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 ST5541 provides support for standard-compliant networks (excluding medical-use electrical devices).
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Compliance with Electrical Appliances and Materials Safety Act, JIS/IEC/UL standards
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
Basic Specifications
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
(NW: Body simulated resistance)
[NW-A] • Electrical Appliances and Materials Safety Act
[NW-C]
• Measurement of touch current and protective conductor current: IEC 60990:2016
• Electrical equipment for measurement, control, and laboratory use: IEC 61010-1:2010+ A1:2016
• Information technology equipment: IEC60950-1:2005+ A1:2009+ A2:2013
• Audio, video and similar electronic apparatus: IEC 60065:2014
• Personnel Protection Systems for EV: UL 2231-1:2012 (Amended 2016), UL-2231-2:2012 (Amended 2016)
[NW-D] • For UL: UL 1492:1996 (Amended 2013)
[NW-G] • Electrical equipment for measurement, control, and laboratory use; current measurement circuits in damp conditions: IEC 61010-1:2010+ A1:2016
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: 50.00 mA/ 5.000 mA/ 500.0 μA/ 50.00 μA
AC peak mode: 75.0 mA/ 10.00 mA/ 1.000 mA/ 500.0 μA
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 (Red ×1, Black ×1) ×1 set, Enclosure probe 9195 ×1, Power cord ×3, Spare fuse for measurement line ×1, Instruction manual ×1, CD-ROM ×1
Instrument Type
Line Leakage Tester
Notes
For applications involving leak current measurement of medical-use electrical devices, use the ST5540.
