There are five distinct leakage current test types for medical devices required under IEC 60601 — earth leakage, enclosure leakage, patient leakage, patient auxiliary leakage, and mains on applied parts (MOAP) leakage. Each requires specific test points and must be evaluated under both normal and single-fault conditions, adding significant complexity that Ikonix’s MedTEST system is designed to simplify.
The medical device industry has continued to flourish, driven in part by the rescheduling and prioritization of non-essential surgeries, testing, and treatment postponed during the pandemic. According to Fortune Business Insights, the industry is projected to achieve a Compound Annual Growth Rate (CAGR) of 5.5% by 2029. To ensure patient and operator safety, medical devices adhere to stringent standards like IEC 60601, which exceed requirements for other electronic devices — and one of the most complex requirements involves the various leakage current test types for medical devices.
The 5 Leakage Current Test Types for Medical Devices
Unlike common leakage current tests for standard electronic devices, medical devices require distinct test types to simulate different safety conditions:
| Test Type | Measured Between |
|---|---|
| Earth Leakage Current | Protective earth (PE) terminal and ground |
| Enclosure Leakage Current (Touch Current) | Enclosure and ground |
| Patient Leakage Current | Applied part and protective earth (PE) |
| Patient Auxiliary Leakage Current | Between different applied parts |
| Mains on Applied Parts (MOAP) Leakage Current | Applied part and the secondary side of the transformer |
Each of these leakage current test types for medical devices must be conducted under both normal conditions and varying single-fault conditions — such as open neutral, reverse polarity, and open ground — multiplying the total number of required test combinations.
Simplifying Testing Complexity with MedTEST
The complexity introduced by these five leakage current test types for medical devices poses challenges even for experienced operators. Changing cables at each step prolongs testing time and hampers efficiency, and connection errors at any test point can significantly impact accuracy — resulting in costly retesting.
To address this, Ikonix worked closely with leading medical device companies to develop MedTEST, an all-in-one system solution. MedTEST addresses complex cable connection concerns through fully automated multipoint sequential testing, combining the Associated Research OMNIA® II Multi-Function Electrical Safety Tester, SC6540 Multiplexers, and an EEC 8500 Series Programmable AC Power Source.
Electrical Safety Tester
OMNIA® II integrates AC/DC Hipot (ACW/DCW), insulation resistance (IR), AC ground bond (AC GB), ground continuity (GC), touch current (TC), and run testing (RT) in a single tester.
Multiplexers
SC6540 enables automated multi-point testing across up to 80 points.
Leakage Current Tester
The system can be enhanced with the LINECHEK® II Leakage Current Tester 620L to accommodate continuous currents up to 40A — ideal for applications requiring current exceeding 16A.
AC Power Source
The 8500 Series Programmable AC Power Source delivers power to the Device Under Test (DUT), with ratings from 500 VA to 6 kVA.
By leveraging MedTEST, operators streamline the process of running all five leakage current test types for medical devices, improving both efficiency and result accuracy.
Ikonix is a leading provider of medical device electrical safety testing solutions, offering MedTEST alongside Application Consulting services aligned with the IEC 60601-1 3rd Edition standard. For inquiries, contact our sales representative today.
Key Takeaways
- There are 5 distinct leakage current test types for medical devices: earth, enclosure, patient, patient auxiliary, and mains on applied parts (MOAP).
- Each test type must be evaluated under normal and single-fault conditions, multiplying the total required test combinations.
- MedTEST combines OMNIA® II, SC6540 Multiplexers, and the 8500 Series AC Power Source into one automated multipoint testing solution.
FAQ
What are the leakage current test types for medical devices?
There are five: earth leakage current, enclosure (touch current) leakage, patient leakage current, patient auxiliary leakage current, and mains on applied parts (MOAP) leakage current.
What is mains on applied parts (MOAP) leakage current testing?
It’s a leakage current test measured between a device’s applied part and the secondary transformer, simulating a fault scenario where mains voltage reaches the applied part.
Why does testing all leakage current test types take so long manually?
Changing test cables at each step for every test type and fault condition combination prolongs testing time and increases the risk of connection errors that require retesting.
What does MedTEST include?
MedTEST combines the OMNIA® II Multi-Function Electrical Safety Tester, SC6540 Multiplexers, and the EEC 8500 Series Programmable AC Power Source into one automated multipoint testing system.
