News Details

器, printer, current,

voltage transmitters, etc. The test control circuit consists of test control loops for various electrical components, mounting seats for various electrical components, voltage regulators,

transformers, shunts, voltmeters, ammeters, control switches, action indicator lights, etc. 2. Scope of Application: Mainly used for testing various electrical components such as contactors and relays in metro vehicles. Test items include: 1) On-off test of AC/DC intermediate relays.

2) On-off test of AC/DC contactors.

3) Action test of AC/DC circuit breakers.

4) Test and setting of AC/DC thermal relays.

5) Test of AC/DC overcurrent relays.

3. Main Technical Parameters

l  Test bench model: TH-III type

l Input power supply voltage: 3AC380/50HZ

l Input power supply capacity: 15kVA

l Voltage output range: AC 0～400V; DC 0～120V

l Current output range: AC 0～1000A; DC 0～1000A

l Time measurement range: 0.05S～999.9S (manual)

l Reference overall dimensions: 2000×712×1350 (length x width x height) mm

I. Technical Standards

1. "TB/T 2557-2006 "Testing requirements for components in railway passenger car electrical comprehensive cabinets"

and applicable new versions of standards, industry standards, and technical specifications of the China Railway Corporation (formerly). If there is a conflict between standards, the higher standard shall prevail or the standard agreed upon by both parties.

III. Technical Requirements

1. Power supply: single-phase 380V±10%, 50Hz

2. Ambient temperature: -10 ~ 45℃?

3. Ambient humidity: ≤90％

4. Test accuracy: 1％

5. Functions that this test bench can achieve: test the performance of DC circuit breakers and DC contactors; test the linearity of AC voltage sensors; test the linearity of DC voltage sensors; test the linearity of current transformers; test the linearity and protection output action of online insulation detection devices; DC power supply module: no-load and load tests; DC power supply module: charging module: no-load and load tests; comprehensive performance test of touch screen, PLC and expansion modules.

6. The operating software should have good interactivity, be equipped with a liquid crystal display, and the display should be embedded in the operation panel. It should have operator login management, and the operator login permissions can be increased or decreased as needed. The operating software should have parameter maintenance functions to facilitate users to add or remove test component models later.

7. The operating software should have the function of recording test results. Users can query test records based on test date and tester as query conditions; the test bench should be equipped with a printer, and test record reports can be exported and printed.

8. Provide all kinds of special test wiring.

9. The operating software should be eye-catching and easy for manual input. Common models can be directly selected, special models can be manually input and have memory function, and the test interfaces for various software should be separated.

10. The test interfaces for different types of test components on this test bench are independent and should not be confused with interfaces of other types of components. Test records should be printed independently, and all component test records should not be on one record sheet.

11. The test bench should have a status indication function. When testing different types of components, it should correctly indicate the working status of the test bench;

12. The operating software should be eye-catching and easy for manual input. Common models can be directly selected, special models can be manually input and have memory function, and the test interfaces for various software should be separated.

IV. Quality Requirements

1. The equipment should be able to detect the status of electrical components.

2. Warranty period: Our company's warranty period: 1 year from the date of acceptance and use. During the warranty period, if there are product quality problems, our company will be responsible for free repair or replacement of non-conforming products, and bear all economic losses caused thereby.

5. During the quality guarantee period, if the equipment fails and requires on-site handling, the winning bidder must arrive at the site within 48 hours after the repair request.

V. Other Requirements

1. This test bench is a brand new complete set, conforming to national, industry, and China Railway Corporation (formerly) relevant quality standards, meeting the requirements of the tender documents and the performance requirements of the project.

2. This test bench meets the specifications, technical standards, technical requirements, and configurations listed in the tender documents.

3. This equipment includes necessary wearing parts, backup test software, written materials, electronic technical materials, factory certificate of conformity, instruction manual, packing list, warranty card, and complete packaging box (the certificate of conformity should include the manufacturer's name, product name, specification drawing number, standard code, batch number, inspector, etc.). Packaging shall be in accordance with national and manufacturer standards, with proper protection, and packaging materials do not need to be returned. If damage or other quality problems affecting use are caused by improper packaging or transportation by the manufacturer, unconditional return or exchange shall be made.

4. The acceptance standard for this test bench shall be implemented according to the technical standards and requirements listed in the tender documents, and the current national, industry, and (former) relevant standards and requirements.

5. Our company is responsible for design, manufacturing, transportation (to the location, including loading, unloading, and moving into position), installation and commissioning (including foundation modification and line laying), acceptance and handover, provision of wearing parts, personnel training, application software and database upgrade and expansion, after-sales service, etc., as a turnkey project. The quotation includes the above content, tax included, and issues a special VAT invoice.

Technical Solution for Metro Electrical Component Comprehensive Test Bench

One of the three-phase voltage paths is converted from three-phase AC380V power supply to 0-430V adjustable voltage through a voltage regulator, which is sent to a current booster to become an AC0-100A adjustable current source to provide test power for the tested object; the other three-phase voltage path is converted by a transformer from AC380V to 550V, then rectified to 750V DC voltage to supply test power for the tested DC sensors, leakage current sensors, TH-III DC600V online insulation detection device, DC switches, and direct contactors; additionally, a DC0-150V DC voltage is provided for DC sensors with a test voltage range of (0-150V) as test power; the instrument collects the current and voltage signals of the tested object and compares them with the standard sensors of the test bench. The values of the two sensors are compared and calculated to obtain the linearity: the DC current signal from the DC source is taken through the leakage current sensor to test the action of the TH--III DC600V online insulation detection device.

6 Test System Composition

6.1 Overview

The test system can control and manage the test bench equipment. The operator can operate, control, monitor the equipment on the display and proceed with