Description

Metrel MI 3325 MultiServicer XD

Multifunction Industrial Safety Tester

The Metrel MI 3325 MultiServicer XD is a professional‑grade, multifunctional electrical safety tester designed for comprehensive testing, inspection, and safety verification of electrical machines, switchgear, portable appliances, and industrial installations. It represents a robust successor to the earlier MI 3321 model with a modernized platform featuring advanced user interaction and automated test sequencing.

Core Purpose & Application

This instrument is built for environments where ruggedness, reliability, and multifunction capability are essential. Typical applications include:

• Safety testing of factory machinery and automation equipment

• Inspection and periodic testing of industrial electrical installations and control gear

• Verification of portable electrical appliances

• Assessment of arc welding equipment safety (with optional adapter support)

• Production line and preventive maintenance testing programs

User Interface & Ease of Operation

• 4.3‑inch high-resolution color touch-screen display with intuitive menus and integrated help screens for on-site guidance

• Dual operation modes: use the touch screen or the physical keypad according to preference

• AUTOSEQUENCE functionality — predefined test sequences that reduce user setup time and ensure repeatable, systematic testing

High-Performance Measurement Capabilities

The MI 3325 supports a wide array of electrical measurement and safety test functions, including:

Safety & Installation Tests

• Continuity (2‑wire & 4‑wire) testing with selectable currents (0.2 A, 4 A, 10 A, 25 A) and voltage drop analysis

• High Voltage (HV) AC withstand testing, programmable from 100 V up to 5 000 V to verify insulation strength

• Insulation resistance measurement (Riso/Riso‑S) with DC test voltages up to 1 000 V

• Fault Loop, Line & Prospective Short‑Circuit Current tests (Z loop, Z line including RCD‑influenced measurements)

• Substitution and differential leakage current, touch/PE leakage current measurement

• Polarity verification and phase rotation detection

• Voltage, frequency, and power quality metrics including apparent, active and reactive power, power factor, and harmonics

• Varistor and discharge time testing

RCD & Functional Testing

• Full support for Residual Current Device (RCD) testing including trip current (I∆n), trip time (t), and operating voltage (Uc) for types A, AC, B, B+, and F

• Automated RCD and impedance test routines (“RCD AUTO”, “Z AUTO”) to streamline safety compliance testing

Communication & Data Management

• Built-in communication interfaces include USB, RS‑232, Ethernet, and Bluetooth, enabling remote control, data upload/download, and integration with PC software

• Large memory capacity via expandable microSD card (8 GB standard, up to 32 GB supported) for storing test results, sequences, and reports

• Compatible with PC software for professional test structuring, custom auto sequences, reporting, and data archiving

Design & Build

• Designed for multi-system testing on TT, TN, IT, and 115 V supply networks

• Real-time monitoring of all three supply voltages in three-phase systems

• Built-in fuse tables automatically interpret and evaluate measured loop/line values

• Durable construction suitable for industrial and field environments

Typical Accessories (Standard Set)

Depending on the vendor or set ordered, the instrument is typically supplied with:

• HV test leads and probes

• Continuity and IEC test cables

• Residual voltage and plug test leads

• Crocodile clips and connection leads

• RS‑232 & USB cables

• Calibration certificate and instruction manual

• Protective storage bag

• PC software (often included or available for free download)

Standards & Compliance

The MI 3325 is engineered to meet international safety and performance standards relevant to electrical safety testing, including IEC, EN, and VDE series where applicable for machinery, switchgear, and appliance testing.

The Metrel MI 3325 MultiServicer XD is an advanced all-in-one electrical safety and compliance tester that brings together high-precision measurement, rich functionality, automated testing workflows, and extensive data management. It is ideal for professional technicians working in industrial safety, maintenance, commissioning, and inspection roles requiring dependable and comprehensive electrical testing capabilities.