Products

  • Power Electronics Computer Kit Electrical Training Equipment Teaching Equipment

    SR6120E Power Electronics Computer Kit Electrical Training Equipment Teaching Equipment
    1 Introduction
    This experimental device, has manual and automatic control (software) control in two ways, can provide excitation voltage and DC motor armature voltage, and the armature voltage in the DC adjustment between 0-220 – v, implementation of DC motor speed control. Through the experiment, and master the principle and control mode, the corresponding knowledge and skills, suits, higher vocational colleges, secondary vocational schools and vocational school related professional teaching and skills training examination.
    2 Training panel instructions
    1. Armature voltage display.
    2. Automatic/manual switch knob.
    3. Enable switch
    4. Potentiometer — armature voltage adjustment.
    5. Armature voltage output terminal –DC 0-220v /5A.
    6. Excitation voltage output terminal –DC 220V/1A.
    Communication port.
    8. Dual control switch — power switch.
    9. Power socket –AC220V power supply.
    10.Fuse
    11. Rotary encoder terminal.
    12. The communication line
    13. Rotary encoder.
    14. Excitation winding terminals.
    15. Armature winding terminals.

  • Overload Relays Trainer Four Pole Educational Equipment For College

    SR6118E Overload Relays Four Pole Educational Equipment For College
    1 Introduction
    Thermal overload relay is the principle of applied electric current heat effect, which is used as the overload relay of the sensitive element, and also known as thermal relay. The so-called electrical thermal sensitive bimetallic strip is made of two kinds of alloy heated by the difference between the two linear expansion coefficients. When heated, bimetallic plates are bent from the high expansion layer (active layer) to the lower expansion layer (passive layer). When the current is too large (exceeding the set value), the element is moved by the “heat”, and the power of the controlled circuit and the protected equipment is cut off by the connected dynamic break contact.
    Thermal overload relay is used for motor overload protection with various types. The thermal overload relay is easy to install and easy to use. It has a complete function and low cost. It has been proved by practice that it can reliably protect the motor, so it has always been an important position.
    2.Technical data
    Overload relay (4 – pole 53A & 85A)
    Maximum voltage: 600V AC,240VDC.

  • DC Compound Machine Trainer Electrical Machine Trainer Educational Equipment

    SR6110E DC Compound Machine Trainer Electrical Machine Trainer Educational Equipment
    1 Introduction
    DC shunt motor is a DC motor equipped with shunt winding and series winding in the main magnetic pole.
    Compound machine excitation winding is divided into two parts, part of the series with the armature winding, the other part with the armature winding in parallel, according to the direction of the magnetic field can be divided into two parts winding generation compound machine and compound machine. Compound DC motor is widely used in ships, trolley buses and lifting mining equipment.
    2 Technical data
    Rated voltage of compound dc motor :42V.
    DC excitation voltage :DC36V;
    Rated speed :3000 RPM.

  • Insulation Meter Educational Equipment Vocational Training Equipment

    SR6115E Insulation Meter Educational Equipment Vocational Training Equipment
    1 Introduction
    Insulation resistance meter, also known as megameter, table, and Meg, the insulation resistance meter is mainly composed of three parts; The first is the dc high voltage generator to produce the dc high voltage; The second is to measure the special instrument used to measure the maximum resistance, insulation resistance, absorption ratio and polarization index. Its scale unit is megohm, which has a high voltage power supply. Loop; The third is display. A special instrument used to measure the maximum resistance, insulation resistance, absorption ratio and polarization index. Its scale unit is megohm, which has a high voltage power supply.
    2 Structure and composition
    (1)DC high voltage generator.
    The measuring insulation resistance must be applied at the measuring end of a high voltage. The high voltage value is specified in the national standard of insulation resistance as 50V, 100V, 250V, 500V, 1000V, 2500V, 5000V…
    There are generally three methods for generating dc high voltage. The first type of hand generator. At present, about 80% of the megol meter produced in China is used in this way (table name source). The second one is through the pressure of the municipal transformer, the rectifier gets the dc high voltage. The method used in general electric megohm meter. The third is the use of transistor oscillating or special pulse width modulation circuit to produce dc high voltage, general battery type and municipal electrical insulation resistance meter.
    (2)Measuring circuit
    In the table above, the measurement loop and the display part are one. Than it is to have a flow meter, to complete the meter in the header, there are two Angle 60 ° of coil (or so), is one of the coil and the voltage at both ends and the other coil is string in the measurement circuit. Header pointer deflection Angle is determined by the current ratio of the two coils, different represent different resistance, deflection Angle measuring resistance, the smaller the greater the string in the coil current measurement circuit, then the pointer deflection Angle is bigger. Another method is to use a linear ammeter as a measurement and display. Use than flow meter in front of the header because the coil in the magnetic field is uniform, when the pointer in the infinity, current coil is just where the strongest magnetic flux density, so despite the resistance being very high, being measured current flows through the coil current is small, the coil deflection Angle is bigger. When the measured resistance is small or 0, the current in the current coil is larger, and the coil is deflected to a place where the flux density is small, and the deflection Angle caused by this is not very large. So we have a nonlinear correction. Generally, the resistance of the meter header is several orders of magnitude. But when using linear current meter head string directly into the measuring circuit is washed-up, when high value scale of all crowded together, unable to distinguish, in order to also to achieve the nonlinear correction must be in the measurement circuit using nonlinear components. Thus, the shunt function is achieved when the small resistance value is obtained. There is no shunt in high resistance, which results in several orders of magnitude. With the development of electronic technology and computer technology, digital display table is gradually replacing pointer instrument.
    The digital measurement technology of insulation resistance has also been developed, among which the voltage ratio meter circuit is one of the better measuring circuit, and the voltmeter circuit is composed of the voltage bridge circuit and the measuring bridge circuit. The signals output by these two Bridges are converted by A/D conversion and directly converted into digital values by single chip processing.
    choose
    The insulation resistance meter is used to measure the voltage value, and the other is the range that needs to be measured to meet the needs. If measurement is very frequent, it is best to choose alarm setting function.

