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20

Figure 22

7

、

End of work

1. Close all valves on the cylinder.
2. Press the "bleed" button on the panel to discharge the residual gas in the

pipeline.

Note: do not pull off the air inlet plug without venting

3. Turn off the power.
4. Pull out the air pipe.
5. Unplug the signal and power cables.

8

、

Precautions

1. When verifying the SF6 gas density relay on site, disconnect the power

supply connected with the density relay to avoid damaging the calibrator.

2. Before going to the site, bring the tool box, check the nitrogen gas storage

capacity of the small gas cylinder in the tool box, and bring all the transition
joints and tools for the switch.

3. The corresponding alarm signal line and locking signal line on the terminal

strip shall be disconnected from the terminal strip to prevent the secondary
circuit and the signal line in the secondary circuit from forming a circuit and
affecting the test.

Содержание ZXMD-2001

Страница 1: ...ZXMD 2001 Full Automatic SF6 Density Relay Calibrator ...

Страница 2: ...cture 5 5 How to use 5 6 Function description 8 7 End of work 20 8 Precautions 20 9 Custody and transportation 21 10 After sales service 21 11 List of accessories 22 Appendix 1Packing diagram of SF6 density relay transition connector 23 Appendix II schematic diagram of cylinder inflation connection 24 ...

Страница 3: ...tch is a widely used high voltage electrical appliance in power system The reliable operation of SF6 switch has become one of the most concerned issues in power supply and consumption departments SF6 gas density relay is an important component used to monitor the change of SF6 gas density in the operation of SF6 switch Its performancedirectly affects the operation safety of SF6 switch The SF6 gas ...

Страница 4: ...rement and 20 value conversion are completed thus dynamic automatic compensation between pressure and temperature is completed It also shows the pressure under the measured ambient temperature the pressure under the ambient temperature at 20 and the ambient temperature The problem of field calibration of SF6 gas density relay is solved thoroughly 2 5 All the testing process is automatically comple...

Страница 5: ...ion of modifying system pressure on line and can be corrected on site 2 14 The core components are imported components with reliable performance 2 15 It can test one set of alarm signals and two sets of locking signals at the same time 2 16 This product is a portable tool easy to use and reliable is the best choice for SF6 density relay calibration 3 Technical indicators 3 1 Power AC220V 50Hz 3 2 ...

Страница 6: ...ty display mode pressure under the tested environment equivalent pressure at 20 3 18 Weight 8kg 4 Panel structure 1 inlet 2 Calibration port 3 Pressure gauge 4 Temperature sensor 5 Power supply 6 power switch 7 USB 8 printer 9 LCD 10 RESET 11 MOUSE 12 release button 13 Signal interface 14 Outlet 5 How to use 5 1 LCD description The instrument adopts 320 240 high resolution gray backlit LCD which c...

Страница 7: ...cation of the position Rotate the mouse to enterthe next modification After the bit by bit modification the cursor increases to full cursor that is to exit the modification of data At this time you can move the cursor away by rotating the mouse 5 3 Instrument instructions When verifying the SF6 density relay on site please use the accessories configured by the instrument to connect the gas circuit...

Страница 8: ...e of single alarm single lock 1 or single lock 2 only the corresponding test signal shall be received and single signal shall be selected on the operation interface and the system will automatically identify If the pressure gauge calibration operation needs to be performed it is necessary to connect the pressure gauge to be calibrated with the measuring port on the instrument panel if the system p...

Страница 9: ...y Basic principle of SF6 density relay calibration the gas pressure in the closed vessel changes with the change of temperature and the relative pressure value of SF6 at 20 is usually taken as the standard value In the field calibration the SF6 pressure value measured at a certain ambient temperature shall be converted to the equivalent pressure value at 20 so as to judge the performance of the de...

Страница 10: ...eturn value slowly deflate at a certain speed When the alarm relay of SF6 density relay acts record the pressure value under the current ambient temperature and convert it into the equivalent pressure value at 20 The equivalent pressure value at 20 is the alarm value of SF6 density relay Verification of blocking value Continue to slowly deflate the SF6 density relay at a certain speed When the loc...

Страница 11: ... the system There are two options system and input System refers to the sensor provided by the system to sense the ambient temperature input refers to the internal temperature of the density relay tested by the user with an infrared thermometer and then manually input The default is system acquisition When the cursor moves to temperature acquisition click Select to switch between the system and in...

