Leakage Current Test Equipment
ED&D leakage current test equipment supports repeatable electrical safety leakage measurements in laboratories, production-line environments, field testing, and medical electrical safety workflows. The LT-15, LT-30HC, LT-601, LT-601HC, LT-952, LT-952HC, and AVO-LT1 support leakage current measurements used in programs associated with IEC, UL, CSA, and EN product safety standards.
Fast Operator Workflow
Front-panel controls and straightforward switching support efficient leakage current testing in routine lab and production workflows.
True RMS on Applicable Models
Select models measure both sinusoidal and non-sinusoidal waveforms, which is especially important for products using switch-mode power supplies.
From General Product Safety to Medical Testing
Choose standard LT models for routine leakage current testing or the LT-601 family for medical-oriented leakage measurement workflows.
Let us know which standards you work to, DUT current requirements, whether you need True RMS capability, and whether your application is medical or non-medical.
Leakage Current Testing for Electrical Safety Programs
A leakage current tester is used to measure unintended current flow from a product under test to ground, to accessible conductive surfaces, or between patient connections, depending on the product category, measurement network, and applicable safety standard. These instruments are commonly used in electrical safety laboratories, production quality testing, field verification, and medical device test programs.
ED&D leakage current test equipment is designed for repeatable operation with front-panel controls, product ground switching on applicable models, automatic receptacle disconnect in 240V mode on applicable models, universal receptacle support on applicable models, and True RMS leakage current measurement on applicable models. This is especially important when testing products with switch-mode power supplies, which can generate non-sinusoidal leakage current waveforms.
The product family includes general-purpose leakage current testers for routine lab and production use, medical-oriented models for patient-related measurement paths, and an applied voltage option for specialized IEC 60601-related workflows.
These models support programs associated with IEC 60335, IEC 60601, IEC 60950, IEC 61010, UL 60950, UL 1703, CSA 950, and EN 61010. Where noted below, individual model sections call out standards directly referenced for that product.
Important technical note: CE is not a leakage current test standard by itself. It is a regulatory marking framework. The more technically accurate wording is that these instruments support leakage current measurements used in programs based on specific IEC, EN, UL, and CSA safety standards.
Key Features Across the Leakage Current Product Family
- Digital leakage current testing for laboratory, production-line, field, and medical workflows
- Fast front-panel operator workflow
- Product ground switching on applicable models
- Automatic front receptacle disconnect in 240V mode on applicable models
- Universal receptacle support on applicable models
- True RMS measurement on applicable models
- Model-specific body impedance networks for standards-based testing
- Configurations for ground conductor, surface-to-ground, patient-to-ground, and patient-to-patient measurements depending on model
- Accessory options for cords, leads, and DUT connection support
LT-15 Digital Leakage Current Tester
The ED&D LT-15 is a digital leakage current tester designed for laboratory, production-line, and field testing where standards-based leakage current measurements are required. It is configured for 100–120 / 200–240 VAC operation at 15 A and supports multiple leakage current measurement paths.
Product Details
- Input / output ratings: 100–120 / 200–240 VAC, 15 A, 50–60 Hz
- Testing tolerance: 90–132 / 180–264 VAC
- Leakage current can be measured through the product power cord ground conductor
- Leakage current can be measured from surface-to-line / line-to-line or ground / surface-to-surface, depending on setup
- Features product ground switching when not measuring leakage
- Automatic front receptacle disconnect when configured in 240V mode
- 3.5 in. digital LCD display
Measurement ranges: 2 mA / resolution 1.0 µA and 20 mA / resolution 10.0 µA with ±1% full-scale accuracy.
Body impedance circuit: 1500 Ω, 1% resistance shunted by 0.15 µF, 1% capacitance.
Standards note: this model is positioned for testing associated with UL, IEC, CSA, and EN requirements. Final suitability depends on the exact measurement network and test method required by the governing standard.
LT-15 Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Input / Output Ratings | 100–120 / 200–240 VAC, 15 A, 50–60 Hz | Dimensions | 13.25 in. W x 11.5 in. D x 5.5 in. H |
| Testing Tolerance | 90–132 / 180–264 VAC | Weight | 9 lbs. |
| Measurement Ranges | 2 mA / 1.0 µA resolution; 20 mA / 10.0 µA resolution | Accuracy | ±1% full scale |
| Body Impedance Circuit | 1500 Ω shunted by 0.15 µF | Display | 3.5 in. digital LCD display |
LT-30HC Digital Leakage Current Tester
The ED&D LT-30HC is a digital leakage current tester intended for applications that require the same general leakage current testing approach as the LT-15, but with higher DUT current capacity. It is configured for 100–120 / 200–240 VAC operation at 30 A.