  • DC Speed Control Module Electrical Machine Trainer Vocational Training Equipment

    SR6113E DC Speed Control Module Electrical Machine Trainer Vocational Training Equipment
    1 Introduction
    This experimental device can provide excitation voltage and armature voltage for DC motor, and the armature voltage can be adjusted between DC 0 and 220V to realize speed control of DC motor. Through the experiment, and master the principle and control mode, the corresponding knowledge and skills, suits, higher vocational colleges, secondary vocational schools and vocational school related professional teaching and skills training examination.
    2 Training Panel Instructions
    1. Enable switch
    2. Adjustment of soft start time.
    3. Excitation voltage output terminal –DC 220V/0.5A.
    4. Dual control switch — power switch.
    5. Current limit adjustment.
    6. Potentiometer — armature voltage adjustment.
    7. Armature voltage output terminal –DC 0-220v /4A.
    8.Fuse
    9. Power socket –AC220V power supply.
    3 Operation instruction
    1. Carefully check whether there is any safety hazard in the power supply line before power supply. (for example, the copper wire of the insulating layer breaks out and is not allowed to be used)
    2. Insert the power cord plug into the AC22V power input socket and power the panel.
    3. The test cases on the excitation voltage output terminals using K4 test line is connected to the dc motor excitation winding terminals, the armature voltage output terminals on the test chamber used K4 test line connected to the dc motor armature winding wiring terminals. (dc motor shunt connection mode is adopted here)
    4. It will enable the single control button and power double control button to hit OFF state, and the potentiometer will rotate counterclockwise to the minimum. After checking, turn on the power double control button, and the whole device circuit is connected. Turn on the switch and adjust the potentiometer to adjust the speed of the dc motor.

  • Overload Relays Three Pole Teaching Equipment Vocational Educational Equipment

    SR6117E Overload Relays Three Pole Teaching Equipment Vocational Educational Equipment For College
    1.Working principle and usage
    The thermal element of the thermal overload relay is directly or through the current transformer connected to the motor circuit. When the motor is overloaded, the main bimetallic strip is heated to the action temperature, which makes the relay move, and the power circuit of the power failure motor is divided, so that the motor is not damaged by overload. Thermal overload relay action time and the relation of the size of the overload current according to the inverse time, therefore, its thermal characteristic is easy to cooperate with the thermal characteristics of the motor, but also has simple structure, low price, stable performance, convenient use, etc. Therefore, in the 1990s, most squirrel cage rotor motors and partial winding rotor motors still used thermal overload relay as protection of overload, break phase and current imbalance operation. Thermal overload relay can also be used for other electrical equipment to control the heating status of electrical appliances.
    2.Technical data
    Overload relay (3 – pole 28A & 45A)
    Maximum voltage: 600V AC,240VDC.
    3.Application range
    Thermal overload relay of the scope of application: thermal overload relay for ac 50 hz, rated insulation voltage 660 v, current 0.1 ~ 630 a circuit, it is mainly used for three-phase ac motor overload and phase failure protection. It can also form a starter with an adaptive ac contactor, such as an overview of the diagram thermal relay configuration.
    4.Structure and feature
    There is a current regulating CAM to adjust the setting current.
    There is a temperature compensation device to ensure that the action characteristics are basically unchanged within the ambient temperature range of -20℃ ~ 60℃.
    There are reset adjusting knob to adjust the reset mode, manual and automatic two reset state.
    There is a stretch spring to make sure the contact action is fast and reliable.
    There is a differential phase/three phase unbalance protection device.
    The slider/switch position indicator is used to simulate the trip of the thermal relay and display the action status. Through this simulation check and ensure that the auxiliary circuit wiring is correct. When the marking line on the slider is located at the “0” sign, the trip is displayed at the “l” mark.
    There is a disconnect button, press the disconnecting button, the normally closed contact opens the serial contactor open circuit, disconnects the load, releases the disconnecting button, and the load is reworked through the contact device.

