Welcome to use our instrument. Please check the accessories by
referring to the list of attachments after the instruction after
opening the instrument package. Please read this instruction
carefully before use.
I. Overview
The MS2621GNS series leakage current tester is mainly used to
detect leakage current of medical equipment or laboratory standard
equipment. The instrument applies to the detection of the earth
leakage current, housing leakage current, patient leakage current,
patient leakage current (applied voltage test of signal part),
patient leakage current (applied voltage test of applied part) and
patient auxiliary current (DC and AC) of medical electrical
equipment in various types (class I, class II, internal power
supply and B type, BF type, CF type). The instrument meets the
standard test requirements of Medical Electrical Equipment Part I -
General Requirements for Safety (GB9706.1) and Safety Requirements
For Laboratory (GB4793.1), and is the essential safety regulation
test instrument for medical device manufacturers and test
authorities.
Main characteristics:
1. It can set test items according to the category, such as
automatically combining the tests in the same test item, and
synchronously displaying the measured voltage value, external
voltage value, normal state leakage current value, and single fault
state leakage current value;
2. It can complete the tests of earth leakage current, housing
leakage current, patient part leakage current (applied network
power voltage test of applied part), patient leakage current (DC
and AC) and other items by pressing one button, and test them
separately;
3. It has the power supply circuit overvoltage and overcurrent
protection, MD measuring device overcurrent protection, and leakage
current over-limit acousto-optic alarm function.
4. It has PLC interfaces for external control; it has an RS232
interface to upload test data in real time.
II. Main Technical Indicators and Parameters
1. Working environment:
a. Temperature :0℃ - 40℃
b. Relative humidity: no more than 80%.
c. There is no strong electromagnetic interference source around,
no large amount of dust or corrosion gas, and the ventilation is
good.
2. Power supply: AC 220V±5%; 50Hz ± 2Hz
3. Instrument power consumption: no more than 50 W.
4. Measuring device: Automatic range switching, true effective value measurement.
(1) Medical GB9706.1-2007 standards
a. leakage current measurement range:
I 3 - 99.9 (μA) Resolution: 0.1μA
II 100.0 - 999.9 (μA) Resolution: 0.1μA
III 1000 - 9999 (μA) Resolution: 1μA
b. Leakage current and auxiliary current in patient parts: DC
measurement range :3 - 99.9 (μA) Resolution: 0.1μA
c. Measurement accuracy: ±5%. Note: the accuracy range is more than
10μA.
d. Frequency range: DC - 1MHz
e. Measurement impedance circuit (MD): conform to GB9706.1-2007
Figure 15
(2) Laboratory GB4793.1-2007 standards
a. Leakage current measurement range AC:
I 3 - 99.9 (μA) Resolution: 0.1μA
II 100.0 - 999.9 (μA) Resolution: 0.1μA
III 1000 - 9999 (μA) Resolution: 1μA
b. Measurement accuracy: ±5%. Note: the accuracy range is more than
50μA.
c. Measurement impedance circuit (MD): conform to GB4793.1-2007
Figure A.1
5. Output voltage:
a. Measure voltage output range of power supply: 100 V - 250 V;
resolution: 1 V.
b. Accuracy: ±4%; add 2 words in read value.
c. Capacity: MS2621GNS 300VA; MS2621GNS-IA 500VA; MS2621GNS-IB
1000VA
6. Timing device:
1) Range :3 - 9999(s) resolution: 1 s
2) Accuracy: ±5%
(1) “Power” switch: press the power switch to power on the
instrument.
(2) “Start” key: press the key, and the instrument starts a
testing.
(3) “Reset” button: press the key to stop the test; if there is an
over leakage alarm, press the key to stop the alarm.
(4) “SET” key: instrument setting key, press to enter parameter
setting state.
(5) “∨” key: press this key to reduce the value when setting
parameters.
(6) “∧” key: press this key to increase the value when setting
parameters.
(7) “ENT” key: press this key to save the set data and return to
standby mode.
(8) “LCD screen”: information display window.
(9) Voltage regulating knob: turn this knob to adjust the output
voltage, clockwise for boost, counterclockwise for reduction
voltage, counterclockwise to the end at ordinary times.
(10) “Test” indicator: it indicates that the leak test voltage has
been output.
(11) “PASS” indicator: it indicates that the tested object is
qualified.
(12) “NG” indicator: it indicates that the over-leakage alarm is
not up to standard.
“S1” indicator: when the instrument is testing in a single fault
state of the power supply, the indicator lights on, corresponding
to the “S1” switch in standard 9706.
“S5/S9” indicator: it is the commutation indicator, corresponding
to “S5/S9” switch in Standard 9706.
“S7” indicator: this indicator indicates the “PE” port is
connected, corresponding to the “S7” switch in Standard 9706.
“S10” indicator: this indicator indicates the “FE” port is
connected, corresponding to the “S10” switch in Standard 9706.
“S12/S13” indicator: this indicator indicates that the “AP” port is
connected, corresponding to the “S12” and “S13” switches in
Standard 9706.
(18) “MD” jack: MD high terminal.
(19) “MD” jack: MD low terminal.
(20) “AP” jacks: corresponding to the S12 or S13 in 9706.1
standard.
(21) Ground terminal jack: reliably grounded (this port may not be
connected when the power or rear panel is reliably grounded).
(22) “PE” jack: protective grounding jack
(23) “FE” jack: function grounding jack.
(24) “Continuous” button: it is used to switch between the “single
mode test” and “multi mode continuous test”; it is “single mode
test” when the button is popped up, and “multi mode continuous
test” when the button is pressed down.
(25) “Category select” button: press this button for class I test;
pop up this button for class II and internal power test.
(26) “Category select” button: press this button for class II test;
pop up this button for class I and internal power test.
(27) “Category select” button: press this button for internal power
test; pop up this button for class I and class II test.
(28) Ground jack: MD high terminal; in multi-mode combination test,
it connects the “PE” terminal of the tested equipment to measure
the ground leakage current.
(29) “Housing” jack: MD high terminal; in multi-mode combination
test, it connects the “housing” of the tested equipment to measure
the leakage current of the housing.
(30) “Patient” jack: MD high terminal; in multi-mode combination
test, it connects the “applied part” of the tested equipment to
measure the patient leakage current from the F type applied part to
the ground caused by the external voltage in the single fault
state.
(31) Output power jack: Test voltage output terminal.
(32) “Auxiliary Power”: Auxiliary voltage output.
(33) “Auxiliary Power”: Auxiliary voltage output.
(34) “PLC” interface: it is a standard nine-core jack.
(35) “RS232” interface: it is a RS232 serial communication
interface.
(36) Grounding terminal: it is a housing ground terminal.
(37) Power outlet: input AC220V, 50Hz power supply, with internal
fuse.