Editorial Technical Reference

Measurement Circuit (Voltmeter & Ammeter)

This page explains how Measurement Circuit (Voltmeter & Ammeter) is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A specialized electrical circuit within a high-voltage test module designed to accurately measure voltage and current parameters during testing operations.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Measurement Circuit (Voltmeter & Ammeter)

Definition
The Measurement Circuit (Voltmeter & Ammeter) is a critical subsystem of the High Voltage Test Module. Its primary role is to provide precise, real-time monitoring of electrical parameters—specifically voltage (via the voltmeter section) and current (via the ammeter section)—when the module is applying high-voltage stress to a device under test (DUT). This circuit ensures test accuracy, safety, and data integrity by converting high-voltage/current signals into measurable, low-level signals for display or data acquisition systems. The circuit is designed for integration into high-voltage test setups, offering a measurement range of 0–1000 V AC/DC for voltage and 0–10 A for current, with an accuracy class of ±0.5% per IEC 60051 for both parameters. It features an input impedance of ≥10 MΩ to minimize loading effects, operates over a frequency range of 45–65 Hz, and is rated for operating temperatures from -10 to 55 °C and storage temperatures from -25 to 70 °C (non-condensing). The relative humidity range is 5–95% non-condensing, and the ingress protection rating is IP54–IP65 per IEC 60529. The circuit requires a 24 V DC supply (±10%) with reverse polarity protection, consumes ≤5 W, and has compact dimensions of 120×80×60 mm (W×H×D) with a weight of ≤0.5 kg. Typical materials include a printed circuit board (PCB), precision metal film resistors, shunt resistors, insulating materials such as FR-4 or ceramic, and copper conductors. These components are selected to ensure reliable performance in high-voltage environments. The circuit is intended for use in electrical equipment manufacturing, particularly in test modules where accurate voltage and current measurement is essential. It is important to verify model-specific values and standards with the legal manufacturer or supplier before procurement or integration, as the listed parameters are reference ranges for typical applications.
Working Principle
The circuit employs precision voltage dividers for the voltmeter function and shunt resistors or current transformers for the ammeter function to scale down high-voltage and high-current signals to safe levels. These scaled signals are then processed by internal analog-to-digital converters (ADCs) or display drivers, which convert them into readable values on meters or digital readouts. The processed data can also be output for external data logging or control systems. This approach ensures accurate measurement while protecting the measurement electronics from damage.
Common Materials
Printed Circuit Board (PCB), Precision Resistors (Metal Film), Shunt Resistors, Insulating Materials (e.g., FR-4, Ceramic), Copper Conductors
Technical Parameters
ParameterTypical rangeNotes & selection driver
Measurement Range (Voltage)0–1000 V AC/DCCovers typical high-voltage test levels
Measurement Range (Current)0–10 ASuitable for most test applications
Accuracy (Voltage)±0.5 %Class 0.5 per IEC 60051
Accuracy (Current)±0.5 %Class 0.5 per IEC 60051
Input Impedance≥10 Minimizes loading effect
Frequency Range45–65 HzStandard power frequency
Operating Temperature-10–55 °CExtended range available
Storage Temperature-25–70 °CNon-condensing
Relative Humidity5–95 %Non-condensing
Ingress ProtectionIP54–IP65Dust and splash proofIEC 60529
Supply Voltage24 ±10% V DCReverse polarity protected
Power Consumption≤5 WLow power for safety
Dimensions (W×H×D)120×80×60 mmCompact module
Weight≤0.5 kgLightweight for easy integration

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Voltage Divider Network
    Steps down the high-voltage signal from the test output to a low, measurable voltage level for the voltmeter.
    Material: Precision Resistors, Insulating Housing
  • Current Shunt / CT
    Converts the high-current flow in the test circuit into a proportional, low-voltage signal for the ammeter.
    Material: Manganin/Constantan Alloy (Shunt), Ferrite Core (CT)
  • Signal Conditioning PCB
    Filters, amplifies, and isolates the scaled signals before they are sent to the display or ADC.
    Material: FR-4 PCB, Op-amps, Isolation Amplifiers
  • Display / Readout Interface
    Presents the measured voltage and current values, either via analog meters, digital displays, or data output ports.
    Material: LCD/LED Display, Analog Meter Movement, Connectors

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Measurement Circuit (Voltmeter & Ammeter).