  • DC Shunt Wound Machine Trainer Electrical Training Equipment Teaching Model

    SR6111E DC Shunt Wound Machine Trainer Electrical Training Equipment Teaching Model
    1 Introduction
    DC compound motor is a DC motor equipped with shunt winding and series winding in the main magnetic pole.
    Compound machine excitation winding is divided into two parts, part of the series with the armature winding, the other part with the armature winding in parallel, according to the direction of the magnetic field can be divided into two parts winding generation compound machine and compound machine. Compound DC motor is widely used in ships, trolley buses and lifting mining equipment.
    2 Technical data
    Rated voltage of compound dc motor :42V.
    DC excitation voltage :DC36V;
    Rated speed :3000 RPM.

  • DC Motor Compound Excitation Trainer DC Machine Trainer Educational Equipment

    SR6109E DC Motor Compound Excitation Trainer DC Machine Trainer Educational Equipment
    1 Introduction
    This experimental device can provide DC and AC power supply, and output the protection of fuses, which can provide DC 5V/1.2A, AC 6V/ 1.5A voltage. Configure the moving coil dc 1A and ac 1A pointer table to complete a variety of measurements. Through the experiment, and master the principle and control mode, the corresponding knowledge and skills, suits, higher vocational colleges, secondary vocational schools and vocational school related professional teaching and skills training examination.

  • Three Phases Synchronous Machine Cutaway Models AC Machine Trainer Teaching Model

    SR6108E Three Phases Synchronous Machine Cutaway Models AC Machine Trainer Teaching Model
    1 Introduction
    Synchronous motor is an AC motor with the same rotating speed as the stator rotating field. The rotation speed of the rotor is n=60f/p with the logarithmic p and the power frequency f. The speed n depends on the power frequency f, so the power supply frequency must be constant, the speed is constant, and it has nothing to do with the load. It has the characteristics of high operation stability and overload capacity. It is often used in multi-machine synchronous transmission system, precision speed control system and large equipment.
    2 Synchronous machine structure
    The structure of synchronous motor is varied, and the rotor structure has hidden pole type and salient pole type. The installation methods include horizontal, suspension, semi-suspension and vertical. The synchronous motor is usually composed of stator, rotor, bearing, baseplate, end cover, collector ring and brush frame, and the motor with the protection grade of IP44 is also included in the cooler. A brief description of the above components is given below:
    1. Stator
    The stator is composed of a stand, a stator coil and an end collar and supporting part of the stator coil.
    1.1 stand
    The frame has round stand and square frame (box structure), all welded by steel plate. The motor of the round machine seat of the large horizontal installation, the center of the machine can sink, and the lower part of the seat sometimes sinks to the pit below the installation plane, so the center of the motor is not limited by the outer circle size. Square base are commonly used in protective higher grade of motor, more than the air – air cooling or air – cooled, cooler on the top of the frame, general motors by the center core diameter high limit, lower frame is generally not below the installation plane.
    1.2 stator core.
    The stator core is composed of a frame and a silicon steel plate in the frame. The core is divided into internal pressure and external pressure mounting: the inner pressure is positioned inside the machine seat, and then the silicon steel sheet is pressed into the seat, and then the tension screw and the pressure ring are pressed and fixed on the machine seat. The outer pressure installation is to make the core frame first, the silicon steel sheet is pressed into the frame, and the embedded wire is then put into the frame by the vacuum pressure immersion treatment.
    1.3 stator coil
    The stator coil is made of an electromagnetic wire with the corresponding insulation and voltage grade, and the coil can be inserted into the stator core trough through the turns and the coils of the ground resistance test. The linear part of the coil is pressed tightly with the slot wedge. The end part is tightly bound together with the polyester sleeve coil, the end hoop and the supporting part. After the coating is processed, the whole stator becomes a solid whole. The stator coils can be insulated with class B and F, and the special case is H – class insulation. F is used for the above 10KV. Stator coil is the key part of the motor. It is easy to burn the motor due to damage of dirt, moisture and insulation.
    The stator lead wire usually has 6 outlet heads and is marked with U1, V1, W1 and U2, V2 and W2. If it is connected with “Y”, then U2, V2 and W2 will be joined together. If it is connected with “delta”, namely, U2-V1, V2-W1, W2-U1, three wiring heads, the high voltage motor is usually connected with Y.
    2 Rotor
    The rotor of the synchronous motor can be divided into two types: the hidden pole type and the convex one, which are generally made up of magnetic poles, magnetic yoke, rotating shaft and collector ring. 2.1 the magnetic poles are divided into implicit and salient poles. Non-salient pole type magnetic pole is the circumference of a circle is not evenly in rotor slot, made concentric rotor winding coil, embedded in the groove, using metal slot wedge, fixed coil two ends with ring guard banding, the structure of high mechanical strength, good coil heat dissipation, multi-purpose in 1500 turn above the motor. Most of the motors under 1500 RPM are of a convex type magnetic pole.
    2.2 the salient pole is composed of magnetic pole, pole coil and pole screw, and the excitation lead is marked as F1 and F2.
    2.2.1 pole core is the use of end plate, rod, rivet pole to pole plate riveting pressure into the whole, the pole shoe mount damper bar (starting winding), welding on damping rings on both ends, and notches in playing the punching core at both ends and the damper bar clamping to prevent axial moving, can also be used on the damping of the stretched out on both ends of the core set of brass to fixed
    2.2.3 yoke and axis.
    Most of the magnetic yoke is made of cast steel, which is also welded with steel plates. The diameter is small, and the magnetic yoke is directly connected with the shaft. The rotating shaft material is generally made of 45 steel and 35 steel, and the special case is made of alloy steel.
    2.2.4 rotor assembly:
    Yoke thermal set on the rotating shaft first, in the pole core pole wrapping package good insulation, good insulation gasket, set into the pole coil, mount pole bolt, can be installed on the yoke. Note when assembling, insulation gasket can’t more mat, also cannot little cushion, cushion the impact more air gap, less cushion may not tightly on the pole coil. In the case of pole to tighten bolts, general control pole core and the clearance between the yoke within 0.15 mm, at the same time to pay attention to the distance between the poles boots to uniform, the axial location to the end of the pole core level. Spoon fan. Overall varnished, in order to improve the mechanical strength, moisture and heat dissipation performance.
    The rotor is the heart of the machine, is made up of many parts assembled, under the effect of electromagnetic force and centrifugal force at high speed, all the parts and fasteners loose easily, cause mechanical accident, therefore, all fastener must be tight when the assembly, and a locking measures, please assemble and maintenance workers should pay attention to check, found that the problem should be handled in a timely manner.

