1. Summary
TH0780 is a high-precision power frequency voltage converter with built-in multi-position precision voltage transformers, which can convert large power frequency voltages into 1V output, and realize precise measurement of power frequency voltage or traceable calibration of voltage sources.
2. Feature
• U1 Nominal Input: 60 V ~ 480 V
• U2 Nominal Output: 1V
• Working Frequency: 45 Hz ~ 65 Hz
• Ratio Typical Uncertainty: 5 ppm
• Select different ratios by touch on the LCD screen.
• The voltage output can be turned off or on with one key.
3. Application
• Power Frequency Voltage Precision Measurement
• Power Frequency Voltage Standard Source Traceability
☆ Power Frequency Voltage Precision Measurement |
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• Combined with a precision voltmeter (such as TH0190) to build a precision current measurement system. • Measure power frequency voltage or calibrate power frequency voltage source. |
☆ Power Frequency Voltage Standard Source Traceability |
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• The secondary voltage output by TH0780 is compared with the AC voltage reference through the zero voltage meter. • The ultra-high calibration uncertainty realizes the precise traceability of the power frequency voltage standard source. |
Primary Nominal Input Voltage | Secondary Nominal Output Voltage | Ratio Typical Uncertainty(k=2) |
60 V | 1 V | 5 ppm |
120 V | 1 V | 5 ppm |
240 V | 1 V | 5 ppm |
480 V | 1 V | 5 ppm |
5. General Specifications
Power Supply | AC ( 220 ± 22 ) V，( 50 ± 2 ) Hz |
Working Environment | 0 °C ~ 40 °C，20% R·H ~ 80% R·H，No condensation. |
Storage Environment | -10 °C ~ 50 °C，10% R·H ~ 90% R·H，No condensation. |
Dimensions | 483 mm (W) × 400 mm (D) × 177.8 mm (H)（without handle） |
Weight | About 23.5 kg |
Communication Interface | RS232×1、USB×1、LAN×1 |
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