1PA93 type digital medical leakage current tester overview
PA93 type digital medical leakage current tester is suitable for various types of measurement [type I and type II, IP (internal power supply) and B type, BF type,
Medical electrical equipment type CF] of leakage current, leakage current, external shell shell of shell leakage current, with leakage current (DC or AC), patient leakage current (partial pressure or pressure signal application part) and patient auxiliary current (AC or DC) project inspection, the "medical instrument with GB97061-2007 electrical equipment - Part 1: General requirements for safety" relevant provisions of national standard testing requirements and safety testing instruments is essential medical equipment manufacturers and testing department. Implementation of Q/YXYZ7PA93 digital medical instrument enterprise leakage current tester standard.
2PA93 type digital medical Leakage Current Tester Specification and technical characteristics
21 measuring device (hereinafter referred to as instrument)
211 leakage current measurement range, basic error and resolution are shown in table 1.
212 frequency range DC~1MHz.
213 input impedance is greater than or equal to 1M.
214 impedance measurement circuit resistance R (MD)
215 leakage current limit
22 power supply device technical parameters
23 timing device [each switch combination after the delay time (test) does not include the switch combination switch time]
24 product features
A intelligent measurement and control, measuring the true value, and the automatic conversion process.
B synchronous display measurement of power supply and the output voltage and power supply.
C automatic and manual two kinds of mode of operation.
D has a leakage current overrun alarm function.
E has a power supply circuit of over-voltage, over-current and over-voltage protection function of MD measuring device.
F leakage current test items according to the measured equipment requirements, free to change.
G uses 40 x 4 character LCD display, clear display (LCD).
The H is equipped with RS232 or RS485 communication interface (user order required).
25PA93 type digital medical leakage current tester using conditions
The temperature of 0 DEG to 40 DEG C
The relative humidity is not more than 80%
No strong electromagnetic interference source, without a lot of dust and corrosive gas, good ventilation.
26 power supply
Measuring device of 220V + 22V/50Hz.
The power supply device of 220V + 5V/50Hz.
27 power consumption
Less than or equal to 50W (not including the power supply device)
The 28 instrument size and weight are shown in table 5.
Note: for gridlines measuring device
The 32 instrument and the power supply device function key layout
321 instrument
3211 panel
The measured medical electrical equipment
The measurement of power supply
The external power supply
Measuring switch combination circuit
control circuit
The measurement circuit impedance measuring instrument
Display circuit of Microcomputer
4PA93 type digital medical leakage current tester
1 "RESET" -- the reduction or termination of the test button.
2 "START" - test execution (start) button.
3 liquid crystal display.
4 "TEST" light - test state light.
5 "VIEW" indicator - check test records to check the light, have been tested at the end of the recording, indicating lights.
6 "NEXT" indicator -- a test before the end of the project, waiting to enter the test project next time when the indicator light. Press "START" button, the indicator lights, and enter the next test project.
7 "GO" indicator: normal state (NC) after the end of the test, waiting to enter the single fault condition (SFC) test, the indicator light. Press the "START" button, the indicator lights, and into the single fault condition test.
8 "H" - terminal impedance measurement circuit (MD) high voltage input test bar, usually connected to the tested product shell or application part etc..
9 "L" - terminal impedance measurement circuit (MD) low voltage input test bar, usually connected to the tested product shell or application part etc..
10 "AP/SP" terminal -- the application of partial pressure or signal input and output pressure when connected to the application part or part of the input and output signal.
"11" terminal - Measurement of power supply and power supply and grounding terminal power supply circuit (not working with the grounding terminal of a power supply mix).
12 "S12/13" terminal - switch S12 or S13 closed, connected to the F application part or not protective earthing conductor can touch (non application part) is connected with the switch and power supply circuit grounding.
13 "FE (S10) - S10" terminal when the switch is closed connected with the detected grounding end product function (FE).
14 "FAIL" indicator -- a normal state of test items (NC) or the single fault condition test cannot by setting conditions, the indicator light.
15 "PASS" indicator -- a normal state of test items (NC) or the single fault condition test by setting conditions, the indicator light.
16 "VIEW" key check test records has function key. The test can be stopped at any time and can continuously press the key inspection records have been tested. If you need to exit the function keys, press the "RESET" button, the instrument returns to the wait test interface.
"17" key: parameter setting cursor positioning right.
