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Introducing a leak current measuring instrument that complies with the IEC 60601-1 standard (3rd edition, with the ST5540), the ST5540 series feature an improved measuring method and dramatically faster cycle times, thanks to its uninterrupted polarity switching. The new devices support rated currents of up to 20A, making it more than ideal for use with products built to new standards.
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.
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.
| 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 |
| Standard Compliance | Medical electrical equipment: IEC 60601-1 (1988) + A2:1995, (2005, 3rd Edition), JIS T0601-1:1999, 2012 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, 7 types of patient leak current, patient measurement current, 4 types of total patient leak current, free current measurement, 3 types of enclosure leak current |
| Measurement Current | DC, AC (true rms, 0.1 Hz to 1 MHz), AC+DC (true rms, 0.1 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, medical device relay output, USB 1.1 (communications), RS-232C |
| Functionality | 110% voltage application, automatic test, data storage for 100 target devices, clock, data backup, printed output (optional), etc. |
| HiTESTER 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 240 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, 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) |
| Supplied 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, Users guide ×1, CD-ROM ×1 |
