Martindale PD690S 690V AC Proving Unit
The Martindale PD690S 690V AC Proving Unit provides a fast and simple way to prove that voltage indicators, multimeters and test lamps are working correctly. It supplies the full selected test voltage at once, allowing the connected instrument to be checked without waiting for the voltage to rise. Its maximum output of 690V AC makes it suitable for higher-voltage commercial and industrial work.
Safe electrical working requires a voltage indicator to be proved with a suitable device before and after use. The Martindale PD690S 690V AC Proving Unit supports this process by providing nominal outputs of 50V, 120V, 230V, 440V or 690V. These voltage levels also make it useful for checking devices with different indicator thresholds.
An over-moulded, low-profile case gives the unit a compact and practical form. Colour-coded voltage indicators aid identification, while high-voltage and low-battery LEDs provide clear status information. The Martindale PD690S 690V AC Proving Unit is compatible with both high and low impedance voltage indicators, test lamps and meters.
Key Benefits
- Delivers the selected full test voltage immediately for quick proving.
- Supports checks before and after using a voltage indicator.
- Provides five nominal voltage levels for testing different indicator thresholds.
- Handles proving requirements up to 690V AC.
- Works with both high and low impedance test devices.
- Uses colour-coded indicators to make voltage levels easier to identify.
- Includes a high-voltage LED for clear operating indication.
- Includes a low-battery LED to show when battery attention is required.
- Uses a low-profile, over-moulded case for straightforward handling.
Common Applications
Martindale PD690S 690V AC Proving Unit is suitable for a range of testing, maintenance and inspection tasks, including:
- Proving voltage indicators before use.
- Proving voltage indicators after use.
- Checking multimeter operation.
- Checking electrical test lamps.
- Testing devices with voltage thresholds up to 690V.
- Commercial electrical testing work.
- Industrial electrical testing work.
- Higher-voltage three-phase applications.
Why Choose This Model?
The PD690S provides a higher maximum output than the PD440S while retaining compatibility with high and low impedance devices. Buyers who need CALCHECK resistance values or multiple high-voltage LEDs should consider the PD690SX instead.
