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13801861238
當(dāng)前位置：> 供求商機(jī)> LY803Q-Relay Tester
貨物所在地：上海上海市
所在地： 上海市閘北區(qū)汶水路8號(hào)
更新時(shí)間：2024-10-13 21:00:05
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LY803 series relay tester is the Shanghai Laiyang Electric Technology Co.,LTD., the reference to the Electric Power Industry Standard of the People 's Republic of China "DL/T624-1997 protection microcomputer test technical conditions widely listen to the views of the user on the basis of conscientiously sum up the years accumulation of product development and production experience , using the latest electronic technology developed by a new generation of protective relay test device.
Characteristics of Product：
1. The industry 's first true color touch screen + keying operation more handy
This machine uses an 8 - inch color touch screen , with self-designed keyboard , faster, more handy , the same time, the program began to experiment with automatically turn off the touchscreen to prevent any misuse .
2、The industry 's first built-in single-channel embedded analog circuit breaker
The analog circuit breaker protection devices for the entire group of tests as well as alternative to the real high-voltage circuit breaker in the standby power source device test project . Analog device for the machine 's built-in microcomputer relay protection test system supporting products , especially in the new power plant , substation high-voltage circuit breaker did not fine or DC power is not cast , use the built-in analog circuit breaker relay protect the test will not be subject to external factors , which shorten debug time and improve test efficiency .
3、Embedded host machine equipped with Complex Programmable Logic Device (CPLD)
The host machine adopts a high-speed and high-performance embedded microcomputer system equipped with a CPLD, so it has high response speed, wide transmission band and can producing high-density fitting sine wave with 500 points per cycle for the fundamental wave. The output waveform is smooth, and no harmonic component exists. Since there are a great number of output points and accurate filtering circuit is used, the distortion of the waveform is very small. In a harmonic output process, a high density of 55 points per cycle can be achieved for even the ninth harmonic at 450Hz. Meanwhile, the software has very powerful man-machine conversation and on-line assistance functions, and can control any test parameter.
4、Stand-alone 8 - channel D / A output simultaneously
16-bit precision DAC chip , fitting waveform of high precision , good linearity . 8 analog signals can be output simultaneously to meet the all-round test of transformer protection , standby power source .
5、High-precision linear amplifier, the output phase voltage and phase current.
Careful design voltage, a current amplifier to achieve DC / AC shared output stage utilizes a unique high precision ultra-linear amplification techniques . High precision , good reliability , while output of 5-phase AC voltage and 3 -phase alternating current , per phase AC voltage output up to 130V , 70VA AC current full- and output up to 90A . DC voltage output up to 300V, 130VA.
6、Interface complete host integration single chassis structure
The system operator interface and test results show the whole Chinese All procedures were set in the display, clear and intuitive display. The device is available comes with a touch screen and keyboard operation, and also to provide an external keyboard / mouse port. Also provides two USB ports, two RS232 ports, can communicate with an external computer and other equipment. Just 220V AC power supply, the boot can work. Easy to carry, ideal for flow test and field work.
7、The auxiliary dc source (optional )
Native optional separate two DC power group 110VDC/1.0A, another group 220VDC/0.6A, the boot automatically output, can be used to protect the power supply, no need to set up and adjust by software.
8、Inligent self-protection
A radiating structure of the latest design is used to ensure excellent ventilation state. Phenomena endangering the safety of the device, such as overcurrent, overvoltage, overload, short circuit, over-high temperature and data abnormity can be judged at the same time, and even faulty operation does not go so far as to damage the device. Besides, the alarming indicating lamp of the device turns red and the amplifier is switched off automatically when danger signal, such as external voltage enters the tester through a terminal.
9、Rich contacts and the ability of the test is applicable
The device has eight switch inputs (A B C R a b c r) and four switch outputs. The input contact is compatible with the idle contact and the 0-250Vdc electric potential contact, and can be recognized inligently.
