Dc resistance around the group of measurement transformers is a very important test project. In the "test regulations of electric power equipment" its order ranks the second in the transformer test project. The "regulations" stipulates that pick up overhaul minor repair change sub-pick up head position fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group whose purpose is:
(1) check the welding of line and lead line around the group;
(2) check if the pick up touch is good;
(3) check whether there is a broken place around the group or leading line;
(4) check the correctness of the parallel branch whether there is a few parallel guide lines winding into the winding group or a few broken line situation;
(5) check whether there is a short circuit between layers and turns.
The interface design of Dc resistance rapid test instrument adopts microcomputer control big screen backlit Chinese liquid crystal screen show operation is simple show clear man-machine interaction interface friendly measurement process and instrument work state prompt is clear and sufficient no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology with stable test high measurement precision and fast speed improving measurement efficiency and reducing work intensity of operation personnel. Technically "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size light weight easy to carry.
Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer transformer winding group and other perceptual low resistance.
product names Dc resistance tachometer Transformer dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Dc resistance rapid test instrument
Transformer dc resistance test instrument is an indispensable test project of Transformer after handing in pick up overhaul and change sub-pick up switch. In general using traditional methods (bridge method and pressure drop method) measurement transformer winding group and dc resistance of large power inductance equipment is a time-consuming and time-consuming work. In order to change this situation shorten measurement time and reduce the work burden of test personnel huatian electric power company developed Transformer dc resistance test instrument (hereinafter referred to as direct resistance instrument). It adopts new power supply technology featuring stable performance rapid measurement small volume easy to use high measurement precision and good data repeatability. Measurement transformer around the group and large power inductor dc resistance ideal equipment. product namesï¼?Dc resistance tachometerã?? Transformer dc resistance test instrumentã?? Transformer winding dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument
FEATURES Most cost-effective Faster installation Safe and easy installations High accuracy 0.5 Holding wire diameter: 32mm Ratio ranging from 60/1A to 600/5A CE, UL PARAMETERS Technical parameters Standards IEC/EN60044-1 & IEC61010-1 & IEC61869-2&ANSI C57.13 Ratio 400: 5 or 200:5 , customized Nominal input current Primary current 100A/150A/200A/300A/400A/500A/600A Overload withstand 1.2 times rated current continuously Accuracy 0.2%, 0.5 %, 1%/60Hz System Voltage 720V(0.72kV) Output signal 1A or 5A 333mV AC or 100mV-2V optional Burden 2.5VA Frequency range 40 Hz-500 Hz Dielectric strength 3KV 50Hz/60Hz at 1 minute Output Standard 2.5 meter cable Max. jaw opening 32 mm Mechanical parameters Dimensions (DH) (mm) 110mm130mm 41mm Weight(g) 700 Operating conditions Operating temperature -25 C to +55 C Relative Humidity 0-85% non-condensing Altitude
Standards IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 Rated primary current 300-600A Rated load 10VA Rated frequency 50Hz or 60Hz Rated secondary current 5A or 1A Rated short-time thermal current 40kA, 1S Rated continuous thermal current 120%I1n Secondary winding power-frequency voltage 3kV, 1min Instrument security factor FS 10 Mechanical parameters Dimensions (WDH) (mm) 50x110x32 Weight (kg) 1 Operating conditions Operating temperature -35C to +55C Daily average temp
Technical parameters Standards IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 Rated primary current 20-600A Rated load 25VA Rated frequency 50Hz or 60Hz Rated secondary current 5A or 1A Rated short-time thermal current 40kA, 1S Rated continuous thermal current 120%I1n Secondary winding power-frequency voltage 3kV, 1min Instrument security factor FSâ?¤10 Mechanical parameters Dimensions (WDH) (mm) 50x110x105 Weight (kg) 3.1 Operating conditions Operating temperature -35C to +55C Daily average temp