Product Details
- Input / output ratings: 100–120 / 200–240 VAC, 30 A, 50–60 Hz
- Testing tolerance: 90–132 / 180–264 VAC
- Leakage current can be measured through the product power cord ground conductor
- Leakage current can be measured from surface-to-line / line-to-line or ground / surface-to-surface, depending on setup
- Features product ground switching when not measuring leakage
- Automatic front receptacle disconnect when configured in 240V mode
- 3.5 in. digital LCD display
Measurement ranges: 2 mA / resolution 1.0 µA and 20 mA / resolution 10.0 µA with ±1% full-scale accuracy.
Body impedance circuit: 1500 Ω, 1% resistance shunted by 0.15 µF, 1% capacitance.
Selection note: choose the LT-30HC when you need higher-current DUT supply capacity than the LT-15 while maintaining the same overall leakage current testing approach.
LT-30HC Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Input / Output Ratings | 100–120 / 200–240 VAC, 30 A, 50–60 Hz | Dimensions | 13.25 in. W x 11.5 in. D x 5.5 in. H |
| Testing Tolerance | 90–132 / 180–264 VAC | Weight | 13 lbs. |
| Measurement Ranges | 2 mA / 1.0 µA resolution; 20 mA / 10.0 µA resolution | Accuracy | ±1% full scale |
| Body Impedance Circuit | 1500 Ω shunted by 0.15 µF | Display | 3.5 in. digital LCD display |
LT-601 and LT-601HC Digital Leakage Current Testers
The ED&D LT-601 and LT-601HC are digital leakage current testers intended for medical product safety testing. These models support switching for measurements made through the product power cord ground conductor, from surface / patient-to-ground, and from patient-to-patient.
Product Details
- Designed for medical product safety leakage current workflows
- Front-panel switch permits multiple leakage current measurement paths
- Measures through the product’s power cord ground conductor
- Measures surface / patient-to-ground leakage current
- Measures patient-to-patient leakage current
- 3.5 in. digital LCD display
Standards referenced for this model family: IEC 60601 and UL 1703.
Body impedance circuits: network in accordance with IEC 60601, EN 60601, CSA 601, and UL 2601.
Use note: for medical leakage current testing, the selected measurement path must match the exact test method required by the applicable edition of the governing medical safety standard or lab procedure.
LT-601 / LT-601HC Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| LT-601 Input Ratings | 100–120 / 200–240 VAC, 15 A, 50–60 Hz | Size | 13.25 in. W x 11.5 in. D x 5.5 in. H |
| LT-601HC Input Ratings | 100–120 / 200–240 VAC, 30 A, 50–60 Hz | Weight | LT-601: 9 lbs. / LT-601HC: 13 lbs. |
| Testing Tolerance | 90–132 / 180–264 VAC | Measurement Ranges | 200 µA / 1.0 µA resolution; 2000 µA / 10.0 µA resolution; ±1% full-scale accuracy |
| Output Ratings | Same as input ratings | Body Impedance Circuits | Network in accordance with IEC 60601, EN 60601, CSA 601, UL 2601 |
| Display | 3.5 in. digital LCD display |
LT-952 and LT-952HC Digital Leakage Current Testers
The ED&D LT-952 and LT-952HC are digital leakage current testers designed for fast routine testing in general product safety programs. These models are positioned around quick test workflow, universal rear receptacle support, and True RMS measurement.
Product Details
- Fast leakage current testing workflow
- Universal rear panel receptacle allows testing products with a wide range of plug configurations
- True RMS meter measures sinusoidal and non-sinusoidal waveforms
- Important for products using switch-mode power supplies that can generate non-sinusoidal leakage currents
- Lightweight enclosure with integral handle
- 3.5 in. digital LCD display
Standards referenced for this model family: IEC 60335, IEC 60950, IEC 61010, UL 60950, CSA 950, and EN 61010.
Body impedance circuits: body circuit for IEC 60950 2nd edition, IEC 61010, IEC 60335, IEC 60065, and related standards.
Legacy standards note: IEC 60950, UL 60950, and CSA 950 are older standards references, but they remain relevant for legacy products, historical test methods, and existing compliance documentation.
LT-952 / LT-952HC Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| LT-952 Input Ratings | 100–120 / 200–240 VAC, 15 A, 50–60 Hz | Mechanical Size | 13.25 in. W x 11.5 in. D x 5.5 in. H |
| LT-952HC Input Ratings | 100–120 / 200–240 VAC, 30 A, 50–60 Hz | Weight | LT-952: 9 lbs. / LT-952HC: 13 lbs. |
| Testing Tolerance | 90–132 / 180–264 VAC | Measurement Ranges | 2 mA / 1.0 µA resolution; 20 mA / 10.0 µA resolution; ±1% full-scale accuracy |
| Output Ratings | Same as input ratings | Body Impedance Circuits | Body circuit for IEC 60950 2nd edition, IEC 61010, IEC 60335, IEC 60065, and related standards |
| Display | 3.5 in. digital LCD display |
AVO-LT1 Applied Voltage Option
The ED&D AVO-LT1 is an applied voltage option for specialized leakage current testing workflows.