"18" key -- parameter setting cursor left shift position.
19 "SET" button, enter the set state parameter or exit the setting state while preserving the set value.
20 "at" key: decreasing the parameter.
Increase of 21 "delta" key parameters setting.
22 - the "ESC" key parameter to exit the setting, the setting does not save.
23 "POWER" - the power switch.
3212 backboard
5PA93 type digital medical leakage current tester
1 measuring terminal (V1) - Measurement of power supply output, including "P1-1" and "P1-2" and "PE (protective earthing terminal)" three end.
2 measurement of the power supply input terminal (V1) - including "T1/1" and "T1/2" ends.
3 external power supply (V2) input - including "T2/1" and "T2/2" and "K" at the end of three.
4 "CAL" button to check the mode button.
5 nameplate.
6 power socket.
7 - plus fuse holder power supply (V2).
8 - power supply fuse measurement (V1).
322 power supply device
The 3221 panel
1 "power switch".
The 2 "power" indicator.
3 "measuring the power supply voltage adjustment knob.
4 "the external power supply voltage adjustment knob.
3222 backboard
1 measurement of power supply output.
2 external power supply output terminal.
3 power socket.
4 fuse holder.
5 nameplate.
4 safety precautions
41 before using please read the instructions and follow the instructions step in operation.
42 do not use non original accessories, in order to avoid danger.
43 measuring device and power supply device must be well grounded.
Table 44 as far as possible the use of non conducting materials, shall not use any metal between the operator and the tested product.
45 in the testing process, namely "TEST" indicator lights, absolutely not allowed to touch the measured items or any items connected with the measured object. Are not allowed to press the instrument panel and measuring independent buttons and keys.
46 in the continuous testing process, to be "TEST" lights out, "NEXT" indicator lights, turn off the power switch and power supply device, can be re connection between instrument and measurement object, connection, and check the correct, then open the power switch power supply device, for the next project test preparation.
47 found the instrument is abnormal, press "RESET" button to shut down or suspend the test, to be restored after restart test.
48 each time you press the LINK content (i.e. test item order) tested before, must first press the "RESET" button, the instrument reset.
49 in order to ensure the test voltage stability of AC voltage regulator power supply device and users are advised to use the output capacity matching.
In the following 410 to avoid the use of the environment
A placed to avoid direct sunlight and rain or wet.
B please away from fire and heat, to prevent the high temperature of the machine.
C handling or maintenance, should be shut down and will remove the power line.
5 use and operation
51 wait for the test interface
Connect the instrument power supply, open the power switch, the liquid crystal display is shown in Figure 6, then the instrument enters the waiting test interface.
52 set interface 1
When the instrument is in wait for the test interface, click the "SET" key, the LCD displays the values shown in Figure 7, the instrument enters setting interface 1. Set the initial state of the factory
The last of the state parameter display
SWITCH:
TESTING:NEXTTEST:ELC
LIMIT: ARESULT:
CURRENT:0000 AV1: 000VV2: 000V
EQUCLASS:IPRINTSET:
EQUTYPE:BTIME (S):003
LIMIT (A):NEXTFAILSTOP:OFF
TESTLINK:NEXTSTEPTEST:OFF
53 parameter setting
531EQUCLASS -- the choice of tested equipment, shock proof type "I" equipment, "II" and "IP" equipment internal power supply equipment three. When the instrument enter setup 1, "" or "" button, move the cursor to the back of the current project name, press the "delta" or "" button to select the desired type of device.
532EQUTYPE - select the equipment to be tested against electric shock degree of type "B" type equipment, "BF" and "CF" type equipment consists of three types of equipment. "" or "" button to move the cursor to the project name, the "delta" or "" button to select the desired type of device.
533PRINTSET - reservation function, according to the user's need to open the print function.
534TIME: every time after the switch delay time (test).
"" or "" button, the cursor is moved to the back of the project name, the "delta" or "" button, set to the desired value.
535FAILSTOP, stop the test (can choose "ON" or "OFF").
"" or "" button, move the cursor back to the name of the project, the "delta" or "" button to select "ON" or "OFF".
Note 1: "ON", during the test, when any a project in a combination of switch test results are not qualified, stop test.
Note 2: "OFF" - in the testing process, regardless of any one item in a group or several groups of combinations of switches of the test results are not qualified, to stop the test until all switch combination test after all to stop testing.
