AC/DC unitsSingle dual-purpose system
Exposed componentsHermetically sealed construction
Manual calibrationAuto-temp compensation
Limited to 300kV1500kV AC/DC capability
2+ hour setup5-minute deployment


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