  • Assembly Kit For Transformers Construction Transformer Training Equipment Educational Equipment

    SR6105E Assembly Kit For Transformers Construction Transformer Training Equipment Educational Equipment
    1.Introduction
    The transformer assembly kit is for vocational school, technical institution, college, university students doing assembly and disassembly transformer hand on training. It’s for students to see the inside structure of the transformer, be familar with the function for single phase and three phases transformer in different work power.
    1.Technical data
    It complete with
    Single-phase 200V A transformer
    Single-phase 600V A transformer
    Single-phase 1000V A transformer
    three- phase 300V A transformer
    three- phase 600V A transformer
    and three- phase 1000V A transformer
    English operation/instruction manual

  • AC/DC Power SSR And Relay Driver Board Electrical Training Equipment

    SR6103E AC/DC Power SSR And Relay Driver Board Electrical Training Equipment Educational Equipment
    1. Introduction
    This experimental device includes two relays: solid-state relays and coil relays, and both have optical decoupling isolation. Through the experiment, and master the principle and control mode, the corresponding knowledge and skills, suits, higher vocational colleges, secondary vocational schools and vocational school related professional teaching and skills training examination.
    2.Technical data
    providing 8 channels of photo-couple isolated solid state relay modules, plus and additional 8 external relay driver outputs.
    3. Operate instructions
    1. Carefully check whether there is any safety hazard in the power supply line before power supply. (for example, the copper wire of the insulating layer breaks out and is not allowed to be used)
    2. Plug the power cord plug into the laboratory socket to power the device.
    3. Use the 2mm safety electrical cable to connect GND with IN, and the relay contact can be moved.

  • ZF-RF3030A RF Training Kit 3.0GHz Technical Educational Teaching Equipment

    ZF-RF3030A RF Training Kit 3.0GHz Technical Educational Teaching Equipment. Jinan Should Shine Didactic Equipment Co., Ltd. is company specialized in manufacture and trading Fluid Lab Equipment,air conditioner trainer, refrigeration trainer, Thermal Lab Equipment, Vocational Training Equipment,Didactic Equipment,Engineering Educational Equipment,Technical Teaching Equipment,for university,college,technical institution, polytechnics.Should Shine products has been exported to America,Asia,Europe,Africa, Australia.