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Why do you need leaking current tests
Electrical equipment is usually designed to have sufficient insulation to protect operators from electric shocks. However, as time passes, the equipment deteriorates and when the equipment is used for long periods of time, current leaks may evolve and intensify. Such leaks are extremely dangerous to the human body. Leakages generated by medical electrical equipment are particularly problematic, as they can lead to prolonged electroshocks and serious damage to tissue by patients in coma。
St5540 and st5541 enable operators to comply with specific leaks already in place, and international and japanese standards address the current testing requirements for these risks。
The st5540 series meets the test of poor performance and can be used for leak current tests. Changes in the medical leak current test instrument measurement method in st5540 reduce the operational time: they can be adapted to larger currents and can therefore be used in leak current tests for new products such as equipment and household electricity. Besides, the voltage can reach 240 v
St5540 advanced functionality of the leak current tester for medical applications
All standard test types supporting medical and general electrical equipment (st5540)
Electrical equipment (including electrical equipment intended for medical applications) is usually designed to have sufficient insulation to protect operators from electroshock。
However, insulation may vary over time. St5540 and st5541 were able to perform standard leak current tests to detect such deterioration before problems arose. (st5540 only is designed to test medical equipment
The introduction of new measurement methods reduced test time
The previous model (especially leak current hitester 3156) required the closure of the detected equipment during testing under certain standards. On the contrary, st5540 can perform these tests without shutting down the detected equipment, thereby reducing the test time。
Supporting rated currents up to 20a, more detectable products
Hioki responded to requests from clients on the ground by increasing the rated current of new products to 20a (previously up to 15a). St5540 and st5541 are capable of absorbing large currents, thus allowing leak testing of new design products such as industrial equipment and household appliances. The instrument supports a maximum voltage of 240 v (maximum 264 v)。
Compliance with iec 60601-1:2005 international standards
Unlike the previous model, st5540 meets the iec 60601-1:2005 international standard iii, allowing leakage current measurements from 0. 1 hz to 1 mhz。
St5540 meets the following criteria:
St5540 international standards for medical leakage current testers
Iec 60601-1: version 3 of 2005 (medical electrical equipment — part 1: general requirements for basic safety and basic performance)Japanese standards
Jis t 1001:1992 (general rules for safety test methods of medical electrical equipment), jis t 1002:1992 (general requirements for safety of medical electrical equipment)
Jis t 0601-1:1999 (medical electrical equipment: general safety requirements)
St5540 medical leak flow tester, selected form for daily hioki st5540 leak flow tester
| Model | St5540 | St5541 |
| Methods of measurement | Measuring human simulation of pressure reduction at resistance points Measurement of the calculation and display of current values The measurement unit floats against the instrument。 |
|
| Method of measurement | Leak current measurements, voltage measurements, safety conductor current measurements | |
| Leak current measurement | Ground leaks, 3 exposures, 7 patient leaks, patient measurement of currents, 4 patient total leaks, free current measurements, 3 shell leaks | |
| Measuring currents | Direct flow, communication (real rms, 0. 1 hz to 1 mhz), communication + straight flow (real rms, 0. 1 hz to 1 mhz), communication peak (15 hz to 1 mhz) | |
| Measurement range | Dc / ac / ac + dc mode: 50 μa/ 500 μa/5 ma / 50 ma Ac peak mode: 500 μa/1 maa / 10 maa / 75 maa |
|
| Measurement precision (electrical current measurements) | Straight flow measurement: ≤2. 0%rdg。♪ 6 dgt。(typical value) Ac / ac + dc measurements: 2. 0 per cent of readings。♪ 6 dgt。(typical values 15 hz to 100 khz) Ac peak measurement: ±2. 0 per cent of readings♪ 6 dgt。(15 hz to 10 khz) |
|
| Interface | External i / o, medical equipment relay output, usb 1. 1 (communications), rs-232c | |
| Functionality | 110% voltage, automatic testing, storage of data for 100 target devices, clocks, data backup, printout (optional) etc | Automatic testing, data storage for 100 target devices, clocks, data backup, printout (optional) etc |
| Power | 100/120/220/240 v ac (designated upon order), 50/60 hz, 30 va rated power | |
| Target equipment power input | Rating current input for 100 to 240 v ac, 50/60 hz connections: 20 a | |
| Target equipment power output | Connector end output: 20a plug output: 15a | |
| Size, mass | 320 (w)110(h)253 (d) mm, 4. 5 kg | |
| Apparel | 1-test guide 9170-10 1-shell probe 9195 1-test lead red 3 - crocodile clamps (1 red and 1 black) 1-use manual 1-user manual 3. Power lines 1 - backup measuring fuse |
1-test line 9170-10 1-shell probe 9195 3 - crocodile clamps (1 red and 1 black) 1-use manual 1-user manual 3. Power lines 1 - backup measuring fuse |
St5540 medical leak flow tester technical parameters for the daily hioki st5540 leak flow tester:
Safety test/surge test/spill current test module board |
|
|---|---|
| Test method (safe) | Iec 60601-1, jis t 0601-1 |
| Maximum communication current | 75 ma (0. 075) |
| Maximum straight current | 50 ma (0. 05 an) |
| Minimum communication current | 50 ua (0. 05 ma) |
| Minimum straight current | 50 ua (0. 05 ma) |
| Precision | Straight flow measurement: 2. 0 per cent of readings6 dgt。(typical value) Communication/communication + straight current measurement: 2. 0 per cent of readings6 dgt。(typical values 15 hz to 100 khz) Ac peak measurement: 2. 0 per cent of readings6 dgt。(15 hz to 10 khz) |
Test device general properties |
|
| Unique function | Designed for testing medical electrical equipment |
| Promise | 1 year |
| Interface i / o | Rs-232 |
| Product weight | 4. 5 kg (9. 92 pounds) |
| Product height | 110 mm (4. 33 inches) |
| Product length | 253 mm (9. 96 inch) |
| Product width | 320 mm (12. 60 inches) |
| Eccn number | 3a992 |
| Including calibration | Plant calibration |
| Power voltage | 120 v 50/60 hz, 220 v, 240 v |
| Country of birth | Japan |
| Transport height | 9. 50 inches |
| Length of transport | 15. 00 inches |
| Transport width | 15. 00 inches |