Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of primary current injection tester in China. If you're going to wholesale durable primary current injection tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
NRG1000 Primary Current Injection Tester, referred to as "(riser), test equipment developed by our company, it combines the advantages of similar products at home and abroad in one, USES the numerical control technology, strong anti-jamming capability, compared with the generation of heat flow device with low power consumption, large capacity of the lotus root voltage regulator and high permeability core current transformer, has big output power, small volume, light weight, etc. Primary Current Injection Tester is mainly used for the test project of primary bus protection and the conversion ratio of various current transformers. It is widely used in the scientific research, production and electrical test field of electric power, railway, petrochemical, metallurgy and mining enterprises.
Performance characteristics
Adopt beautiful and generous PVC panel
Display the test value of primary current and secondary current directly, easy to observe and record the test.
Second measurement of current transformer, change ratio, polarity display at the same time
The measurement accuracy is 0.5
High power, small volume, strong load capacity
Small in size, light in weight, only 30% to 70% of the volume of similar products, very convenient to carry.
Technical features
Name and classification
(1) name:NRG1000 Primary Current Injection Tester.
(2) environmental groups: GB6287.1-86 in "electronic measuring instrument test master plan" Ⅲ set of instruments (outside ring
Environmental use.
(3) input voltage: AC220V plus or minus 10%
(4) work rate: 5KVA
(5) AC 0 ~ 1000A stepless adjustable panel tape digital display ammeter
(6) output voltage: 5V
(7) output waveform: the output current is a standard sine wave with tiny burrs, which is better than the standard index standard of power system and has small ripple coefficient
At 0.3%. Standard sine waves.
(8) measurement accuracy :(using 0.2s material) is actually about 0.3; Each current can be smooth, smooth and continuously adjustable with high precision
The current voltmeter shows true effective values with high precision and stability.
(9) output current mode: true effective value is continuously adjustable;
(10) current stability: 0.2%
(11) structure: integrated
(12) connection mode: as required
(13) protection Settings: overcurrent, overvoltage;
Operation
(1) after the wiring is completed, it should be checked once to see if there is any wiring error and if the connectors are in good contact.
(2) in the process of testing, if there is any fire, or there is no indication when starting up, the power supply should be closed immediately and the wiring should be re-checked.
(3) during actual wiring, the current output terminal should form a loop, otherwise the instrument will not output current.
(4) the converter has random output leads; The output external copper conductor is selected according to 10A/mm2.
(5) the capacity of the equipment is designed by working for one hour.
Working principle
Schematic diagram (omitted)
Working principle
1.The instrument measurement circuit includes one way current measurement loop and one way current measurement loop. (can add voltage test as required) can extend the volt-ampere characteristic function.
2.The current measurement loop includes microcurrent zero impedance CT, programmed amplifier and sampling circuits.
3.The voltage measurement loop includes PT isolation signal acquisition circuit, programmed control amplifier circuit and sampling circuit.
4.by 16 bit single chip microcomputer using computer digital real-time acquisition method, by measuring the voltage signal amplitude, according to the voltage proportional relationship, high pressure can be calculated measured voltage value, by measuring the voltage signal amplitude and setting value compared to realize the function of automatic timing, according to the current proportion relations, can calculate the current output size, by measuring the current/voltage signal amplitude comparing with set point to realize the function of over-current protection.
Panel description
1. Power indicator light
2.3. Power input
4. Current adjustment knob
5. Power switch
6. Primary and secondary current display
7. Lock button
8. Stop button
9. Start button
10. Current output terminal L2
11. Polar indicator light
12. Current output terminal L1
13. Secondary current input (< 5A)
Instruction
Before the power cord is turned on, first turn the "current adjustment" handle counterclockwise to zero. The current output terminal "L1 and L2" is connected to the primary side of the measured current transformer and connected to "K1 and K2" at the secondary side of the measured current transformer.
After power on, close the power switch, press the "start" button, clockwise (" current "handle, bring up the required output current, can characteristic test was carried out on the equipment under test (" current" shows the input to the transformer primary side current value, the secondary current display at this time of transformer secondary output current value, can be calculated according to the primary and secondary current value of the transformer under test than) press the "stop" button after the experiment, disconnect the power switch.
When making the impact test, the required current shall be first turned on, and the "stop" button shall be pressed to make the equipment power off, and the power shall be switched on by release.
The impact test can be conducted on the equipment under test.
Safety precautions
Ensure the instrument is well grounded for the safety of operators and instruments.
The ground wire shall be first connected when the test is ready, and the ground wire shall be finally removed when the work is finished.
The power supply connected to the instrument is required to withstand 30A current shock.
When connecting the instrument with the test product, please check whether the wiring is wrong, so as to avoid damage to the equipment caused by wrong wiring.
Set the maximum current value of overcurrent protection to not exceed the rated output current value of the instrument.
In the case of power supply, do not plug or unplug any wiring.
Transportation and maintenance
Transport
This product must be packed when transporting. Wooden cases should be used in the packing cases. The packing cases should be filled with foam and other shockproof layers. The packaged products should be able to be transported by road, railway and air. During transportation, it shall not be placed in the open vehicle box, and the warehouse shall pay attention to preventing rain, dust and mechanical damage.
Storage
Equipment should be stored at ambient temperature - 40 ℃ ~ 60 ℃, relative humidity less than 82%, ventilation, indoor without corrosive gas. Should not be placed close to the floor and walls.
Moistureproof
In humid area or wet season, if the instrument is not used for a long time, it is required to turn on the power once a month (about two hours) to make moisture release and protect the electronic components.
Prevent insolate
When the instrument is used outdoors, direct sun exposure to the display screen should be avoided or reduced as much as possible.
Accessories
1. One set of power cord
2. One copy of operation manual
3. One copy of qualification certificate
4. One warranty card
Quality assurance and after-sale service
1. The instrument is manufactured in strict accordance with national standards and enterprise standards. ISO9000 standard is strictly implemented in the production process to ensure the quality of the instrument.
2. This instrument has a shelf life of 1 years. During this period, if the quality is lower than the characteristic requirement due to manufacturing reasons, the company will provide free maintenance.
3. This instrument is three-pack.
4. During the service life of the instrument, the company will provide equipment maintenance, use training, parts supply and other related services for a long time.
5. If any problem is found in use, please contact our company in time. We will take different methods according to the situation: on-site maintenance guidance, or back to the factory for maintenance.
Attached figure: system wiring
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