10、Placed flexible and powerful software
The device can be placed vertically or horizontally, and allows off line operation as well as operation with externally connected PC machine. The test result can be sorted out and recorded automatically into a test report for easy reference, and can also be directly stored in a U disk, so it can be conveniently transferred to the externally connected PC machine for editing, printing, etc. The software can be upgraded simply and rapidly through the U disk or through downloading of the externally connected PC machine without modifying any hardware. The software has powerful auxiliary computing function, and can automatically calculate positive, negative and zero-sequence voltages and currents and primary and secondary active power, reactive power and power factors. Optional built-in GPS module, you can synchronize the system debugging with an external antenna.
Rated output | Frequency error | ＜±0.01Hz | |
Phase error | ＜±0.2° | ||
Waveform distortion | ＜±0.3%(fundamental wave) | ||
Time error | ＜40µs | ||
Output frequency | 0～1000Hz | ||
Power voltage | Allowable range | AC220V±10%, 50Hz±10% | |
Ambient temperature | Use range | 0～40℃ | |
Storage range | －20～70℃ | ||
current output | AC | Phase current output (effective value) | 0～30A/phase |
Maximum parallel current output (effective value) | 0～90A | ||
Long-term allowable working value of phase current (effective value) | ＜＝10A/ phase | ||
Allowable working time of maximum current | ＜＝10s | ||
Accuracy | ＜±0.2% | ||
Load voltage | ＜20V | ||
Maximum output power | 250VA/phase | ||
Superposed harmonic wave | 0～21tmins | ||
voltage output | AC | Phase voltage output (effective value) | 0～130V/phase |
Line voltage output (effective value) | 0～260V | ||
Accuracy | ＜±0.2% | ||
Maximum output power | 70VA/phase | ||
Superposed harmonic wave | 0～21times | ||
DC | Output range | 0～300V | |
Accuracy | ＜±0.2% | ||
Maximum output power | 130VA | ||
Time measurement | Test range | 0.1ms～3600s | |
Binary input | Idle contact | 1～20mA，24V（DC） | |
Electric potential contact | 0～250V（DC） | ||
Binary output | Idle contact | 250V/0.3A（DC） | |
Dimension of cabinet | length×width×height | 360mm ×195mm ×380mm | |
Weight of cabinet | Weight of host machine | 16kg | |
Voltage output: correspondingly connect Ua, Ub, Uc, Ux, Uy with the tested device one by one. Un is voltage grounding terminal.
Ground terminal: Be used to reliably connecte the earth.
Input contactt: A, B, C, and N common terminal.
Input contact can then empty contact, you can also access the 10 ~ 250V charged bit contact. Generally, A, B, C are respectively connected protected jump A, jump B, jump C contacts , R connection protection reclosing contact .
Note: Live contact, the DC power supply + end, namely the control source + KM must be connected to the end of the ( N ). DC power supply allows the voltage from 0 to 250 volts. As shown in figure:
Output contact: 1, 2, 3 and 4 are dry contacts whose contact capacity is 250V/2A. Their states are controlled by the software.
Current output: Gennerally, correspondingly connect IA, IB, IC, and In with the tested device one by one. IN is current grounding terminal（When two-phase (or three-phase)of IA, IB, IC, parallel output large current，please keep three IN terminals shorted）.
Overvoltage alarm indicating lamp：Rated operating voltage of the device is AC 220V. When the external power supply voltage exceeds 250V, the device slef-protect and the indicating lamp is on.
IA IB IC AC current source open alarm indicating lamp：
When open the amplifier and start to send analog current source in the open state, the corresponding lamp is on, but the device does not self-protect.
UA UB UC UX UY Voltage source short circuit alarm indicating lamp:
When open the amplifier and start to send analog voltage source is in the short state, the corresponding lamp is on, and the device self-protect.
T Temperature alarm indicator lamp：
When the internal temperature of the tester is too high to exceed the Safe range because of the large current, the indicating lamp is on, the device self-protect and the amplifier will be closed.
The interface on the upper cover of the tester:
PS2: External 101 computer keyboard and mouse to operate the device software.
USB: Can insert U disk copy of the test report or for software upgrades.
