Overview of PS93 type digital three-phase power meter
PS93 type digital three-phase power measuring instrument is the use of digital sampling technology and computer technology, can accurately measure the three-phase voltage and current of electrical equipment, power, power factor and frequency, all the parameters are the true effective value, measurement accuracy Zero point five Class, has the advantages of high precision, convenient use, light and beautiful etc.. By using liquid crystal display, easy reading. Applicable to all kinds of electrical appliances, electric appliances, transformer, AC power supply, electric welding equipment manufacturers in the production line, quality inspection departments and laboratories, standards and Metrology departments, inspection and power sector.
PS93 type digital three-phase power meter specifications and technical characteristics
The technical parameters of 2.1
The basic error measuring range
Phase voltage 10.0~300.0V (. Zero point two five % reading +0.25 % range)
Line voltage 10.0~500.0V (. Zero point two five % reading +0.25 % range)
Electric current 0.50~20.00A (. Zero point two five % reading +0.25 % range)
A/B/C phase power 0.50~10kW (. Zero point two five % reading +0.25 % range)
Combined power 1000~20000W (. Zero point two five % reading +0.25 % range)
power factor 0.5~1.0 . Zero point zero three ( 50V; 1A Above)
2.2 conditions of use
temperature 5~30 C
The relative humidity is not more than Seventy-five %
Power exchange 220V . Ten % 50Hz
2.3 power consumption <30W
2.4 dimensions Two hundred and sixty ( Mm *) Three hundred and seventy ( Mm *) One hundred and twenty-four ( Mm )
The weight is about 2.5 10kg
PS93 type digital three-phase power meter structure and working principle
3.1 instrument function key layout
3.1.1 panel
The front panel of the front panel consists of: One A liquid crystal display screen, Sixteen Alarm indicator lights.
3 buttons, One A power switch, One A multi-function knob.
1 display: all test parameters will be displayed on the display screen. Include A Phase, B Phase, C And the combination of voltage and current, power, power factor and frequency.
2 alarm lamp: current and power on the lower limit of the gauge in alarm indicator lamp will only display. Include A Phase, B Phase, C And on the limit of current and power.
3: press the power switch power supply can be switched on the instrument, the instrument can cut off the power pop.
4A/B/C/ Sigma: this button is used to toggle the display of the content, press this button A/B/C/ Switch between sigma.
5 function switch key: in the test mode, press this button, display the current test frequency, the release will return to the test state. In setting the minimum power state, press this button and multifunctional rotary knob, power setting will be 100W The interval changes.
6 start / Reset button: this button is used as a testing power reserve, temporarily useless.
More than 7 function knob: used to enter the set state and adjust the current and power limit.
3.1.2 rear
The rear panel rear panel with a communication interface, a power socket (with fuse), and Twelve A measuring terminal.
1 communication interface: communication interface can be selected.
2 power input: input power instrument.
3C test terminal connection C The test line.
4B test terminal connection B The test line.
5A test terminal connection A The test line.
3.2 working principle
The instrument can be divided into four parts
The range of input voltage and current conversion size conversion input for acceptable instrument. A/D Conversion of the input signal by the analog signal into digital signal chip microcomputer acceptable. Single chip microcomputer control center equipment, conversion, processing of the input signal and the output operation, judgment, and measuring the output to the display. The output will display the output of the single-chip microcomputer data display, in order to observe.
The use and operation of PS93 type digital three-phase power meter
4.1 preparation and inspection before operation
Before the first use of the instrument, you should first read the article Three And No. Four Safety precautions page. In the packaging box is opened for the first time to deal with the instrument, according to the user manual attachment list to check whether all intact instrument accessories. Before the power is first turned on the instrument, you should ensure that the rated supply voltage of power supply and the instrument.
4.2 safety precautions before use and use and explain
Safety precautions: before the first use of the instrument, you should first read the article Three And No. Four Safety precautions page. Do not remove from the instrument shell, there is high pressure inside the instrument in some places, very dangerous. When the instrument needs internal inspection or debugging, please contact the Tang Chi Electronics Co. Ltd with recent safety standard instruments or agents in Shanghai. If you find the instrument smoke or a bad smell, cut off the power and unplug the power plug immediately. Standard contact Electronics Co. Ltd. and security as soon as possible. Preventive measures: warning wiring to avoid injury, before connecting the measured object must ensure good grounding. The object is connected with the instrument before, must cut off the power supply of the object to be measured, when the measured object is charged not connected with the instrument or remove from the instrument, otherwise it may cause serious accidents. When the power switch is open, do not use the maximum rated current and voltage higher than the allowable value of the voltage or current. For the sake of safety, should ensure that the measurement and measurement of connecting line terminal connection security.
Note: when measuring large current or voltage or current contains high frequency components, wiring should pay special attention to each other may produce interference and noise. The guide wire is as short as possible. Measuring the current as far as possible the use of thick wire. In order to reduce the distributed capacitance, conductor and ground wire as far as possible from the instrument shell.
The warning notices warning: measuring circuit wiring wiring connected to the power supply end of the instrument must be confirmed without power input, ensure the personal safety of the terminal. Thick lines along the side of the current flowing through the load current, so the wire must have enough current to allow the.
open / Cut off the power supply
Switch position: the power switch is located at the lower left corner of the front panel.
Open source: after power instrument self-test program, when the detection result is correct (instrument self-test program running time Five Seconds), enter the ready state measurement instrument.
Power off: when the power is turned off, lower voltage, current and power before the set alarm value will be retained, these values are unchanged after the next boot.
