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Summary of Contents for Huazheng HZ7411
- Page 1 HZ7411 Circuit Breaker Dynamic Characteristic Tester User Manual Huazheng Electric Manufacturing (Baoding) Co., Ltd...
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Page 2: Table Of Contents
Contents I Product technical parameters........................1 1.1 Use environment............................1 1.2 Safety performance..........................1 1.3 Basic parameters.............................1 1.3.1 Time................................1 1.3.2 Speed..............................1 1.3.3 Current..............................1 1.3.4 Closing resistance..........................1 1.3.5 Output Power............................1 1.3.6 Stroke..............................1 II Performance..............................2 2.1 Time................................2 2.2 Speed and stroke.............................2 2.3 Speed and stroke.............................2 2.4 Current and voltage..........................2... - Page 3 8.3 Sensor connection..........................14 IX On-site common problems.........................15 8.4 On-site closing and opening control wiring is incorrect or there is a problem in the control loop15 9.2 The instrument prompts "Power supply current output exceeds limit, over-current protection action"................................15 9.3 The instrument has no DC power output................... 16...
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Page 4: I Product Technical Parameters
I Product technical parameters 1.1 Use environment Input power：220V±10%，50Hz±10% Atmospheric pressure：86～106kpa Temperature:：－10～40℃ Humidity：≦80%RH 1.2 Safety performance Insulation resistance：＞2MΩ Dielectric strength: the power supply withstands the power frequency of the cabinet at 1.5KV for 1 minute, no flashover and flashover 1.3 Basic parameters 1.3.1 Time When the range is selected from 250-4000ms, the resolution is 0.1ms and the error is 0.1ms ±... -
Page 5: Performance
II Performance 2.1 Time The machine can measure the natural parting and closing time of 12 metal fractures, the same period time, the same period time, the same period time, the gold short time, the no flow time, the closing spring time of the process of closing - parting, dividing - parting and dividing - dividing;... - Page 6 ♦ Maximum speed: During the opening (closing) process, after the moving contact starts to move, the moving contact movement is taken as a speed measurement unit every 10ms until the moving contact movement stops, and several speed unit values are obtained. The speed value is the maximum speed of opening (closing).
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Page 7: Panel Layout
user can select the "Custom" option in the parameter setting interface-speed definition option, enter and save a speed definition that conforms to the rules. Alternatively, you can also choose a closer speed definition to measure, and then manually cut out the required rigid opening / closing speed (ratio of travel to time in the sampling section) in the time-stroke characteristic curve in the measurement result. -
Page 8: Menu Operation Instructions
Sensor Motion sensor signal channel ⑪ External trigger signal channel ⑫ Grounding post ⑬ USB communication port ⑭ U-Disk USB storage port ⑮ printer ⑯ LCD screen ⑰ Table 3 V Menu operation instructions The LCD screen of this machine is a 1024 * 600 pixel resistive touch color screen. After booting, the LCD screen enters the home menu interface after playing the boot animation. -
Page 9: General Test Mode
The middle part of the screen is the test mode selection area, providing a total of 8 test modes, which are "Auto Test", "Open Test", "Close Test", "Manual Open and Close", "Open and Close Test", and "Open and Close Test". "," Open and close, "and" low-voltage test. " In the automatic test mode, the instrument automatically selects the opening test or the closing test according to the current port status (the opening test is performed when 1 of the 12-way break is closed). - Page 10 Figure 4 The operation interface is also divided into three areas: the fracture status display area in the upper part, the parameter setting area in the middle part, and the page turning button area in the lower part. The functions of the upper and lower areas are similar to the mode selection interface and will not be described again.
- Page 11 definition, you can first select the "10ms before closing" mode, measure the "time-travel characteristic curve", and then perform corresponding analysis on the curve to obtain the corresponding speed value. ♦ Output voltage: Set the output operating voltage value according to the needs of the field (it is invalid to set this item in external trigger mode).
- Page 12 Figure 5 After setting the test parameters, click the "Start Test" button to perform the test. After the test is completed, enter the data interface (see Figure 6). The parameters shown in the figure are the parameters before the test. Enter the corresponding interface by selecting the button in the upper right corner of the figure.
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Page 13: Manual Opening And Closing
5.1.2 Manual opening and closing Select the "Manual Open / Close" test mode, the screen will switch to the "Start Test" interface in this mode, press the "Input Voltage" button and enter the corresponding voltage value and confirm, and select "Close"... -
Page 14: Data Query
the port status (see Figure 8). VI Data query Click the "Data Query" button to enter the historical data viewing interface. This item is divided into four parts: "test record", "test data", "graphic analysis" and "storage printing", which are basically the same as the interface after the test is completed. -
Page 15: Field Connection
the interface prompts, and will not be repeated here. The “system settings” are the factory parameters of the instrument, which cannot be set by non-production personnel. VIII Field connection Ground and port connections This machine is equipped with a special grounding wire. Please connect the protective ground of the instrument to the field ground before performing other wiring and operations. -
Page 16: Control Line Connection
Control line connection This machine provides 3-core sheathed wires as internal power output conductors (red is the closing conductor, green is the opening conductor, and black is the power common terminal) and 3-core sheathed wires are used as external operating voltage acquisition leads. When the switch-on and switch-off control power is provided by the instrument, disconnect the control power in the switch control box under test (usually disconnect the fuse connected to the control power in the control box and the control bus), but the power supply of the switch mechanism cannot be... -
Page 17: Sensor Connection
When using an external field power supply for the opening and closing control, the "internal power supply" is not wired. When the switch is single-tested, two wires “externally triggered” are connected to both ends of the brake coil; when the switch is single-tested, the two wires “externally triggered” are connected to both ends of the open-circuit coil. -
Page 18: On-Site Common Problems
move in a straight line, and fix the sensor with a magnetic universal bracket. The method is similar for SF6 switch and oil switch. IX On-site common problems 9.1 On-site closing and opening control wiring is incorrect or there is a problem in the control loop Find the control wiring diagram of the on-site control cabinet and ask relevant professionals to find the closing and opening coils and switch auxiliary contacts respectively. -
Page 19: The Instrument Has No Dc Power Output
resistance of the closing coil to confirm that the closing coil current is large. Then please check the wiring carefully, make sure that the closing output is not short-circuited, and then restart after power off. The instrument has no DC power output This kind of situation may be caused by the burnout of the power supply insurance of the instrument and the loss of power supply to the entire instrument.
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