Leakage Current Tester According to IEC 60601-1, IEC60990, IEC60335, and other Safety Standards
LEAK CURRENT HiTESTER ST5540
Model No. (Order Code)
|ST5540||for medical-use electrical devices|
Note: The photograph portrays the Japanese version of the product. Other countries’ versions of the product lack the outlet on the front panel. Note: Always use an isolation transformer when measuring leak current for medical-use electrical devices. The ST5540 does not include an isolation transformer. When measuring medical-use electrical devices, use a step-up isolation transformer or similar component operating at 110% of the rated supply voltage as the power supply for the device under test.
To ensure the safe use of electrical products, electrical safety tests such as insulation resistance, withstand voltage, ground resistance, and leakage current must always be conducted. Hioki Leakage Current Testers comply with laws and standards regarding medical electrical equipment as well as non-medical electrical equipment, and can be used to measure leakage current in all types of electrical products from computers to medical equipment.
The ST5540 consists of measurement networks that simulate the human body and a high-frequency volt meter, and is also capable of switching power supply polarities and making measurements under simulated single fault conditions in equipment under test.
• IEC 60601-1: (2005) 3rd Edition, JIS T0601-1:2012 compliant
• Complies with JIS, IEC, and UL standards governing medical- and general-use electrical devices
• Uninterrupted polarity switching function dramatically reduces cycle time
• Support for rated currents up to 20 A gives the instrument more than adequate capability for testing products designed to comply with new standards
• Touch panel features simple, interactive operation
• Communications functionality and external I/O support allow automatic testing on production lines
Leak Current Measurement - Essential to Electrical Safety
Compliance with IEC 60601-1:2005 (3rd Edition) is now mandatory.
The ST5540 also complies with JIS T0601-1:2012.
The ST5540 series features an improved measuring method and dramatically faster cycle times thanks to its uninterrupted polarity switching capability. The new devices support rated currents of up to 20A, making it more than ideal for use with products built to new standards.
Of Medical Electrical Devices
In order to prevent the danger of electric shock, electrical devices use power supplies that are isolated from parts of the device that may come into contact with the body. However, it is impossible to achieve infinite insulation resistance. Some leak current always exists, and its magnitude changes as the insulation degrades over time. The LEAK CURRENT HiTESTER ST5540/ST5541 provides an easy-to-operate solution for measuring leak current in electrical devices, making it eminently suitable for use in an extensive array of applications, ranging from production lines to equipment maintenance and inspections.
3157 Safety Standard for Hospital Electrical Equipment JIS T 1022:2006 Measurement
Combination of Instruments for Leak Current Testing and Safety Conductor Testing
The following are key parts of any safety inspection of electrical equipment:
•Leak current test: Measure with the ST5540 and ST5541.
•Safety conductor test (also known as a ground line resistance test or ground conductor test): Measure with the 3157.
The 3157 can also be used for conducting measurements under the JIS T 1022:2006 safety standard for hospital electrical equipment.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
|Measurement methods||Measurement of voltage drop across body simulated resistance points, Calculation and display of current values, True rms measurement, Measurement unit floats relative to instrument ground.|
|Measurement modes||Leak current measurement, voltage measurement, safety conductor current measurement|
|Standards compliance||Electrical Appliances and Materials Safety Act
Measurement of touch current and protective conductor current: IEC 60990 (1999)
Electrical equipment for measurement, control, and laboratory use: IEC 61010-1 (2001)
Information technology equipment: IEC 60950-1 (2005)
Household and similar appliances: IEC 60335-1 (2001) + A1:2004 + A2:2006
Audio, video and similar electronic apparatus: IEC 60065 (2001) + A1:2005
Personnel Protection Systems for EV: UL-2231-1 (2002), UL-2231-2 (2002)
UL: UL-1492 (1996)
Electrical equipment for measurement, control, and laboratory use; current measurement circuits in damp conditions: IEC 61010-1 (2001)
|Leak current measurement||Ground leak current, 3 types of contact current, free current measurement, 3 types of enclosure leak current|
|Measurement current||DC, AC (true rms, 15 Hz to 1 MHz), AC+DC (true rms, 15 Hz to 1 MHz), AC peak (15 Hz to 1 MHz)|
|Measurement ranges||DC / AC / AC+DC mode:50 μA/500 μA/5 mA/50 mA
AC peak mode:500 μA/1 mA/10 mA/75 mA
|Measurement accuracy (current measurement)||DC measurement: ±2.0% rdg. ±6 dgt. (typ.)
AC / AC+DC measurement: ±2.0% rdg. ±6 dgt. (15 Hz to 100 kHz, typ.)
AC peak measurement: ±2.0% rdg. ±6 dgt. (15 Hz to 10 kHz, typ.)
|Interfaces||External I/O, USB 1.1 (communications), RS-232C|
|Functionality||Automatic test, data storage for 100 target devices, clock, data backup, printed output (optional), etc.|
|Power supply||100/120/220/240 V AC (specify at time of order), 50/60 Hz, 30 VA rated power|
|Target device power supply input||100 to 250 V AC, 50/60 Hz, Rated current input from terminal block: 20 A|
|Target device power supply output||Output from terminal block: 20 A, Output from outlet: 15 A|
|Dimensions and mass||320 mm (12.60 in) W × 110 mm (4.33 in) H × 253 mm (9.96 in) D, 4.5 kg (158.7 oz)|
|Accessories||Test lead L2200 (for ST5540, Red ×2, Black ×1) ×1 set, Enclosure probe 9195 ×1, Power cord ×3, Spare fuse for measurement line ×1, Instruction manual ×1, User guide ×1, CD-ROM ×1|
ST5540, ST5541 List of functions (Network)
|Network A (Electrical Appliances and Materials Safety Act)||○||○|
|Network B (Medical-use electrical devices)||○||-|
|Network C (IEC 60990)||○||○|
|Network D (UL)||○||○|
|Network E (General-purpose 1)||○||○|
|Network F (General-purpose 2)||○||○|
|Network G (IEC 61010-1)||○||○|
List of functions (Major functions)
|Power on polarity switching function||○||○|
|Rated current 20 A||○||○|
|Function for checking for blown fuses||○||○|
|Frequency band switching||○||-|
|110% voltage output terminal (T3 terminal)||○||-|
|S10, S12, S13, E terminal||○||-|
List of functions (Testing leakage current mode)
|Earth leakage current||○||○|
|Patient auxiliary current||○||-|
|Patient leakage current||○||-|
|Total patient leakage current||○||-|
|Enclosure - Earth leakage current||○||○|
|Enclosure - Enclosure leakage current||○||○|
|Enclosure - Line leakage current||○||○|
|Patient leakage current I||○||-|
|Patient leakage current II||○||-|
|Patient leakage current III||○||-|