536STEPTEST - Test procedures (can choose "ON" or "OFF").
"" or "" button, move the cursor back to the name of the project, the "delta" or "" button to select "ON" or "OFF".
Note 1: "ON" - in the entire testing process for the single step test, each switch combination test of each project is completed, each must press the "START" button to continue testing.
Note 2: "OFF" - in the test for continuous testing, and according to the "TESTLINK" option in the order of test project. (see Table 5)
537LIMIT set the upper limit value of leakage current.
"" or "" button, move the cursor to the project "NEXT", click the "delta" or "" key, the LCD displays the values shown in Figure 8, then the instrument enters setting interface 2.
Set the initial state of the factory (class B equipment)
EQUCLASS:XXPRINTSET:
EQUTYPE:XXTIME (S):XXX
LIMIT (A):NEXTFAILSTOP:XXX
TESTLINK:NEXTSTEPTEST:XXX
PA93 type digital medical leakage current tester
The last of the state parameter display
Figure: ELC of leakage current
ENCL1 - shell of leakage current
ENCL2 - shell external shell leakage current
PLC patients with leakage current
PLCSP patients with leakage current (partial or output signal input part pressure)
PLCAP patients with leakage current (applied pressure)
PAC - patient auxiliary current
PAC-D - patient auxiliary current (DC)
NC - normal state (all safety guards are in good condition)
SFC - single fault condition (only a safety protection device or equipment failure, there is only one external abnormal state)
Figure 8 set interface 2
When the instrument enter setup 2, "" or "" button, move the cursor to the desired position, then press the "delta" or "" key to the required value, which has been set up.
A according to the "SET" button to exit the setup interface set interface 2 back to 1, press the "SET" key to return to wait for the test interface, and save the settings.
B according to the "ESC" button to exit the setup interface interface 1 is set back to 2, the setting that is invalid, do not save.
538TESTLINK - select the required test items, and can be optionally selected. "" or "" button to move the cursor to the TESTLINK for "NEXT", then click "delta" or "" key, the LCD displays the values shown in Figure 9, the instrument enter setup 3.
Set the initial state of the factory
NCSFCNCSFCSFC
ELC:05001000ENCL1:01000500PLCAP:0000
PLC:01000500ENCL2:01000500PLCSP:5000
PAC:01000500PAC-D:00100050
NCSFCNCSFCSFC
ELC:ONONENCL1:ONONPLCAP:OFF
PLC:ONONENCL2:ONONPLCSP:ON
PAC:ONONPAC-D:ONON
NCSFCNCSFCSFC
ELC:xxxxxxxxENCL1:xxxxxxxxPLCAP:xxxx
PLC:xxxxxxxxENCL2:xxxxxxxxPLCSP:xxxx
PAC:xxxxxxxxPAC-D:xxxxxxxx
The last set of parameters or display
Set interface 3
When the instrument enter setup 3, "" or "" button to move the cursor to each of the project required the corresponding position, and then use the "delta" or "" button to select "ON" or "OFF" to test project - no need to test the project, to be set. As the parameters to save the settings, according to the "SET" key to exit the setting instrument interface 3 interface 1 to set the parameters; such as abandon save setting, press "ESC" key to exit the instrument settings interface set interface 1 to 3.
Note: this instrument set test project in order to see table 5. The user can choose freely according to needs.
The project content for order
1 of the leakage current in normal state ELCNC
2 pairs of single fault state leakage current ELCSFC
3 shell of the floor drain current in the normal state of ENCL1NC
4 housing for single fault state leakage current ENCL1SFC
5 shell shell external leakage current normal state ENCL2NC
6 shell shell external leakage current single fault condition ENCL2SFC
7 patients with leakage current (AC) in normal state PLCNC
8 patients with leakage current (AC) single fault condition PLCSFC
9 patients with leakage current (DC) in normal state PAC-DNC
10 patients with leakage current (DC) single fault condition PAC-DSFC
11 patient auxiliary current normal state PACNC
12 patients with normal PACSFC single auxiliary current
13 patient auxiliary current (DC) normal state PAC-DNC
14 patient auxiliary current (DC) single fault condition PAC-DSFC
15 patients with leakage current (application pressure) single fault condition PLCAPSFC
16 patients with leakage current (partial or output signal input part compression) single fault condition PLCSPSFC
54 exit when the parameter setting is finished, the instrument in the 1 state setting interface. According to the "SET" button, then save the settings interface 1, set 2 and set the interface interface
Set the content in 3, and Exit 1 to wait for the test interface interface; the "ESC" button, then give up 1 and 2 set interface set interface set interface and set the content in 3, and Exit 1 to wait for the test interface interface.
NCSFCNCSFCSFC
ELC:xxxxxxENCL1:xxxxxxPLCAP:xxx
PLC:xxxxxxENCL2:xxxxxxPLCSP:xxx
PAC:xxxxxxPAC-D:xxxxxx
55 steps
551 complete set, waiting for the instrument under test interface.
The 552 line will be connected with instruments and measurement of power supply (V1) and the external power supply (V2) connected properly and check.
553 in accordance with the required test item order (TESTLINK) in the first test items according to the corresponding wiring wiring diagram, and check.
554 power switch on the power supply device, the "power" on the "open" position.
555 click "START", "TEST" indicator light, while rotating the voltage adjusting knob to the desired value. Liquid crystal display (LCD) to display the corresponding switch closed, leakage switch combination of the current test items in current value and set the upper limit value of leakage current measurement, power supply (V1) or external power supply voltage (V2) and the test results and suggest that the next test items and other types of information.
Note 1: "SWITCH:" behind the numbers or letters, said the current test switch switch combination in the closing of the project.
For example: "SWITCH:15H" represents the current S1S5 and H three switch.
Note 2: "TESTING:" behind the letters are testing items.
For example: "TESTING:PLCNC" means "project is currently being tested in patients with leakage current" and "normal" test.
Note 3: "NEXTTEST:" behind the letters and numbers next to the test project.
For example: "NEXTTEST:ENCL1" means the next project is to test the "shell of the floor drain current".
Note 4: "LIMIT:" behind the digital representation of the current test project settings corresponding to the upper limit value of leakage current.
Note 5: "RESULT:" behind the letters and numbers of test condition. Specific examples are as follows:
1) "TEST": being tested.
2) "PASS": the current switch combination in duration after the arrival of the test project is a leakage current leakage current setting value is less than the upper limit value, the test results are qualified.
3) "FAIL": the current switch combination in duration after the arrival of the test project is a leakage current leakage current setting value is greater than the upper limit value, the test results are not qualified.
4) "OC": the leakage current is larger than 11000 A, the buzzer alarm and terminate the test, automatically cut off the power supply power supply device. Press "RESET" button to eliminate the alarm sound, the instrument enters the waiting test interface.
5) "OV": measuring the voltage value is greater than 280V, the buzzer alarm and terminate the test, automatically cut off the power supply power supply device. Press "RESET" button to eliminate the alarm sound, the instrument enters the waiting test interface.
6) "NOEXIST": the required test item does not exist, suggesting that in the "TESTLINK" item selection error, does not meet the test requirements of GB97061.
SWITCH:XXXXXXXXX
TESTING:XXXXXXNEXTTEST:XXXX
LIMIT:XXXX ARESULT:XXXX
CURRENT:XXXXX AV1:XXXVV2:XXXV
Note 6: "CURRENT: MAXCUR" or "CURRENT" behind the digital representation of the measured in the test project of a current switch by a combination of a leakage current value. If the leakage current measurement unit displays the "Mu alpha /DC", said the value of DC leakage current. "MAXCUR:" behind the figures represent the current state of the normal test project (NC) or a single fault condition (SFC) after all switch leak current maximum value in the.
Note 7: "V1" behind the digital power supply voltage measurement. Rotary power supply device in measuring the power supply voltage adjusting knob and gain.
Note 8: "V2" behind the external power supply voltage value of digital representation. Rotary power supply device of external power supply and voltage regulating knob.
556 test current test project selection in three ways: (select the set consists of 538 parameters)
1) containing normal (NC) and single fault condition (SFC);
2) only the normal state (NC);
3) only a single fault condition (SFC).
Any state (NC or SFC) switch in combinatorial testing after all, when the switch combination is in the process of leakage current value is less than the set value, the "PASS" indicator light; when the leakage switch combination in the process of all the current value is greater than the set value, the "FAIL" lights and buzzer alarm the sound to press the "START" button to eliminate the alarm sound, and into the next test.
