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.

Metrel MI 3325

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