MFPO 9760 Current Transformer and Pulse Generator

MFPO 9760 – Current Transformer and Pulse Generator

High-current source for power-frequency magnetic field immunity testing according to IEC 61000-4-8, -4-9, and -4-10.

The MFPO 9760 is a high-power current transformer designed to drive the FESP 5410-1 1 m square induction coil at the typical mains frequencies of 50/60 Hz. Together, they form a robust solution for generating strong, well-defined magnetic fields for EMC immunity testing in accordance with industrial power-frequency and surge/impulse magnetic field standards. 

When used with the FESP 5410-1, the MFPO 9760 can produce short-term fields above 1000 A/m and continuous fields up to 360 A/m at the coil center, making it suitable for demanding qualification of power electronics, industrial controllers, traction/rail systems, and other sensitive equipment. 

Key Features

• High-current magnetic field source

  • Drives the FESP 5410-1 coil with currents up to 1200 A (≤ 5 s), 600 A (≤ 5 min) and 400 A continuous, enabling test levels required by IEC 61000-4-8/-4-9/-4-10.

• Power-frequency and pulsed operation

  • Optimized for 50/60 Hz operation; the low-inductance, single-turn coil allows fast transitions and pulsed or oscillatory magnetic field waveforms for surge/impulse testing. 

• Integrated pulse generator

  • Built-in timing electronics provide adjustable ON intervals from approximately 0.5 s to 5 s.

  • Longer or custom intervals can be set manually by holding the start button or via a remote control input. 

• High field strength capability

  • With FESP 5410-1, achieves > 1000 A/m (short-time) and 360 A/m continuous at the coil center, covering and exceeding typical industrial test levels. 

• Optimized for IEC magnetic field immunity standards

  • Designed specifically for tests according to IEC 61000-4-8, IEC 61000-4-9, and IEC 61000-4-10 (and aligned national standards such as GB/T 17626.8).

• Robust, lab-grade construction

  • Heavy-duty cabinet with high-current buswork and proper thermal design for continuous operation at rated levels.

  • Designed for long-term use in EMC test labs and certification environments. 

Typical Applications

• Power-frequency magnetic field immunity testing per IEC 61000-4-8

• Pulsed or transient magnetic field immunity per IEC 61000-4-9

• Oscillatory magnetic field tests per IEC 61000-4-10

• Evaluation of industrial control systems, power converters, UPS systems, and switchgear

• Testing of sensitive instrumentation, protection relays, and safety systems exposed to strong mains-related magnetic fields 

System Configuration

A typical MFPO 9760 system includes:

• MFPO 9760 Current Transformer and Pulse Generator

• FESP 5410-1 1 m Square Induction Coil for generating the magnetic field at the EUT

• Appropriate high-current cabling and mounting hardware (coil on non-conductive mast or support structure) 

Two FESP 5410-1 coils can be combined as a Helmholtz pair to increase field strength and improve field uniformity over a larger test volume, particularly for bulky EUTs or multi-cabinet systems. 

Technical Specifications – MFPO 9760 with FESP 5410-1

Ordering Information

Model: MFPO 9760 – Current Transformer and Pulse Generator
Recommended accessory:

• FESP 5410-1 – 1 m Square Induction Coil (and optional second coil for Helmholtz configuration)
• AM 5410-1  Mounting kit for the FESP 5410-1/ MFPO 9760, composed by:
• - aluminum base with wheels for the MFPO 9760;
• - glass-fiber mast;
• - adapter to mount the FESP 5410-1 on the fiberglass mast.

For pricing, lead time, and configuration guidance (including coil mounting, cable lengths, and target field levels for your specific standard/test plan), please contact Absolute EMC.