557 the current state selection test:
(a) such as 556/1) to the normal state when the end of the test, "PASS" or "FAIL" indicator light, and waiting to enter the single fault condition test, "GO" lights and a "beep" sound. Click "START" button, the instrument will automatically enter the single fault leakage current test state of each switch combination, the single fault condition test end, "PASS" or "FAIL" indicator light.
B) such as 556/2) and 3) situation, to be selected state test end, "PASS" or "FAIL" indicator light.
At the same time, the "TEST" lights out, "NEXT" lights and buzzer "beep", suggesting that the current test items have been tested, and cut off the power supply power supply device (V1 or V2 equal to zero).
558 when the first test project after the end of the test, according to the liquid crystal display "NEXTTEST" behind the letters and numbers to inform the next test project, to be "TEST" lights out, "NEXT" indicator lights, turn off the power switch and power supply device, can according to the corresponding re wiring diagram, and after check. Then open the power switch power supply device, press the "START" button, the instrument enters the next test project, "TEST" and "NEXT" lights, lights out. Repeat the steps above 557 content. Until the "TESTLINK" (test item order) the last test items in the end (LCD LCD screen in the "NEXTTEST" column shows the first test project content,) "PASS" or "FAIL" indicator light. Then press the "RESET" button, the whole testing process
End。 To wait for the test instrument interface.
559 if the test can be suspended to press the "RESET" button in the process of testing, the instrument back to the start of the test for testing interface.
5510 each time you press the "TESTLINK" (test item order) tested before, must first press the "RESET" button to return to the interface for testing instrument.
(1) instrument and power supply device
(2) instrument and tested products
1) on the drain current of /ELC (according to GB9706)
S12/S13 tested equipment
PA93FE (S10) EQUCLASS: 1
PEEQUTYPE:B/BF/CF
Test end P1-1
P1-2
Note: if the connection S12/13, FE (S10) by the user according to the measured specific products.
2) shell of the floor drain current /ENCL1 (see GB9706)
Note 1: do not use protective earthing end PE for class II equipment.
Note 2: whether the connection S12/S13, FE (S10) AP/SP, as determined by the user according to the measured product.
Note 3:H is connected to the measured non protective earthing shell.
Note 4:AP/SP (if necessary) connected to the measured signal input signal output part or product (short circuit or load).
3) housing foreign shell leakage current /ENCL2 (see GB9706)
Note 1: do not use protective earthing end PE for class II equipment.
Note 2: whether the connection S12/S13, FE (S10) AP/SP, as determined by the user according to the measured product.
Note 3:H and L are respectively connected to the end of the measured two without protective earthing shell.
Note 4:AP/SP (if necessary) connected to the measured signal input signal output part or product (short circuit or load).
4) with leakage current (AC test) /PLC (according to GB97061)
The equipment to be tested
Note 1: do not use protective earthing end PE for class II equipment.
Note: the 2 is connected to the FE (S10), S12/S13, specified by the user according to the measured product.
Note 3:H is connected to the measured product application part.
5) patients with leakage current of DC testing, can be placed in the patient auxiliary current (DC) PAC-D a test project, in addition to connection mode is not the same, the leakage current data with DC exactly the same as the connection mode of PA93 digital medical leakage current tester B
6) patients with leakage current /PLC (see GB9706)
The equipment to be tested
Note 1:H is connected to the measured product application part.
Note 2:L is connected to the measured itemscase.
7) patient auxiliary current (refer to GB9706) /PAC
The equipment to be tested
Note 1: do not use protective earthing end PE for class II equipment.
Note 2: FE (S10) is connected by the user according to the measured specific products.
Two patients with 3:H, L end is respectively connected to the connecting point of the measured product.
8) patient auxiliary current (refer to GB9706) /PAC
9) patient auxiliary current (DC) /PAC-D (according to GB9706)
Note 1: do not use protective earthing end PE for class II equipment.
Note 2: FE (S10) is connected by the user according to the measured specific products.
Note 3:H and L are respectively connected to the end of the measured two patients with connection point.
10) patient auxiliary current (DC) /PAC-D (according to GB9706)
The equipment to be tested
Note: two patients with H and L terminal are respectively connected to the connecting point of the products tested.
11) with leakage current (application part pressure) /PLCAP (refer to GB9706) FE (S10)
The equipment to be tested
Note 1: do not use protective earthing end PE for class II equipment.