COM1, RS232: Connected to a PC using the Windows operating software.
COM2, RS232: Can be used to synchronize on the external GPS receiver. (Built-in GPS module, this port is reserved).
Input contact: trip, GND, close.
Indicating lamp: 110V0.5A, 110V1A, 220V0.5A, 220V1A. Current voltage and operating current selection indicating lamp.
Control switch: Turn on or turn off the power, and select the operating current.
Action Time：Set the operating time. The range is 0-200ms.
Auxiliary contact: Indicates the current the analog circuit breaker switch position (trip, GND, recluse).
Now take the RCS-9612A circuit protection device as an example, to introduce how to connect the built-in analog circuit breaker duiring reclosing experiment.
Note: This module applies to 110KV and the following protection. If you want to do to the split-phase tripping test for more than 220KV, please connect other analog circuit breaker.
Boot : power switch - -> amp switch
Shutdown: amp switch - -> power switch
You can open the power output switch，after the tester has started compley.
In order to ensure the reliability of the machine housing connected to the earth, the introduction of an external power supply line must use a three - wire power cord!
In addition, it also provides a ground terminal, and can be used to pick the earth. Corresponding logo 
。
If the device under test is in the running scene, set the scene of the current transformer (CT) and voltage transformer (PT) circuit protection devices untied by strong interference to prevent the device can not be properly tested.
After startup, the relay tester will enter the main menu as follows:
If you select TestMainmenu option, the program will enter Test Center interface. The details of each test function menu, please refer to the following chapters.
If you select System Management option, the program will enter the following interface, and provide four functions.
2.1 Copy Report Through U-disk
Using this function, all test reports, which have be stored in the device, will copy to AT_REP directory of the U-disk. Please follow these steps:
2.2 Upgrade Software Through U-disk
Please follow these steps:
2.3 Initialize The Menu Settings
Using this function, you will be asked to enter the password to confirm. And then the program will set all the parameters of the test function subroutines back to factory value.
Using this function, you will be asked to enter the password to confirm. And then the program will delete all of the test reports.
2.5 Open or Close the Touch Screen
Select this function, the program will turn off the touch screen. Repeat this operation, the program will pen the touch screen. Please use the keyboard to operate when the touch screen is closed,
This subprogram can control the 5-phase AC voltage, 3-phase AC current arbitrary output and changes. Amplitude, angle and frequency of every phase analog can be arbitrarily adjusted and change. These parameters can also be modified during the test. This subprogram can measure action time and action value, by manually or automatically. This subprogram allows users to implement their own test methods designed to meet most of the site requirements.
The main interface is divided into five regions:
2.1.1 Key operation and shortcuts Description
2.1.2 Menu Description
Voltage Ua, Ub, Uc, Ux, Uy, Current Ia, Ib, Ic:
Each analog comprises 10 parameter setting: amplitude, amplitude variable, step of amplitude, whether DC output, phase, phase variable, step of phase, frequency, frequency variable, step of frequency.
Test mode: The control method of the test.
Timer limit: Effective in manual mode. When user push [Pgup] or [Pgdn] key to measure time, the program will plus a step of variables, and start a timer at the same time. The maximum time to wait for action called "timer limit". In order to guarantee the operation of the test results are correct, the value of time limit should be greater than the relay option (or return) time.
Step time: Effective in Automatic mode. The waiting time of the change the variables one time.
2.1.3 Test principle and test process description
☆ In manual mode, the program will output the initial value of the voltage, current and frequency.Then the test is controlled by the user. Operation can be carried out as follows:
☆ In automatic mode, the program will output the initial value of the voltage, current and frequency. The program gradually increased variable, depending on the speed set by the "step time". If the protection device has been operating, the program will gradually reduce the value of the variable, until the protection device to return, and then record its action value and return value. During this period, if the variable is added to the maximum value (or reduced to the minimum value), and the protection device is no action, the software automatically exit test.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subporgram can be used to test voltage protection function and current protection function of protection devices. Manual and automated test voltage relays, current relays.
