background image

8

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).

♦ Sensor: The sensor needs to set three parameters: type, quantity and position. Types include

displacement and angle; the number defaults to 1 (some models can be set to 3); the position is the

sensor installation position. If it is a displacement sensor, set it to "A phase", " "B-phase" or "C-phase", if it

is an angle sensor, the default setting is A-phase.

♦ Switch stroke: Enter the total stroke value of the switch when using the angle sensor; enter the marked

stroke value of the sensor when using the angle sensor.

♦ Test time: The total test time is the time of the internal DC power output voltage. This time should meet a.

When doing a single opening and closing test, it should meet the inherent opening and closing time of the

device under test; b. When doing a re-closing test, it should meet the inherent opening and closing time

that is greater than the multiple actions of the device under test Sum of time.

♦ Reclosing time: This item needs to be set during reclosing test. The reclosing and closing time is

counted as T closing and closing, and the reclosing and closing time is counted as T closing and closing.

T opening and closing is the period of time from powering on the opening coil to powering on the closing

coil. T closing is the period of time from powering on the closing coil to powering on the opening coil.

Open—T

open-close

—Close—T

close-open

—Open

When you select the "close-to-open" test mode in the mode selection interface, the "General Mode"

and "Special Mode" options will pop up on the right. The above-mentioned reclosing time can optionally

be performed in the normal mode. If special mode is selected, the time parameters T

open-close

and T

close-open

will be automatically set to 0ms and cannot be changed. Because the working mode at this time is that

when any one of the 12 groups of ports detects a closing signal during the closing process, it immediately

stops the closing command and opens the opening command until the test time is reached.

Summary of Contents for HZ7411

Page 1: ...HZ7411 Circuit Breaker Dynamic Characteristic Tester User Manual Huazheng Electric Manufacturing Baoding Co Ltd...

Page 2: ...ormance 2 2 1 Time 2 2 2 Speed and stroke 2 2 3 Speed and stroke 2 2 4 Current and voltage 2 2 5 Closing resistance 2 III Term definitions 2 IV Panel layout 4 V Menu operation instructions 5 5 1 Data...

Page 3: ...5 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 a...

Page 4: ...lution is 0 1ms and the error is 0 1ms 1 word when the range is 10000 20000ms the resolution is 1ms and the error is 1ms 1 word 1 3 2 Speed Range is 20 00m s resolution is 0 001m s error 0 01m s 1 wor...

Page 5: ...rrent value and current waveform of the opening closing coil and provides DC5 270V 10A 20A digital adjustable circuit breaker operation power supply automatically completes the low voltage operation t...

Page 6: ...ition Applicable circuit breaker model 1 10ms after opening before closing Certain oil switches and SF6 circuit breakers 2 5ms each after opening before closing Certain oil switches 3 10ms each after...

Page 7: ...in the sampling section in the time stroke characteristic curve in the measurement result IV Panel layout Figure 1 No Panel logo Function Description socket Instrument AC220V working power switch and...

Page 8: ...There are 6 function area buttons on the homepage which are Data measurement File management Brightness adjustment Time calibration System settings and Serial communication Click the buttons to enter...

Page 9: ...low trip is performed when one of the 12 fractures is closed The user can select the corresponding test mode according to the test requirements and the current fracture state After clicking the mode...

Page 10: ...external trigger The internal trigger mode is to use the internal DC power of the instrument to drive the on off coil of the device under test In the external trigger mode the internal DC source of t...

Page 11: ...g time of the device under test b When doing a re closing test it should meet the inherent opening and closing time that is greater than the multiple actions of the device under test Sum of time Reclo...

Page 12: ...test Enter the corresponding interface by selecting the button in the upper right corner of the figure For example the test data interface contains all the test result data and the graphic analysis c...

Page 13: ...indicator Or open button to operate Figure 7 Figure 7 Figure 8 5 1 3 Low voltage test If you select the Open Close Low Jump test mode the screen will switch to the Start Test interface in this mode a...

Page 14: ...ue display areas of t1 and t2 are white Clicking on any one of the white areas will change the background color the background color of t1 becomes pink and the background color of t2 becomes light gre...

Page 15: ...a special grounding wire Please connect the protective ground of the instrument to the field ground before performing other wiring and operations After the test turn off the power of the instrument r...

Page 16: ...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...

Page 17: ...de the switch body When the switch manufacturer leaves the factory for speed tests the switches are tested on the switch opening and closing indicators or rotary shafts In this case angle sensors are...

Page 18: ...tion function to start and the instrument closes and opens the control power has no output Shut down at this time and check the wiring again according to the first item above b The instrument may not...

Page 19: ...as 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 At this time the replace...

Reviews: