VARIABLE VOLTAGE / VARIABLE FREQUENCY SOURCE

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The Variable Voltage / Variable Frequency Source from Prism Test & Measure Pvt. Ltd. is a precision instrument designed to generate adjustable AC voltage and frequency outputs for testing and calibration purposes. It is widely used in calibration laboratories, electrical testing facilities, and industrial maintenance departments for verifying voltage meters, frequency meters, protection relays, and other electrical measuring instruments.

The unit allows precise adjustment of voltage using coarse and fine multi-turn potentiometers and frequency control using a multi-turn potentiometer, ensuring stable and reliable output performance for laboratory and industrial applications.

Key Features

• voltage setting by coarse and fine multi-turn potentiometers
• frequency setting using multi-turn potentiometer
• digital meters to indicate output voltage and current
• 4 digit display to indicate frequency
• stable and reliable output performance
• suitable for calibration and electrical testing applications
• overload and short circuit protection

Technical Specifications

Parameter Specification
Input Power Supply 230 VAC ±10% @ 50 Hz (Single Phase)
415 VAC ±10% @ 50 Hz (Three Phase)
Output Voltage Range 30 to 300 V (Single Phase)
50 to 440 V Phase to Phase (Three Phase)
Output Current 10 A (or as per customer requirement)
Frequency Range 45 Hz to 60 Hz
Total Harmonic 1.5% for precision voltage & current source
3.5% for power source
Stability 0.1% (after warm-up)
Meters 3½ or 4½ digit 7-segment display for voltage
4 digit 7-segment display for frequency
Accuracy 1.5% + 5 digits for voltage
±0.2 Hz for frequency
Controls voltage setting by coarse & fine multi-turn potentiometers
frequency setting by multi-turn potentiometer
Protection overload and short circuit protection

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