The main interface is divided into five regions:
2.2.1 Key operation and shortcuts Description
2.2.2 Menu Description
Output Page:
Voltage Ua, Ub, Uc, Ux, Uy: Set the amplitudes and angles.
Current Ia, Ib, Ic: Set the amplitudes and angles.
Frequency: Set the frequency of the analog.
Note: During the test, output of those selected analogs is automatically calculated and changed by the program. While the other of the amount of output, according to the setting of this page.
Control Page:
Test mode: The control method of the test.
Variable Select: Select the analog change in the test process. You can select the amplitude, angle and frequency of 5-phase voltage and 3-phase current.
Initial value: Effective in Automatic mode. Set the initial value of the variable.
Final value: Effective in Automatic mode. Set the final value of the variable.
Variable step: Effective in Automatic mode. Set the step value of the variable.
Test stop: Effective in Automatic mode. Set the step value of the variable. During the test, if the program confirms that the relay action, the program according to the parameter to determine whether to continue the test:
Step time: The waiting time of the change the variables one time.
Confirm time: In order to avoid the jitter of the input contact impacted on the test results, program will recognize protection device or relay action (or return), only contact action over this confirm time.Default: 200 ms.
Output contact: After the start of the test, the four pairs of output contacts will go into the user setting state, closed or opened.
First Variable: Effective in Manual mode. Select the first variable and set its step.
Second Variable: Effective in Manual mode. Select the second variable and set its step.
Third Variable: Effective in Manual mode. Select the third variable and set its step.
Auxiliary Page:
Connection: Ｙ／Ｙ－１２,Ｙ／△－１１,Ｙ／△－１.
RatedCapacity: Set transformer rated capacity.
HighSideVoltage: Set the voltage of high side of the transformer.
LowSideVoltage: Set the voltage of low side of the transformer.
HighSideRatio: Set the ratio of high side of the transformer.
LowSideRatio: Set the ratio of low side of the transformer.
CurrentRatio: According to the setup program automatically calculates the rated current ratio.
HighSideCurrent: Set current of high side.
LowSideCurrent: Set current of low side.
2.2.3 Test principle and test process description
☆ In manual mode, the program will output the initial value of the voltage, current and frequency. Then the test is controlled by the user. Operation can be carried out as follows:
☆ In automatic mode, the program will output the initial value of the voltage, current and frequency. The program gradually increased variable, depending on the speed set by the "step time". If the protection device has been operating, the program will gradually reduce the value of the variable, until the protection device to return, and then record its action value and return value. During this period, if the variable is added to the maximum value (or reduced to the minimum value), and the protection device is no action, the software automatically exit test.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used to manually or automatically test the action value, return value, action time of the DC relay or Time relay.
The main interface is divided into five regions:
2.3.1 Key operation and shortcuts Description
2.3.2 Menu Description
Output Page:
DC Voltage: The initial value of the DC voltage output. Displays the output value of DC volotage in the testing process.
Maximum DCV: Effective in Automatic mode. The maximum output value of the DC voltage.
DCV step: Set the step value of the DC voltage.
DCV drift: The actual measured value of DC voltage, when it is set to 0. If the output deviates from the set value, you can set this parameter.
DC Current: The initial value of the DC current output. Displays the utput value of DC current in the testing process.
Maximum DCI: Effective in Automatic mode. The maximum output value of the DC current .
DCI step: Set the step value of the DC current.
DCI drift: The actual measured value of DC current, when current is set to 0. If the output deviates from the set value, you can set this parameter.
Control Page:
Variable Select: Select the analog change in the test process. DCV, DCI, or DCV&DCI.
Test mode: The control method of the test.
Test stop: Effective in Automatic mode. Set the step value of the variable. During the test, if the program confirms that the relay action, the program according to the parameter to determine whether to continue the test:
Step time: Effective in Automatic mode. The waiting time of the change the variables one time.
Timer limit: Effective in manual mode. When user push [Pgup] or [Pgdn] key to measure time, the program will plus a step of variables, and start a timer at the same time. The maximum time to wait for action called "timer limit". In order to guarantee the operation of the test results are correct, the value of time limit should be greater than the relay option (or return) time.