Product Details
- Custom-designed low-capacitance transformer provides high isolation
- Safety features include line isolation, applied-voltage warning lamp, safety banana jacks, and output current limiter
- Input and output voltage ranges from 90–264 VAC without changing a range switch
- Separate output jacks provided for connecting an external output monitoring meter
Standard referenced for this option: IEC 60601.
Use note: the AVO-LT1 is not a general-purpose leakage current tester by itself. It is an applied-voltage accessory option for procedures that specifically require this isolated source arrangement.
AVO-LT1 Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Input Ratings | 100–240 VAC less than 0.1 A, 50/60 Hz | Isolation Method | Low leakage custom-designed transformer |
| Output Voltage | 1:1 isolation of input voltage | Size | 6-1/8 in. W x 3-1/4 in. H x 6-1/4 in. D |
| Current | 5 mA max. @ 240 VAC | Weight | 2 lbs. (1 Kg) |
| Impedance | 47 Kohm |
Leakage Current Testing Accessories
ED&D also offers accessories that support setup, current capacity, and DUT connection for compatible leakage current test systems.
LT Low Current Power Cord
The LT Low Current Power Cord is a 15 A power cord for compatible leakage current testers.
LT High Current Power Cord
The LT High Current Power Cord is a 30 A power cord for compatible leakage current testers.
LT Test Lead Kit
The LT Test Lead Kit is a lead set for connection to the front-panel banana jacks when measuring leakage between surfaces or other specified test points.
LT Accessory Plug
The LT Accessory Plug is a device-under-test replacement plug for the LT-30HC.
Ordering note: verify connector style, current rating, and model compatibility before ordering power cords, plugs, or lead kits.
Which Leakage Current Tester Is Right for Your Lab?
| Model | Primary Use | Typical Current Capacity | Key Differentiator |
|---|---|---|---|
| LT-15 | Routine general leakage current testing | 15 A | Core LT platform for lab, production-line, and field use |
| LT-30HC | Routine general leakage current testing | 30 A | Higher-current version of the LT platform |
| LT-601 / LT-601HC | Medical-oriented leakage current testing | 15 A / 30 A | Supports ground, surface/patient-to-ground, and patient-to-patient measurement paths |
| LT-952 / LT-952HC | Fast routine non-medical leakage current testing | 15 A / 30 A | True RMS measurement and universal receptacle support |
| AVO-LT1 | Applied voltage accessory option | Accessory device | Provides isolated applied-voltage capability for IEC 60601-related workflows |
Selection guidance: choose LT-15 or LT-30HC for routine general leakage current testing, choose LT-952 or LT-952HC when True RMS capability and universal receptacle flexibility are important, choose LT-601 or LT-601HC for medical-oriented testing workflows, and add AVO-LT1 when your procedure requires an applied-voltage isolation option.
Frequently Asked Questions
What does a leakage current tester do?
A leakage current tester measures unintended current flow from the product under test to ground, to accessible conductive parts, or between patient connections, depending on the applicable standard and test setup.
Why is True RMS important for leakage current testing?
True RMS is important when testing products that can generate non-sinusoidal leakage current waveforms, such as products using switch-mode power supplies.
What is the difference between the LT-15 and LT-30HC?
Both are general-purpose leakage current testers, but the LT-15 is rated for 15 A and the LT-30HC is rated for 30 A DUT current capacity.
Which models are intended for medical leakage current testing?
The LT-601 and LT-601HC are the medical-oriented models in this family and support ground, surface or patient-to-ground, and patient-to-patient measurement paths.
Are IEC 60950 and UL 60950 still relevant?
Yes, as legacy standards references. They are still relevant for older products, historical compliance files, and established laboratory methods.
Is CE a leakage current testing standard?
No. CE is a regulatory marking framework. Leakage current testing is performed to specific IEC, EN, UL, or CSA standards that may support CE-related compliance programs.
Tell us whether you need general product safety testing, medical leakage current capability, higher current capacity, or an applied-voltage option.
Typical Leakage Current Testing Applications
ED&D leakage current testers are used in a wide range of electrical safety testing, including engineering evaluation, production verification, incoming inspection, field troubleshooting, and compliance-lab workflows.
Depending on the product and governing test program, these workflows may relate to requirements associated with IEC 60335, IEC 60601, IEC 60950, IEC 61010, UL 60950, UL 1703, CSA 950, and EN 61010.
- Routine leakage current testing in electrical safety labs
- Production-line verification and troubleshooting
- Field testing and service support
- Programs associated with IEC 60335 for household and similar products
- Programs associated with IEC 61010 for lab and industrial equipment
- Legacy programs associated with IEC 60950 and UL 60950
- Medical electrical safety workflows associated with IEC 60601
- Patient-to-ground and patient-to-patient measurements on applicable models
- Applied-voltage isolation workflows using the AVO-LT1 option
Selection guidance: choose the tester and measurement network that match the exact product category, current requirement, and governing safety standard for your lab’s test program.