T&R 50ADM-P 50 Amp Digital SCITS with Output Leads in Pelicase

The T&R 50ADM-P is a compact secondary current injection test set (SCITS) that comes with output leads in Pelicase for reliable testing of protective relays, circuit breakers, and related protection and control components. It provides injection currents from 1 mA up to 50 A, with up to 18 V available on the main outputs, making it suitable for commissioning, maintenance, and diagnostic work where accurate, repeatable results are required. True RMS metering with single-cycle capture supports confident verification of relay operation, protection settings, and detailed circuit-breaker timing tests.

With its comprehensive timing functionality, the 50ADM-P provides automatic range selection for trip, reset, and reclose timing, with resolution down to 1 ms. This level of precision is essential when validating protective devices and supporting compliance with operational and safety requirements. The unit also includes a flexible auxiliary AC output with adjustable phase and frequency, which can be used at up to 260 V for voltage relay testing or up to 10 A for current relay testing, ideal for directional and phase-sensitive protection checks.

The 50ADM-P has an integrated solid-state current control system that improves operational safety and reliability by automatically shutting down during a trip event. This helps protect both the device under test and the injection test set during intensive testing procedures. An intuitive digital interface keeps operation straightforward, while the separate control and loading units create a streamlined setup that is practical for both site and workshop use. As with any high-current injection equipment, appropriate earthing/grounding and safe lead management are important when operating in substation environments.

Two USB host sockets simplify test data management and reporting. Results can be stored to a USB memory key in spreadsheet format for later analysis and record keeping, and a USB keyboard can be connected to add comments against each stored result. Waveform graphics and harmonic/THD analysis results can also be saved, supporting detailed diagnostics and professional reporting.

Supplied with output leads in a durable Pelicase, the 50ADM-P is protected in harsh working environments. It is well suited to applications such as distance protection testing (phase at a time), volts-per-hertz (V/Hz) testing, check synchronisation, under/over-voltage testing, directional power checks, and overcurrent/earth-fault relay testing, among others.

Part number: 50ADM-P

Key Features

• Injection output: 1 mA to 50 A (0–50 A range), with up to 18 V available on the main outputs
• True RMS metering with single-cycle capture
• Multi-function auto-range timing system for trip/reset/reclose timing (down to 1 ms resolution)
• Flexible auxiliary AC output with adjustable frequency and phase shift (up to 260 V for voltage relays or up to 10 A for current relays)
• Variable stabilised auxiliary DC output: 12–220 VDC with current limit (for powering the relay under test)
• Auxiliary metering input: V, f, φ, Z, P, S, PF, CT ratio, and harmonics/THD
• Solid-state current control with automatic shutdown on trip
• USB host ports for results storage to a USB memory key (spreadsheet), plus waveform and harmonic/THD recording
• USB keyboard interface for adding notes/comments (USB printer interface supported on some configurations)
• Automatic mains voltage selection