Confirm time: In order to avoid the jitter of the input contact impacted on the test results, program will recognize protection device or relay action (or return), only contact action over this confirm time.Default: 200 ms.
DCVcompensation: If the DC voltage output accuracy is not allowed, you can set the parameters.
DCIcompensation: If the DC current output accuracy is not allowed, you can set the parameters.
2.3.3 Test principle and test process description
☆ In manual mode, the program will output the initial value of the voltage, current and frequency. Then the test is controlled by the user. Operation can be carried out as follows:
☆ In automatic mode, the program will output the initial value of the voltage, current and frequency. The program gradually increased variable, depending on the speed set by the "step time". If the protection device has been operating, the program will gradually reduce the value of the variable, until the protection device to return, and then record its action value and return value. During this period, if the variable is added to the maximum value (or reduced to the minimum value), and the protection device is no action, the software automatically exit test.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used to test the action value, action time, or slip characteristics of the frequency relays or the low-frequency load shedding devices.
The main interface is divided into five regions:
2.4.1 Key operation and shortcuts Description
2.4.2 Menu Description
Item Page:
Test item: Choose whether to do the following items:
Analog selection: Select the analogs which will change frequency.Provides three options: voltage¤t, voltage, current.
Conversion type: Continuous, Frequency changes continuously. Per Cycle, Frequency changes after per cycle.
Delay time: Each time before change, the program will send analog of non-fault (50Hz) in this delay time.
Fault time: The time waiting for the operation of the protection devices.
Interval time: The time sending analog to zero.
VoltageUa, Ub, Uc, CurrentIa, Ib, Ic: The amplitudes and angles.
Action Page:
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the frequency.
Step: Changing the frequency value of each time.
df/dt: The rate of change of frequency.
Action setting: The aciton value setted in the portection device.
Time Page:
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the frequency.
df/dt: The rate of change of frequency
Door frequency: At this door frequency, the program will start the timer of aciton.
Time setting: The time of aciton value setted in the portection device.
df/dt Page:
Initial df/dt: The initial value of df/dt
Final df/dt: The final value of df/dt
Step: The step of df/dt.
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the test frequency.
df/dt setting: The df/dt value setted in the portection device.
df/dt Page:
Initial df/dtThe initial value of df/dt
Final df/dt The final value of df/dt.
Step: The step of df/dt
Initial voltage: The initial value of the voltage.
Final voltage: The final value of the voltage.
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the test frequency.
df/dt The rate of change of frequency.
Low-V Page:
Initial voltage: The initial value of the voltage.
Final voltage: The final value of the voltage.
Step: The step of voltage.
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the test frequency.
df/dt: The rate of change of frequency..
Voltage setting: The value of low voltage protection setted in the portection device.
Low-I Page:
Initial current: The initial value of the current.
Final current: The final value of the current.
Step: The step of current.
Initial frequency: The initial value of the frequency.
Final frequency: The final value of the test frequency.
df/dt: The rate of change of frequency.
Current setting: The value of low current protection setted in the portection device.
2.4.3 Test principle and test process description
Frequency will slide from 50HZ to the final frequency. After reaching the current search frequency, program will waite for a fault time. If the protection device triped, record action value. Otherwise, the current search frequency plus a step to continue to search..
Frequency will slide from "Initial frequency" to "Final frequency". The rate of change of frequency decided by "df/dt". When frequency getting to the “door frequency”, the timer will be started, until device action.
Curve II: the value of df/dt setted in the portection device. This threshold can not guarantee reliable operation.
Curve I: The value of df/dt is less than the threshold value. Device can be reliably actions.
Curve III: The value of df/dt is more than the threshold value. Device can not action.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used to test I(t) action characteristic of inverse time-limit overcurrent relay, or U(t) action characteristic of inverse time-limit overvoltage relay.
The main interface is divided into five regions:
2.5.1 Key operation and shortcuts Description
2.5.2 Menu Description
Control Page:
Test item: Choose whether to do the following items: I-t test or U-t test.