240 volt 12 volt transformer LJB1 5A/10V 0.5 YOYIK, located in Deyang, Sichuan, is a comprehensive power station equipment and accessories company integrating R&D, manufacturing and sales. It is well-known in the industry for its exquisite craftsmanship and strict quality control. The company not only provides key components for thermal power and hydropower stations at home and abroad, but also involves in new energy fields such as wind energy and nuclear energy, showing strong innovation and adaptability. With customized services and global market layout, YOYIK has become a trusted partner of many large projects. Yoyik can offer many spare parts for power plants as below: #DF-240 volt 12 volt transformer LJB1 5A/10V 0.5-DF LVDT transmitter XCBSQ-02/600-02-00 LVDT Sensor B151.36.09G09 240v pressure switch RC771BZ090H Sensor DF310030-40-00-01-00 Input/output card IOC 4T 200-560-000-1Hh STOCK Load Cell EG2490 P/N AC19387-1 DEH OVERSPEED SENSOR SZCB-02-B117 Differential Pressure Switch RC861CZ090ZSSYM industrial proximity sensor CWY-DO-811402 Probe 81724-00-07-10-02 tachometer pickup SZC-04 Temperature probe WZPM2-201 LVDT Sensor mounting bracket Z25.4-5L Hydraulic oil station oil pipe S100-AC-FH-0120 Power supply PSMB-7-7-48V/72W-A TEAR PROTECTION SENSOR XD-TQ-1 Connection Cable 81305-080-00 Reflective Paper A29466-1 3500/53 Module CWY-DO-812501 Conductivity meter 2402BRK Eddy Current Sensor PR6422/101-030 Locator V18345-1010121001 Bolt electric heating rod ZJ-20-37 RTD (Pt-100) WZPK2-630 Explosion-proof Acoustic Light Alarm BBJ Intelligent flame detection signal processor IFD120 resistive linear position sensor 700TD 0-35mm Anemometer EM9110-YPCP LVDT transmitter XCBSQ-04/400-01-12 TIMER WITH BASE ST3PF Limit switch WLCA12-TH management relay 8PFA Vibration Speed Transducers for Turbine and Pumps VS-2X SENSOR LVDT FOR GV HTD-150-3 PRESSURE SWITCH BH-003001-003 Level Indicator UHZ-10 240 volt 12 volt transformer LJB1 5A/10V 0.5 240 volt 12 volt transformer LJB1 5A/10V 0.5 MY-DFYL-2024-7-17
IP65 explosion-proof and waterproof Zone 2 inverter is the most advanced DC to AC inverter, built in low frequency isolation transformer, IP65 industrial explosion proof rating enclosure, widely used in coal mines, wineries, chemical plants. Application: 1. Zone 1& 2 Hazardous locations, such as: underground coal mines, wineries, chemical plants, etc. 2. Environment with IIA, A A IIB, IIC types of explosive gas, such as: Flour mills, Aluminum powder plant, Metal mine factory, Graphite factory.etc. 3. Indoor (IP54) or outdoor(IP65) 4. Low noise/ Silent working mode 5. Explosion proof/ Spark-proof/ Waterproof/ Anti-dust/ Shock-proof. Features: 1. Durable: 4.0 thick steel plate seamless welding, surface spray, beautiful appearance. 2. Explosion proof rating: Explosion-proof standard is EXdIIBT4. 3. More reliable: Built-in low frequency isolation transformer, strong ability of anti-interference. 4. Widespread application: DC to AC, Single phase to Three phase, High voltage to Low voltage or Low voltage to High voltage. 5. Pure sine wave output, quick instant response speed 6. Excellent performance of taking load, it can take a variety of loads, such as: halide lamps, motors, welding machines, precision machine tools, fluorescent lamps, energy-saving lamps, etc. 7. Powerful protection functions: With over-current, over load, under voltage, over voltage, short circuit, over heating and other protection. 8. High protection class: With good performance of anti-dust, waterproof,shockproof. 9. 100% full power output: Can be 7* 24 hours continuously working 10. Accept customized: Can be customized according to customers' requirements. 11. Adopted the sixth generation IPM intelligent power module from Mitsubishi,high efficiency and stable performance, intelligentized, modular, simple structure design, very easy and low cost for future's maintenance. 12. Advanced functions: 1) Setting flexible: The DC input voltage range, output voltage, output frequency all can be set. 2) Two kinds of work mode: Can add AC bypass input(Optional), Battery priority, AC bypass as back up or AC bypass priority, battery as back up. 3) Two kinds of start mode: Variable frequency start and Step down voltage start. with stronger capacity to drive inductive load. 4) RS485 remote monitoring(Optional) 5) Big LCD color screen display, modular structure very easy for future's maintenance 6) High efficiency > 94% and low loss, design service life > 15 years.
