Red Phase 4025D and Recoil 545

The Model 4025D Tunable Multimeter is a frequency-selective ammeter and voltmeter used to measure the magnitude and phase angles of signals produced by the Model 4024/4024B Injection Units. The voltmeter part of the 4025D allows touch and step voltages to be measured quickly and accurately, which is important for the safety of both the general public and utility personnel. The current input is used explicitly with a (Rogowski) Type 545 worm coil or a LEM~flex RR3020 AC probe.

The Rogowski coil and LEM current probe are optional accessories. These are very convenient current measuring devices that can simply be wrapped around current carrying structures. The ability to measure currents in various structures is vital in tracking earth currents during investigations. Utility engineers need an accurate picture of the earth currents flowing in substations, power stations and similar large installations when designing protection systems. The multimeter operates in the 40 – 69 Hz range, catering for both 50 Hz and 60 Hz power frequencies. The high quality of the multimeter’s filters allows it to be used at frequencies up to a limit of 1Hz from the power frequency and still reject power frequency interference. The Model 4025D is designed for portable use in the field — powered by an internal rechargeable battery.

Operation: Front LCD screen with push buttons.

Operating temperature range: 0 °C … +35 °C

Nominal temperature range: 18 °C … +28 °C

Storage temperature range: -30 °C … +60 °C

Battery life span: Lithium Ion Battery with 8 hours of battery life

Weight: 6kg

• The Red Phase 4025D with Recoil 545 can measure magnitudes and phase angles of signals across a frequency range of 40 to 69 Hz, ensuring versatile and precise measurements.
• It can measure touch and step voltages, which is crucial for safety assessments in public and utility spaces.
• It’s powered by an internal rechargeable battery that enhances its mobility for onsite testing.
• The model includes front panel LEDs that indicate error conditions and confirmation when target outputs are reached.
• The software supports automatic or manual ramping from zero to the maximum current in any tap setting, simplifying complex testing scenarios.

• Utility grid analysis — The Red Phase 4025D with the Recoil 545 is essential for utility engineers who must monitor and analyse earth currents in substations, power stations and other large installations. Accurate earth current measurements help design effective protection systems, ensuring safety and operational integrity.
• Safety compliance testing — The Red Phase 4025D is crucial for verifying that public and utility spaces meet safety regulations. Measuring touch and step voltages help prevent potential hazards, ensuring that environments are safe for both public and personnel.
• Electrical fault diagnosis — It can identify faults in electrical grids by measuring the magnitude and phase angles of signals, which is invaluable for maintaining the reliability of power distribution systems. This helps pinpoint the exact locations of issues for quicker resolution.

Enquire about the Red Phase 4025D and Recoil 545 for rent today

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Whether you need to hire for a day or longer, our custom rental plans make it a breeze. Submit your booking request to hire the Red Phase 4025D and Recoil 545 today, or reach out to us for more information.