Output mode: Please set output mode of the current,during the test. If the current is large, it is recommended to select two or three output.During the test The test process, the current phase of the parallel phase is automatically adjusted to the same, equal to "reference angle".
Test range: The range of variation of the test current (start, end).
Variable step: Changing values ??in each variable change.
Reference angle: The angle of the current output.
Fault time: The time waiting for the operation of the protection devices.
Interval time: Duration of interval state.
Interval Current: Current output value during the interval state.
Other Page:
Voltage Ua: A-phase voltage output value during the test.
Ub: B-phase voltage output value during the test.
Uc: C-phase voltage output value during the test.
Frequency: The frequency of voltage & current.
Output Contact: After the start of the test, four pairs of output contacts go into the user setting state, close or open.
2.5.2 Test principle and test process description
After the start of the test, the test voltage will change a step from the starting point, test the voltage relay action value.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used for checking setting values of three-section overcurrent, three-section zero sequence current, etc. of the protective device below 110kV (35kV or10kV).
The main interface is divided into five regions:
2.6.1 Key operation and shortcuts Description
2.6.2 Menu Description
Control Page:
OvercurrentI segment: Overcurrent I segment related parameters: select the test, setting value, setting time, reference voltage, reference angle.
Overcurrent II segment: Overcurrent II segment related parameters.
OvercurrentIII segment: Overcurrent III segment related parameters.
Zero sequence current I: Zero sequence current I related parameters: select the test, setting value, setting time, reference voltage, reference angle.
Zero sequence current II: Zero sequence current II related parameters.
Zero sequence current III: Zero sequence current III related parameters.
Overcurrent accelerateOvercurrent accelerate related parameters.
Zero sequence accelerate: Zero sequence accelerate related parameters.
Overload: Overload related parameters.
Test point 1: The actual test value equal to the test point2 multiplied by the setting value.The result is displayed as the action time1.
Test point 2: The actual test value equal to the test point2 multiplied by the setting value.The result is displayed as the action time2.
Startup mode: Select the startup mode. Offers three options: Delay time, User comfirm, Contact r flip.
Pre-fault time: Time to wait before the start of the test.
Interval time: After each failure, time of interval state.
Phase Page:
Overcurrent I segment: Select the test phase: Phase A, Phase B, Phase C.
Overcurrent II segment: Select the test phase: Phase A, Phase B, Phase C.
Overcurrent III segment: Select the test phase: Phase A, Phase B, Phase C.
Overcurrent accelerate: Select the test phase: Phase A, Phase B, Phase C.
Overload: Select the test phase: Phase A, Phase B, Phase C.
Zero sequence current I: Select the test phase: Phase A.
Zero sequence current II: Select the test phase: Phase A.
Zero sequence current III: Select the test phase: Phase A.
Zero sequence accelerate: Select the test phase: Phase A.
2.6.3 Test principle and test process description
After the start of the test, the test status and test results of the corresponding items will be displayed during the test.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used to automatically test power direction characteristic and power direction relay of the protective device.
The main interface is divided into five regions:
2.7.1 Key operation and shortcuts Description
2.7.2 Menu Description
Item Page:
Test Item: Select the test item to be done. Offers three options: Action boundary, Action curren, Action voltage, Action time.
Analog selection: Select the test phase of voltage and current. Offers three options: Ia Ubc, Ib Uca, Ic Uab.
Fault time: The time waiting for the operation of the protection devices.
Interval time: The time sending analog to zero.
Confirm time: In order to avoid the jitter of the input contact impacted on the test results, program will recognize protection device or relay action (or return), only contact action over this confirm time.Default: 200 ms.
Boundary Page:
Fault voltage: The value of fault voltage during the test.
Fault current: The value of fault current during the test.
Initial angle: The angle of the scanning start, the voltage leads as positive.
Final angle: The angle of the scanning stop.
Step: The step of angle of the scanning.
Test precision: Meet this test precision, the search will stop.
Angle setting: The sensitive angle setting of the device.