The test transformer calls the booster it is the basic test equipment used by the power station supplying and distributing the electrical power system and the scientific research unit. Which used in the insulated intension test on all kinds of electrical products electrical equipments and insulated materials testing the insulated level of products discovering the insulated objection of quizzee scaling the capacity burdened voltage AC HV Testing Transformer Classification: There are four kinds of high voltage testing transformer according to the medium points: 1. Oil-immersed high voltage transformer test: large capacity, cheap, convenient maintenance, mainstream products. 2. Inflatable high voltage test transformer : interrupter resistance, and light weight. 3. Dry type high voltage testing transformer: light weight, light volume, can run backward, price expensive. 4. Series type high voltage testing transformer: small volume, low voltage, light weight, easy to transport and install.
product brief introduction Product Introduction The test transformer calls the booster it is the basic test equipment used by the power station supplying and distributing the electrical power system and the scientific research unit. Which used in the insulated intension test on all kinds of electrical products electrical equipments and insulated materials testing the insulated level of products discovering the insulated objection of quizzee scaling the capacity burdened voltage AC HV Testing Transformer Classification: There are four kinds of high voltage testing transformer according to the medium points: 1. Oil-immersed high voltage transformer test: large capacity, cheap, convenient maintenance, mainstream products. 2. Inflatable high voltage test transformer : interrupter resistance, and light weight. 3. Dry type high voltage testing transformer: light weight, light volume, can run backward, price expensive. 4. Series type high voltage testing transformer: small volume, low voltage, light weight, easy to transport and install.
SANDI SDP series Pure Sine Wave Inverter is the one of the most advanced technology DC to AC conversion products in the world, it's suitable use for areas without electricity, providing a complete power solution for strict demand applications. With SVPWM technology it has high conversion efficiency, high instantaneous power and low losses power output pure sine wave, applying to capacitive, inductive and nonlinear mixed-load, with superior load capacity, perfect protection function: overload, short circuit, low/over battery voltage, improper operation etc, which wonâ??t cause mechanical failures. This Inverter is very suitable for solar power systems, the inverter can supply AC power to all kinds of electric equipment, air conditioners, electric motors, refrigerators, fluorescent lights, televisions, electric fans and other industrial power supply. Technical Features: 1, The core components are all imported, adopting the sixth generation IPM module from Mitsubishi, which has stable performance, long service life, strong protection functions and convenient replacement and maintenance. 2, Adopt the central processor DSP28335 chip from American TI Company, respond quickly and accurately, and provide stable and clean power for the load to provide protection. 3, The whole machine adopts modular design and plug-in design, which is convenient for maintenance and reduces the hidden cost of machine failure to repair. 4, According to the product configuration conditions, adjustment the system usage mode: DC(Battery/Solar) priority or AC mains bypass priority can be set. 5, Two kinds of start mode: Reduction Voltage Start and Variable Frequency Start. Customers can set start mode according to the type of their load. This function is very convenient for users and also reduce frequency converterâ??s usage, which reduced the cost of equipment investment, easy to connect wires and control. 6, The output voltage can be set between -40 % to +20 % of rated voltage. And the output voltage is very accuracy + 1%. 7, The DC input voltage range can be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be setting via the LCD panel. 8, Output AC Power is suitable for all types of electrical equipment, CNC machines, electric tools, motors, pump and air conditioner etc. It has higher efficiency and higher capability of driving load. 9, Humanized safety design, using isolation transformer design, input and output are completely electrically isolated, input and output are equipped with circuit breakers, which saving costs for the user and easy to installation, the electric parts are completely closed to prevent electric shock.