Страница 12: ...ps of values on the interface including alarm reply value alarm value lock reply value 1 lock reply value 1 lock reply value 2 and lock value 2 According to the set test times and signal type test results they will be displayed correspondingly PT is the normal temperature pressure value and P20 is the equivalent pressure value converted to 20 Figure 5 After confirming that the external air circuit...

Страница 13: ...p to close the air valve and stop detection If there is no value display when stopping click start to continue detection Otherwise deflate first and then click start If there is a problem in the detection the system will display device failure At this time the user should check whether the connection of the line and the air circuit and the selection of signal type are correct After the test is com...

Страница 14: ...the main interface select normal temperature pressure gauge calibration and click select to enter the normal temperature pressure gauge calibration program as shown in Figure 9 Figure 9 is the parameter setting interface of normal temperature pressure gauge calibration Two parameters temperature acquisition and pressure target value can be set by operating the rotating mouse Figure 9 The setting o...

Страница 15: ... to enter the main interface Figure 11 Figure 11 is the test interface for verification of normal temperature pressure gauge If several groups of test points are preset in the parameter setting interface several groups of default 0 000 values will appear in columns 1 2 3 and 4 of the interface Figure 11 preset three groups of test points the first group is 0 2MPa Start refers to automatic inflatio...

Страница 16: ... will stop as shown in Figure 12 In the process of inflation the status bar will prompt the first test When the preset pressure value is reached it will display detection completed Figure 12 Move the cursor to input in Figure 12 and click the select cursor to move to the input value in the first column as shown in Figure 13 Figure 13 Rotate the mouse left and right to modify the value input the di...

Страница 17: ... 2 Calibration of 20 degree pressure gauge On the main interface select 20 degree pressure gauge calibration and click select to enter the 20 degree pressure gauge calibration program The calibration process of 20 degree pressure gauge is exactly the same as that of normal temperature pressure gauge but there are some differences on the interface 20The parameter setting interface of degree pressur...

Страница 18: ...t pressure value at 20 is also displayed on the current value item as shown in Figure 16 Figure 16 3 Browsing historical data On the main interface select historical data browsing and click select to enter the historical data browsing interface as shown in Figure 17 Figure 17 Select density relay verification test record and click to enter the interface shown in Figure 18 ...

Страница 19: ...d then click to select to enter figure 19 Figure 19 In this interface you can select to view delete and print historical data by turning the mouse left and right Click to return to figure 18 click return to return to figure 17 and click view to enter Figure 20 Figure 20 ...

Страница 20: ...rface select system clock adjustment with the cursor and click select to enter the system clock setting program as shown in Figure 21 Figure 21 The system time can be set in this interface and the left and right mouse cursors can move on the numbers of mm DD yyyy After clicking select the left and right mouse can be rotated to modify the numbers set the time click OK to set the time successfully a...

Страница 21: ...n site disconnect the power supply connected with the density relay to avoid damaging the calibrator 2 Before going to the site bring the tool box check the nitrogen gas storage capacity of the small gas cylinder in the tool box and bring all the transition joints and tools for the switch 3 The corresponding alarm signal line and locking signal line on the terminal strip shall be disconnected from...

Страница 22: ...ough gas to cause corrosion 2 During the transportation of calibrator avoid violent vibration and impact and prevent rain and snow from soaking 10 After sales service All users who purchase our products enjoy the following after sales services Within one month from the date of sale of the instrument if there is any quality problem our company will replace the new meter free of charge but the user ...

Страница 23: ...air Do not disassemble the instrument by yourself otherwise our company will not be responsible for the loss caused 11 List of accessories No name number 1 host 1 2 power charge 1 3 High pressure cylinders 1 4 Intake pipe 180cm 1 5 Measuring gas pipe 180cm 1 6 Vent pipe 120cm 1 7 Transition joint no 1 14 1 8 Inflation adapter No 16 1 9 6Core test line 1 10 Printing paper 2 11 PTFE TAPE 2 12 2A fus...

Страница 24: ...23 Appendix 1Packing diagram of SF6 density relay transition connector ...

Страница 25: ...e inflation connecting rod in the accessory box as shown in the figure As shown in the figure above connect the other end of the connecting rod to the cylinder Precautions for cylinder inflation Nitrogen filling 5MPa for cylinder pressure gauge SF6 gas filling the cylinder pressure gauge pointer is stable and the connecting rod is charged if there is no gas velocity sound ...

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