Voltage Page:
Fault current: The value of fault current during the test.
Initial voltage: The value of initial voltage of the scanning.
Final voltage: The value of final voltage of the scanning.
Test precision: Meet this test precision, the search will stop
Initial angle: The angle of voltage during the test.
Voltage setting: The voltage setting of the device.
Current Page:
Fault voltage: The value of fault voltage during the test.
Initial current: The value of initial current of the scanning.
Final current: The value of final current of the scanning.
Test precision: Meet this test precision, the search will stop
Initial angle: The angle of current during the test.
Current setting: The current setting of the device.
Time Page:
Fault voltage: The value of fault voltage during the test.
Fault current: The value of fault current during the test.
Initial angle: The angle of current during the test.
Time setting: The action time setting of the device.
2.7.3 Test principle and test process description
Action boundary: Program will test and record the state of the protection or relay when the initial value of the angle. Then program will counterclockwise search action boundary 1. After that, program will clockwise search action boundary 2 from the angle of the initial value. Finally, program will calculate the sensitive angle to complete the testing.
Action curren: Current value is increased from zero, and search action current.
Action voltage: Voltage value is increased from zero, and search action voltage.
Action time: Program will first send an initial zero state, and then sent to action voltage (rated voltage), and start the timer, if protection device action, then get action time.
This subprogram is used to the operation boundary of the test impedance relay under different short-circuit currents, Z(I) precision current characteristic.
The main interface is divided into five regions:
2.8.1 Key operation and shortcuts Description
2.8.2 Menu Description
Control Page:
Output mode: Output of the voltage and current, during the test.
Rated current: The rated operating current of the impedance relay (or protection device).
Initial current: The initial value of current, during the test.
Final current: The maxium value of current, during the test.
Step: Set the step value of current.
Maximum impedance: When searching for the impedance of the boundary corresponding to the current point, the scanning lines of the search starting point determined by the maximum scan impedance and impedance angle..
Characteristic angle: The sensitive angle of impedance relay.
Test precision: Meet this test precision, the search will stop.
Others Page:
Fault time: The time waiting for the operation of the protection devices.
Interval time: The time sending analog to zero.
Confirm time: In order to avoid the jitter of the input contact impacted on the test results, program will recognize protection device or relay action (or return), only contact action over this confirm time.Default: 200 ms.
Output contact: After the start of the test, the four pairs of output contacts will go into the user setting state, closed or opened.
2.8.3 Test principle and test process description
The test process using constant current (short-circuit current is constant). During the test, the starting point of each scan line scan maximum the scan impedance point (as determined by the maximum the scanning impedance and impedance angle, generally should ensure that its action outside the region) and finish at the axis origin (0,0).
After the trial began, the first search of rated current at the boundary action impedance Ze:
☆ If you find Ze, officially starts from the current starting point, point-by-point search at the current point border action impedance
☆ If you do not find Ze, the end of the trial
The boundary action impedance of each of the current point search process is as follows:
Started by the scan start point along the scanning starting point, the scanning start point of 1/2, 1/4 scanning start point, ..., gradually check protection action, until the two actions is found opposite the impedance points: one operating point, an action point:
☆ Once you find the above two points, its endpoints, the dichotomy search gradually approaching action impedance boundary until you meet the test accuracy, the end of the search of the boundary points
☆ If you have arrived scan endpoint, namely the origin (date) to meet the test accuracy, and still did not find more than two points, then the the action boundary point is not the scan line, or there may be more than two boundary points, ending the border point search.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram can be used to automatically test the impedance characteristic of microcomputer protective device and action boundary, i.e., Z(φ) action boundary characteristic of impedance type relay (including impedance relay and power direction relay).
The main interface is divided into five regions:
2.9.1 Key operation and shortcuts Description
2.9.2 Menu Description
Setting Page:
Test selection: Choose the measured protection device impedance characteristics shape: Circular Characteristic (including oval), Qradrangle Charactristic.
Setting Z1: First tuning impedance polar form of circular: amplitude, angle.
