I. Overview

Conducting performance tests on the stator (rotor) before the generator leaves the factory and displaying the test data can timely detect and solve early problems of the generator, thereby improving the installation qualification rate.

This performance test bench can meet the testing needs of different power single and three-phase generator sets.

2、 Standard basis

JB/T 10304-2001 Technical Conditions for Power Frequency Gasoline Generator Sets (including Test Methods)

JB/T 10304-2001 Technical Conditions for Small Single phase Synchronous Generators (including Test Methods)

3、 Test method:

First, connect the main power supply, and the frequency converter and frequency converter motor will start to serve as the power drive system. That is, the frequency converter and frequency converter motor will drive the generator to rotate as the driving power source. At this time, the generator is in a generating state, and the load box (which adopts a resistance load air cooling form) is used to load and test the generator. (All monitoring instruments must have corresponding identification for monitoring and testing items above them)

4、 Test items and accuracy

● Generator stator testing:

1. Total test voltage: AC 0-500V, current: 0-5.00-50A, power, accuracy level 0.5, true RMS; Voltage harmonic test: 50 times

2. Main winding test voltage I: AC 0-500V, current: 0-5.00-50A, accuracy level 0.5, true effective value;

Main winding test voltage II: AC 0-500V, current: 0-5.00-50A, accuracy level 0.5, true effective value;

3. Secondary phase winding voltage: AC 0-300V Test current: 0-5.00-10A, accuracy level 0.5, true effective value;

4. DC winding voltage: DC 0-100V Test current: 0-5.00-50A, accuracy level 0.5, true effective value;

5. Excitation winding voltage: DC 0-300V Test current: 0-5.00A, accuracy level 0.5, true effective value;

6. Sampling winding voltage: AC 0-100V, accuracy level 0.5, true effective value;

7. Test speed: 0-5000rpm, maximum speed 5000rpm;

8. Test frequency: 0-120Hz, accuracy ± 0.05 Hz;

9. Test factor: 0-1.0

10. Resistance load box: AC120V/240V/380V

● Drive testing section

(1) One set of variable frequency motor and driver
(2) Torque does not measure overload capacity: It can still ensure normal use even when the overload is not greater than 120% of the rated torque

5、 Computer display and electrical parameter measuring instrument on the console

1. Cold state testing of motor's arbitrary load performance: When the motor is in cold state, a fixed frequency is given, and the corresponding load is added (general test points: 25%, 50%, 75%, 100%, 110% points). The load is manually controlled in segmented power form, and the corresponding parameters are tested by dividing the load into 0.1KVA. It can reflect the efficiency of the generator's load-bearing capacity.

2. The installation of the generator adopts pneumatic clamping control (including the expansion and contraction of the electric brush using pneumatic methods) to ensure quick installation during mass production, and all wiring is manually completed.

3. For the convenience of users' testing needs, the load circuit and control design are divided into multiple stages, with manual direct loading.

4. The testing process involves multiple testing points according to requirements, and the manual button is pressed during testing. At the same time, the program has function selection keys that users can set according to their actual situation.

5. Real time testing data report: The output data report should meet the format requirements. The raw data obtained from each experiment measurement should be stored separately in data format files and can be copied out for other program processing, providing the data storage format. The data should be traceable and previous test reports can be printed and issued.

6. Equipped with barcode scanning function, the information collected by the scanning gun can be shared with the generator testing computer and JEA company's ERP system.

6、 Introduction to FZ-310-ATE AC Load Cabinet

This machine mainly adopts novel power consuming components, with high power density, no red heat phenomenon, and automatic overheating protection function. The whole machine is composed of fully resistive loads, and the power input is segmented to meet the needs of different powers.

1. Main functions

According to the performance parameter testing requirements, the corresponding power setting switch can be turned (jog type), and can be combined and loaded at will. The whole machine adopts electronic circuit control, with automatic temperature overheat blocking protection function. The load of this machine adopts new power components, with high reliability (the power change rate of the cold to hot power components is ensured to be ≤ 5 ‰/1h), and the power input adopts a disconnecting mode

2. Specification parameters

Rated load voltage: single-phase voltage 120V/240V/380V, frequency 50HZ, active power single and three-phase 10KVA

3. Working mode: load segmentation control

Single phase resistive power: 100VA, 200VA, 200VA, 500VA, 500VA, 1000VA, 2000VA, 3000VA. 3000VA can meet any combination within 0-10KVA. Charging winding load: 0-500W, 30A

4. Control mode: Control panel toggle switch mode, start, reset

5. Cooling method: fan cooling

6. Applicable ambient temperature range: -10-40 ℃

7. Display mode: digital table display; Single phase voltage, current, power

8. Load separation can be centrally placed, and the control part is located on the test bench