Note 2: whether the connection S12/S13, FE (S10), by the user according to the measured specific products.
Note the 3:H end application connected to the measured part of the goods.
The equipment to be tested
Note 1:H is connected to the measured product application part.
Note 2: connected with the measured itemscase.
(13) patient leakage current signal input or output compression part (see GB9706) /PLCSP)
Note 1: do not use protective earthing end PE for class II equipment.
Note: the 2 is connected to the FE (S10), S12/S13, by the user according to the measured specific products.
Note 3:AP/SP is connected to the measured signal quality input or output part (short circuit or load).
Note 4:H is connected to the measured product application part.
14) with leakage current (pressure signals from the input or output part) /PLCSP (according to GB9706)
Note 1:H is connected to the measured product application part.
Note 2:AP/SP is connected to the measured signal quality input or output part (short circuit or load).
6 check
61 check the instrument into the liquid crystal display interface
The instrument "power supply" switch on "open" and hold back on the "CAL" button, the instrument automatically enter the calibration status, i.e. LCD rear surface can release the "CAL" button.
62 instrument function keys
1) the "SET" key: used to change the current measuring range, the instrument consists of AUTO/ * 100/ * 10/ * 1 four ranges available, the "SET" button switches, and display the current range in RESULT behind.
2) "" key: switching AC for "AC" or "DC", such as DC to DC, will show "CURRENT:XXXXX A/DC".
3) "" key: whether for switching instrument access measurement impedance circuit (MD), such as access impedance measurement circuit (MD), only displays "CAL" instead of "MD in the TESTING after the show". Such as the need to exit the calibration status, only need to turn off the power switch device, after reboot, the instrument automatically enter the waiting test interface.
63 check method
631 check the leakage current
Note: should not access impedance measurement circuit (MD) when
Connection, press "" button, the TESTING behind the show only when "CAL" is not access impedance measurement circuit [(MD)], regulation of AC / DC broadband signal source, the AC / DC broadband standard voltmeter shows that the voltage required value (V), by formula (1) the calculation of the standard current value (I at the same time), record value display instrument on leakage current (I '), and according to the formula (2) calculation of the leakage current should be consistent with the basic error required in table 1.
632 check the power supply voltage measurement (V1) and the external power supply voltage (V2).
Wiring, power supply and voltage measurement respectively rotate with the power supply of the adjusting knob, the standard AC voltmeter display required V1 value and V2 value, and meanwhile the corresponding instrument V1 and V2 'value, and according to the formula (3) or (4) calculation of voltage error should be consistent with the requirements in table 2.
7 random accessories
Use a manual
A certificate
Test clamp six
Plug line
The aviation plug cable two
A test box
Can not reconnect the power line two
The power supply device (05kVA, 1kVA, 2kVA, 3kVA and 5kVA) a
A piece of copper foil
8 other
81 the instrument should be kept in the interior to maintain its ambient temperature 0 to 40 DEG C, relative humidity of not more than 80%, and in the air does not contain harmful substances to cause corrosion.
82 instruments from users to purchase within 12 months, when users use fully comply with the rules in the specification, and the user does not attempt to change the instrument internal structure, it is found that the instrument is not working properly, then the manufacturer should be responsible for free to replace or repair.
83 manufacturing plants have the right to make changes without notice to the product.
L EFUP
Poisonous and harmful substances or elements contained in the instrument is not used in the normal conditions, leakage or mutation, users use the instrument will not cause serious pollution to the environment or causing serious damage to person and property for a period of 10 years. The poisonous and harmful substances or elements of the name and content identification
A body of XXX, XXX
The shell plating 1000 X eighty
LCD screen X X eighty eighty
The circuit board X XXX eighty
Contactor X XXX eighty
Transformer
(regulator)
X XXX eighty
Switch X XXX eighty
Ten: the concentration of the hazardous substance in all homogeneous materials in the parts are specified in the SJ/T11363-2006 standard limits for the following.
X said: the limited requirements of the content of toxic and harmful substances in at least one of the homogeneous materials beyond the SJ/T11363-2006 standard.
Note: This product is 80% parts manufacturing using non-toxic environmentally friendly materials, instead of containing toxic and hazardous substances or elements of parts because of global technical level limit and cannot achieve the toxic and hazardous substances or elements.