Dielectric strength (withstand voltage) tester

——Equipment function:

Dielectric strength (withstand voltage) testerUsed for testing the breakdown strength and withstand time of solid insulation materials under AC or DC voltage.

——Structure Overview:

Dielectric strength (withstand voltage) testerIncluding high-voltage transformer, regulator and control system, with thickened oil tank inside,The electrode with a diameter of 25mm/75mm can be connected to a computer for computer control, and various data during the experimental process can be collected and processed.

Equipment size:long1600 * width 1100 * height 1500MM.

Operation interface:Chinese and English operating interface.

Equipment power:10KW。

Working height:940mm±30mm。

Workbench size:1600*1100MM。

——Equipment drawings:

provideCAD drawings (including maintenance space), electrical diagrams; Provide software backup CDs, and if communication is involved, provide detailed communication protocols and parameter setting tables. At least two copies of the paper electrical diagram (final version) shall be provided.Provide drawings and electrical diagrams.

——Detailed functions:

1. Voltage testing range: AC/DC 0-100KV;

2. Overcurrent protection: 1-100mA;

3. Boosting rate: 0.05KV/S-10KV/S, adjustable without gear division;

4. Test methods: AC/DC test: 1. Constant voltage boost 2. Step by step boost 3. Voltage withstand test;

5. Measurement error of AC/DC voltage: ≤ 1%;

6. Output voltage fluctuation coefficient: ≤ 2%;

7. Sampling output configuration capacitor: 100pF/100kV;

8. Voltage endurance time: 0-48h (can be adjusted freely in the absence of current);

9. Temperature range in oil: room temperature -300 ℃;

——Electrical:

1. There must be an embedded emergency stop switch with anti misoperation design to avoid equipment failure caused by personnel accidental contact; The switch should be located in a position that is easy for personnel to operate and labeled accordingly. All safety related emergency stops, limit switches, thresholds, etc. on the machine must use normally closed points, and emergency stop buttons must be equipped with protective covers.

2. The leakage switch should be installed at the electrical control cabinet of the equipment body to prevent accidental contact by personnel.

3. The leakage switch has a sensitive response, and it will close when the leakage current is ≥ 30mA, with a response time of ≤ 0.1s.

4. Electrical wiring should be connected using safety terminals, labeled with wire numbers, and prohibited from being exposed. The wiring should be neat and easy to maintain.

5. The equipment body should be grounded, and equipment components with anti-static requirements should also pay attention to anti-static.

6. If the device has a human-machine interface, a protective cover should be installed to avoid damage to the human-machine interface.

7. The liquid medicine section filter and outer cover need to be equipped with a lid opening sensor. When the filter is opened, the corresponding pump should be cut off and an alarm should be triggered.

8. The heating system needs to be equipped with independent mechanical overheating protection; The wet process heating system needs to be equipped with independent tank overheating protection; The over temperature protection needs to be connected to the control circuit (not PLC controlled), and the power circuit needs to be directly cut off in case of over temperature.

9. All electrical box inlet and outlet ports must be designed with dust covers.

10. Warning signs for electric shock must be posted on the door of the electrical box, and there must be a sealing strip on the door of the electrical boxThe door can be tightly closed, and the electrical box door lock must be handle type.

11. The grounding wire of the main power supply must be connected to the equipment frame, and the wire must be pressed against the terminal; The main incoming terminal block must have a protective cover, and the colors of the main wires must be distinguished. L: red, green, yellow, N: blue, ground: yellow green dual color wires, with brown and blue as the positive and negative poles of the weak current power line, and black as the control line.

12. All electrical wires entering and exiting the electrical box must be blocked with fire-resistant materials to prevent dust and metal powder from falling into the box and causing safety hazards.

13. The equipment electrical box must be centralized, and the identification inside the electrical box must be affixed to the slot.

14. The PC host is designed in a drawer style for easy maintenance.

15. The electrical box adopts a vertical design for easy maintenance.

16. Equipment and power electrical boxes must be made of cold-rolled steel plates with a thickness of>1.2mm and a surface paint of 0.3mm or more

——Mechanical:

1. The moving and rolling of products should have safety protection related components (safety switches and protective parts).