R1+jX1: First tuning impedance Cartesian form of circular: resistors, reactance.
Setting Z2: Second tuning impedance polar form of circular: amplitude, angle.
R2+jX2: Second tuning impedance Cartesian form of circular: resistors, reactance.
Setting R: The tunning resistor of qradrangle.
Setting X: The tunning reactance of qradrangle.
Scan Page:
Center Impedance: Scanning center impedance polar form: amplitude, angle.
Ro+jXo: Scanning center impedance Cartesian form: resistors, reactance.
Scanning area: Scanning angle area: start angle and end angle
Step: Scanning angle step.
Radius: The radius of scanning circle.
Scanning range: The scanning line in the scanning radius K% to * search..
Precision: Meet this test precision, the search will stop.
Testing type: Provides two options: Dynamic Test (Before the failure, the pre-fault current output in the form of pulse) .Static Test (Before the failure, do not send a pre-fault current, but a fault current).
Fault Page:
Fault type: Provides seven options: Groundfault AN, Groundfault BN, Groundfault CN, Phasefault AB, Phasefault BC, Phasefault CA, Phasefault ABC.
Fault direction: Provides two options: Forward fault, Reverse fault.
Fault current: The value of fault current during the test.
ZeroSequence Compensation: Zero-sequence resistance coefficient Kr, Zero-sequence reactance coefficient Kx of the zero sequence impedance
Pre-fault time: During the pre-fault time, program output pre-fault current and pre-fault voltage.
Fault time: The time waiting for the operation of the protection devices.
Confirm time: In order to avoid the jitter of the input contact impacted on the test results, program will recognize protection device or relay action (or return), only contact action over this confirm time.Default: 200 ms.
2.9.3 Test principle and test process description
After the start of the test, the angular step from starting angle to ending angle start scanning search K% to * of each scanning line scanning radius. In general, you should guarantee that the scan radius K% is located in the action area, and * in the action area, namely the scan line must be compley covered actions boundary.
Dichotomy principle For general scanning line testing, the program search Actions boundary point, the search process is as follows:
1) the start of test scan line;
2) the end of the test scan lines;
3) according to the starting point and end point of the action, to determine the next step in the search action:
☆ the two action case, the boundary points not scan online, or there may be more than two boundary points, the end of the search of the boundary points
☆ the two actions is different, then the action the boundary points of the scan line, enter the dichotomy search, gradually approaching the boundary point, after the end of the search of the boundary of the action until it meets the test accuracy.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
This subprogram is used to simulate the DC harmonic superposition process.
The main interface is divided into five regions:
2.10.1 Key operation and shortcuts Description
2.10.2 Menu Description
Ua Page:
0-21 harmonics of the phase A voltage: amplitude, phase.
Ub Page:
0-21 harmonics of the phase B voltage: amplitude, phase.
Uc Page:
0-21 harmonics of the phase C voltage: amplitude, phase.
Ia Page:
0-21 harmonics of the phase A current: amplitude, phase.
Ib Page:
0-21 harmonics of the phase B current: amplitude, phase.
Ic Page:
0-21 harmonics of the phase C current: amplitude, phase.
Ceof Page:
Compensation coefficient of 0-21 harmonics of current and voltage.
Others Page:
Variable select: The variable during the test.
Harmonic number: harmonic number of variable during the test.
Test mode: Provides two options: Automatic mode, Manual mode
Variable initial: The initial value of variable.
Variable fina: The fina value of variable.
Step time: The waiting time of the change the variables one time.
Time limit: The maximum time for each test.
Voltage output: Selection voltage output channel: Firs group(Ua,Ub,Uc); Second group(Ux,Uy,Uz).
Current output: Selection current output channel: Firs group(Ia,Ib,Ic); Second group(Ix,Iy,Iz).
2.10.3 Test principle and test process description
After the start of the test, the program will output voltage and current setted by the user. Users can push [↑ ↓] to subtraction variable, and push [Esc] to exit test.
After the test is completed, the tester automatically into the standard stateThere is no output of the voltage and current.The users save prompts can be saved test report.
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