Peak Voltmeter
LQpV2-1 Precision Peak Voltmeter for High-Voltage Testing
Advanced Voltage Measurement for AC Withstand Tests
Designed for high-voltage testing laboratories, the LQpV2-1 Peak Voltmeter provides accurate measurement of AC withstand test voltages with dual display modes: real effective value and peak/√2. Compliant with IEC 60060-2 standards, it features automatic flashover voltage recording and self-holding over-voltage capture for comprehensive test analysis.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Voltage Range | 0-500V (Peak or RMS) |
| Measurement Modes | Effective Value (RMS), Peak Value, Peak/√2 |
| Display Resolution | 4.5-digit Digital Display (kV readout) |
| Voltage Ratio Setting | 4-digit Switch (1:1 to 9999:1) |
| Accuracy Class | ≥ Class 1 (≤1% error) |
| Flashover Recording | Self-holding over-voltage value capture |
| Compliance Standard | IEC 60060-2 |
Core Measurement Capabilities
True Peak Voltage Measurement
Accurately captures peak voltages up to 500V input (equivalent to 5MV test voltage at 10,000:1 ratio) with ≤1% error. The peak/√2 mode directly correlates with RMS values for simplified interpretation.
Programmable Voltage Ratio
4-digit ratio switch (1-9999) enables direct kV readout of test voltages. When set to actual transformer ratio, eliminates calculation errors and provides direct high-voltage measurements.
Flashover Event Capture
Automatically holds and records the exact voltage value at flashover instant, with 10ms response time for reliable dielectric strength test analysis.
Measurement Workflow
Connect: Input terminals to test transformer secondary
Set Ratio: Configure voltage ratio switch to match transformer
Select Mode: Choose between Peak, Peak/√2 or RMS display
Test: Apply AC withstand voltage to test object
Record: Read actual test voltage directly in kV on display
Capture: Unit auto-holds flashover voltage value for analysis
Performance Advantages
| Feature | Industry Standard | LQpV2-1 |
|---|---|---|
| Accuracy | Class 2-3 (2-3%) | Class 1 (≤1%) |
| Response Time | 100-200ms | 10ms (flashover capture) |
| Voltage Ratio Range | Up to 1000:1 | Up to 9999:1 |
| Display Resolution | 3.5-digit | 4.5-digit |
Industrial Applications
High-Voltage Test Labs: AC withstand testing of transformers and bushings
Cable Manufacturing: Dielectric strength verification of power cables
Switchgear Testing: Routine withstand tests on circuit breakers
Insulator Validation: Flashover testing of ceramic/RTV insulators
Research & Development: Precision measurement in HV component development
Compliance & Safety Features
IEC 60060-2 Compliance: Meets international standards for HV testing
Overvoltage Protection: Withstands 120% of rated input continuously
Isolated Inputs: Double-insulated terminals for operator safety
EMI Shielding: Rejects electromagnetic interference up to 100dB
Transient Protection: Filters switching transients and noise
Technical Specifications Detail
| Parameter | Specification |
|---|---|
| Display Range | 0.000 - 999.99 kV (4.5-digit) |
| Input Impedance | ≥10MΩ |
| Sampling Rate | 10k samples/second |
| Operating Temperature | -10°C to 50°C |
| Power Supply | 110/220V AC ±10% |
| Calibration Interval | 24 months (NIST-traceable) |
