Test Terminal Block

Test terminal block
Test terminal blocks are used for in-situtesting of electrical energy meters viz.Trivector metsrs, mdi and other ct operated meters and protective relays

200 nos. Aobot 40 kgs.

Terminal block

Jf5 series products can be used in the circuit of ac50hz(60hz), rated voltage is 660v or dc440v , to connect round copper conductor which rated cross-section is 0.75-25mm2, performance in accordance with gb/t14048.1-2000"general regulations for low voltage switchgear and controlgear", and jb/t9659.1-1999"terminal block used in low voltage switchgear and controlgear", and also iec60947-7-1:1998 standard. All the type-tests are eligible by china quality supervise and inspection center for electric control and distribution, and achieved model certificate issued by tianjin design & research institute of electric drive, and no. Is f0163.

Pitch: 3.5 to 10.0mm
Position: 2 to 24pins
Voltage rating: 125 to 300V
Current rating: 6 to 20A
Wire range: 0.75 to 1.5m¦
Solid wire (AWG): 14 to 28
Standard wire (AWG): 12 to 26
Torque (Ib-In): 0.4 to 3.5
Screw: M2.5 to M3
Wire strip length: 5 to 8mm
Withstanding voltage: 1.25 to 2KV

At the beginning of last year, Lawrence sent an email to ask for help. He is a purchaser of a hydraulic equipment company in Italy and has cooperated with AAK for 2 or 3 years. Almost all of the orders are a small number of hydraulic check valves with high requirements. When encountering problems, he always asks for help from AAK, and AAK is also happy to help him. After several rounds of email communication, it turned out that the power unit for controlling the hydraulic lifting column produced by their company had a customer complaint 3 months after sales. Their engineers found a leak on the valve block of the power unit, that is, around the valve hole equipped with the hydraulic pilot operated check valve. It is preliminarily judged that the leakage should be caused by the wear of the seal of the hydraulic pilot operated check valve. However, after dismantling the hydraulic pilot operated check valve, it is found that the sealing ring is intact.

After Lawrence communicated with the original manufacturer of hydraulic pilot operated check valve, they both thought that there should be no problem with the hydraulic pilot operated check valve or valve block, because the test data before shipping were qualified. The leakage problem should be caused by the wrong operation of the installation personnel of their company. Lawrence seemed to understand because it is true that the test result of the hydraulic pilot operated check valve originally shipped was OK. Lawrence asked their engineers to reinstall it. As a result, it worked normally and everyone thought the problem had been solved. But 3 months later, the same problem happened again, and the customer could not accept and requested to return goods. The boss was very angry and asked Lawrence and the engineer to completely solve the leakage problem of the hydraulic pilot operated check valve. This is why Lawrence emailed to AAK for help.

AAK engineers analyzed according to the valve block integration diagram and the drawing of hydraulic pilot operated check valve provided by Lawrence. There is an assumption that the frequent vibration of the power unit of the hydraulic lifting column affects the stability of the installation of the hydraulic pilot check valve. Following this idea, it is found that the hole depth of the threaded socket integrated with the valve is not enough, which leads to the loosening of the jack position of the hydraulic pilot operated check valve. This problem can only be solved by adjusting the depth of the jack, increasing the thread torque of the hydraulic pilot operated check valve and increasing the bonding area between the valve and the hole. The next day I emailed Lawrence the idea of our engineer's. If we want to verify this idea, we can only make samples. One month later, AAK sent the redesigned hydraulic pilot operated check valve and integrated valve block to Lawrence.

Product model: plum blossom 35-40-50mm

Product Name: quincunx cushion block concrete spacer, Concrete Block Spacer , Square Gray Cement Cover Block
Product specification: the thickness of protective layer can be 35mm or 40mm or 50mm

Product color: Cement ash

The company specializes in the production of concrete cushion blocks, high-speed railway cushion blocks, cement cushion blocks, bridge cushion blocks and reinforcement protective layer cushion blocks, which are widely used in the construction of high-speed railways, subways, tunnels, expressways, bridges, airports, wharfs, civil buildings and other projects.

Summary of high strength concrete cushion blocks:

1. High cushion block strength

It is made from a special formula through long-term test. The compressive strength reaches 60MPa and is not easy to break. Its practicability is greatly high

Apply to cushion blocks of other materials.

2. The materials with high durability are the same as that of concrete, with strong adhesion, consistent expansion coefficient and even steam

There is no gap during curing, which can be fully integrated with concrete and effectively prevent air, rain, sea water, etc

The reinforcement corrosion caused by penetration and the concrete falling off, without the worry of mortar and plastic cushion block, greatly improves the reinforcement

Durability and safety of concrete.

3. The protective layer is highly accurate

The high-strength concrete cushion block has accurate overall dimensions and is engraved with the steel seal of the height of the protective layer, which is completely different from the mortar cushion

Randomness of blocks.

4. No color difference after demoulding

Small contact surface between cushion block and formwork, high stability, no "patch" after demoulding, consistent overall feeling, especially suitable for

Fair faced concrete structure.

5. Low total alkali content

The use of environmentally friendly materials and low total alkali content.

6. Low cost

7. The construction is simple and fast