Note: cut off the power supply after waiting for Ten Seconds later again to turn on the power, otherwise the instrument may not display properly.
4.3 steps
4.3.1 measurement / Display voltage, current, active power and power factor
A) when the switch is closed, the instrument self-test, enter the measurement ready state.
B) rear terminal equipment according to the wiring diagram to safely connect to the device under test.
C) connection after the completion of the input power supply connected device under test, measurement instrument is started.
D Press) A/B/C/ Sigma bond, the display in the instrument A/B/C/ Switch between sigma.
4.3.2 measurement / Display frequency: in the test mode, press the function selection keys, which displays the current frequency, the release will return to the test condition.
4.4 and the limit of judgment function: the instrument to determine current and power limit is overrun automatic in the test, such as overload will automatically alarm.
4.4.1 sets the current limit value
By a)" A/B/C/ Sigma "button to select the corresponding phase interface to set.
B) in the corresponding phase interface, press the multifunction button appears the following setting interface multifunctional rotary button mobile "-" to choose to change the settings, press the multifunction button, "-" into "*" after the words, you can change the selected set value. (clockwise rotation of the multifunction key set value added One , counterclockwise rotation of the multifunction key set value reduction One Press the "start; / Reset "button, the clockwise rotation of the multifunction key set value added Ten , counterclockwise rotation of the multifunction key set value reduction Ten Hold down the "function; switch" key, and the clockwise rotation of the multifunction key set value added One hundred , counterclockwise rotation of the multifunction key set value reduction One hundred Hold " A/B/C/ Sigma "button, and the clockwise rotation of the multifunction key set value added One thousand , counterclockwise rotation of the multifunction key set value reduction One thousand ). The "-" to shift " S "Press the multifunction button to complete the set.
4.4.2 current and power limit determines the ultra limit: measuring the current or power is greater than the set threshold value, indicating lights over the upper limit of the buzzer. Ultra limit: measuring the current or power limit is less than the set value, indicating the corresponding lower limit super lights, buzzer.
4.4.3 set the test line of this instrument can be used to measure the three-phase three wire, three-phase four wire load and single phase. The wiring method needs the corresponding test different wire wiring. (connection method to chapter fifth) test three-phase three wire and three-phase four line you must select the appropriate line in conjunction settings. Press A/B/C/ Sigma bond, will switch to the total voltage display instrument \ Electric current \ power \ The power factor, press the multifunction knob to enter the set state, after setting the power limit press the multifunction knob can enter the set state of wire. About adjusting knob, Three Phi 3W On behalf of the three-phase three wire, Three Phi 4W On behalf of the three-phase four wire, the choice you need wire after press the multifunction knob, stored in the instrument current settings and enters the measuring state. When the test phase according to the wiring phase display switch to the corresponding phase (such as wiring in A Is to switch to display A Phase display).
PS93 type digital three-phase power meter wiring method
Note: the power meter into a three-phase three wire system, the UA The representative of reading AB Two voltage UAB , UC The representative of reading BC Two voltage UBC But, AB The readings for the Zero .
The three-phase four wire connection
Common failures and troubleshooting methods
The instrument used in the process, will inevitably occur some faults, for some common fault features in the use of instruments that might occur in the location, cause, check and troubleshooting. Instrument failure: turn on the power switch, the display window does not display the numerical
step One Check whether the power line voltage of power supply equipment needed.
Check method: multimeter dial to AC voltage range, rated power supply voltage by measuring the power line test whether required for instrument.
Solution: the instrument of change to the power line voltage circuit corresponding to the rated supply voltage of the instrument.
step Two Connect the power line socket safety check whether the power line and instrument.
Solution: the plug power line plug tight.
step Three Check the instrument power fuse is intact.
Check method: turn off the power switch, the power line from the power outlet of the instrument are drawn out, with a small screwdriver will lower power line socket fuse socket up, check the front-end whether the fuse fuse.
Solution: according to the above method, will pick out the fuse holder, fuse fuse, the fuse will fuse in the socket is inserted into the new seat back, the fuse will be inserted. (Note: the factory, the fuse holder has a spare fuse.)
If the above methods are invalid, please contact technical department with my company, we will have someone to solve your problem.
Fault: no data
Steps: check instrument for measuring cable is correctly and securely attached to the measurement instrument on the rear panel on the terminal.
Inspection methods: visual inspection and measuring with 000 cable is open.
Solution: turn off the power switch, cable repair, re correctly connected to the measuring terminal connection line. If this method is invalid, please contact technical department with my company, we will have someone to solve your problem.
PS93 type digital three-phase power meter complete sets of equipment
Host One platform
Power cord One root
Certificate One share
Instructions One book
No. Eight Other chapters
8.1 user products since the date of purchase Twelve Within a month, 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 can not work normally, the factory responsible for free to replace or repair.
8.2 manufacturing plants have the right to make changes to the product specification, without notice.
8.3 without our consent, the user shall not dismantle the instrument, once discovered, immediately cancel the warranty, as the case for repairs.
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 the person and property of the period Ten Year. The poisonous and harmful substances or elements of the name and content identification.
A body of XXX, XXX
Shell plating XXX X Eighty
LCD screen X Eighty X Eighty
Circuit board X XXX, eighty
Contactor X XXX, eighty
Transformer ( Pressure regulator X) XXX, eighty
switch X XXX, eighty
Ten: the concentration of the hazardous substance in all homogeneous materials in the parts are in SJ/T11363-2006 The standard limits for the following.
X said: this hazardous substance contained in at least one of the homogeneous materials. SJ/T11363-2006 Limit standard requirements.