2. The equipment body is flat and smooth, without sharp protrusions.

3. Mechanical structures should be designed to prevent hazards such as pinching and collisions.

4. Protective devices should be designed to immediately shut down or prevent operation when opened, with automatic shutdown induction in non safe areas.

5. Safety protection mechanisms (especially for sports mechanisms) require both software and hardware protection mechanisms.

——Pump:

After all motors have been working for a long time(Working for more than 24 hours), the surface temperature of the motor should not exceed 65 ℃.

——Institutional design:

1. The equipment must be designed with sufficient maintenance space (at least 1 meter);

2. For equipment that uses air compression, an oil and gas separator should be installed at the inlet of the equipment, and its installation location should be convenient for personnel to visually inspect. The oil and gas separator should have an automatic drainage function. Compressed air pipelines need to be equipped with pressure switches and capable of outputting pressure alarm signals;

3. The foot cups and foot pads required for adjusting the level of the equipment shall be provided by the supplier;

4. The main wiring of the equipment needs to be elevated above the equipment; The pipeline between the main equipment and the auxiliary trough needs to be laid overhead. If the span is greater than 2 meters, the pipeline needs to be supported and fixed with a suspended ceiling;

5. Electrical components (such as solenoid valves) exposed to the outside of wet process equipment and ancillary equipment in electroplating and etching areas must have protective covers.

6. The compressed air pipeline of wet process equipment should use PVDF or metal pipeline, and the compressed air components of wet process cannot be plug-in (threaded connection is required).

7. A pressure gauge needs to be installed at the inlet of the main water/ice water/hot water pipes of the equipment, and the pressure data needs to be uploaded to the equipment PLC; A thermometer needs to be installed at the inlet of the ice/hot water main pipe, and temperature data needs to be uploaded to the PLC.

8. Water/ice water/inlet needs to be equipped with filters (including non-stop replacement of filter element bypass pipeline).

9. The bottom of wet process equipment (including pipelines) requires a minimum clearance of 200mm from the floor.

10. For wet process chemical pipelines with temperatures greater than 45 ° C, SCH-80PVC/CPVC or PP/PVDF materials should be used.

——Electrical Design:

1. The inlet and outlet of the electrical control box must be on the side and bottom of the electrical control box, and the gap between the cable tray covers above the equipment must be sealed;

2. There should be a dedicated storage box for circuit diagrams in the electrical control box of the equipment;

3. The cooling fan of the equipment's electrical control box needs to have a rain proof cover (such as louvers, etc.), and its installation position cannot be placed on the top of the electrical control box to avoid liquid dripping into the top and causing equipment failure;

4. The electric control box door of the equipment must be equipped with a door lock, and the number of keys for the door lock must be in triplicate;

5. The placement of the mobile transformer of the equipment should be convenient for maintenance and should be elevated at least 20CM above the ground for 6S cleaning of the production line;

6. All transformers attached to the equipment must have independently controlled power switches on the primary side;

7. The PC needs to have a UPS uninterruptible power supply and voltage regulator, which can maintain power for more than 15 minutes during power outages. All wet process horizontal equipment transmission requires a UPS uninterruptible power supply to provide transmission for 15-20 minutes;

8. The electrical control box and accessory equipment attached to the equipment must be connected by the supplier (using the same brand of equipment).

9. For power lines with a current greater than 4A, circular terminals should be used to fix the wiring terminals, and open terminals should not be used.

10. The heater should be controlled by solid-state relays, and each heating group should have a separate leakage protection switch.

11. The PLC output adopts a unified 24V output, which controls the electrical load by converting 24V to 220V and driving 380V with 220V; PLC I/O needs to be configured with 3% backup (no less than 8 points each); At least one backup channel is required for each analog module.

12. Touchscreen or on-site PC should have an I/O monitoring interface; The monitoring interface should indicate the meaning of I/O.