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 1 atm (non-pressurized environment)
temperature: -40°C to +85°C
current range: 0 to 100A DC/AC RMS
voltage range: 0 to 1000V DC/AC peak
accuracy class: 0.5% of reading ±2 digits
frequency range: DC to 10kHz
Media Compatibility
✓ Dry air/nitrogen environments ✓ Transformer oil-filled chambers ✓ SF6 gas insulated systems
Unsuitable: Conductive or corrosive liquid immersion (e.g., saltwater, acids)
Sizing Data Required
  • Maximum expected voltage (V)
  • Maximum expected current (A)
  • Required measurement accuracy (% of reading)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Inaccurate Voltage Readings
Cause: Degraded internal components (e.g., resistors, capacitors) due to thermal stress, aging, or contamination affecting calibration and signal integrity.
Open or Shorted Circuit Connections
Cause: Loose, corroded, or damaged wiring/terminals from vibration, environmental exposure (moisture, chemicals), or mechanical wear disrupting electrical continuity.
Maintenance Indicators
  • Erratic or fluctuating readings (e.g., voltage/current values jumping or dropping unexpectedly)
  • Visible damage (e.g., cracked display, burnt smell, discolored components, or loose connections)
Engineering Tips
  • Implement regular calibration and verification against known standards to detect drift early and maintain accuracy, following manufacturer intervals or industry standards (e.g., annually).
  • Ensure proper environmental protection (e.g., use enclosures, avoid extreme temperatures/humidity) and secure mounting to minimize vibration, contamination, and physical stress on components.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use CE marking: Compliance with EU directives for electromagnetic compatibility (EMC) and low voltage (LVD)

Quoted from the published standard.

Manufacturing Precision
  • Voltage measurement accuracy: +/-0.5% of reading
  • Current measurement accuracy: +/-1.0% of full scale
Quality Inspection
  • Calibration verification against certified reference standards
  • Insulation resistance test at 500V DC

Manufacturers of Measurement Circuit (Voltmeter & Ammeter)

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Xindali Industries Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Supply Chain Compatible Machinery & Devices

Medium Voltage Switchgear Assembly Line

Automated production system for assembling medium voltage electrical switchgear.

Explore Specs →
Motor Terminal Block

A motor terminal block is a standardized electrical component that provides secure, insulated connection points for motor winding leads.

Explore Specs →
PLC Control System

A digital industrial computer control system that monitors inputs, makes decisions based on a custom program, and controls outputs to automate industrial processes.

Explore Specs →
Control Panel

A centralized interface for monitoring and controlling industrial equipment and processes

Explore Specs →

Frequently Asked Questions

What is the measurement range of this circuit?

The voltage measurement range is 0–1000 V AC/DC, and the current measurement range is 0–10 A. These are reference ranges; confirm the exact range for your specific model with the manufacturer.

What accuracy can be expected?

The accuracy is ±0.5% for both voltage and current, corresponding to Class 0.5 per IEC 60051. This is a reference value; verify the actual accuracy for your application.

What are the environmental operating limits?

The circuit operates in temperatures from -10 to 55 °C, with storage from -25 to 70 °C, and relative humidity 5–95% non-condensing. The ingress protection is IP54–IP65 per IEC 60529. Always check the datasheet for your specific model.

How is the circuit powered?

It requires a 24 V DC supply with ±10% tolerance and has reverse polarity protection. Power consumption is ≤5 W. Confirm the supply requirements with the manufacturer for your unit.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.
Buyer enquiry

Request manufacturing insight for Measurement Circuit (Voltmeter & Ammeter)

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes
Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here
We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman
CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim
A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

Your business information is used only to process this request.

Thank you! Your message has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at contact@cnfx.com.

Need to Manufacture Measurement Circuit (Voltmeter & Ammeter)?

Compare manufacturer profiles with relevant product and process capability.

Previous Product
Wire Tensioning System
Last Product
Get QuotesChat