Customer 3PH 1100-1400A power regulator

Customer 3PH 1100-1400A power regulator

Brand: CD Automation

Origin: Italy

Brand Description: Since 1987, CD Automation has been providing thyristor units - SCR, static relays, soft starters, and high-quality temperature regulators for the industrial automation field. One of the factors contributing to success is building a sales team with a strong technical background to collaborate with customers in finding the best solutions. Italian CD Automation products include controllers, starters, relays, and are widely used in textiles, plastics, microwave ovens, and other industries.

Technical specifications for Italian CD Automation CD3000S 3PH

Voltage power supply: 24V min, 480V Max, 600V as required.

Input signal: SSR (OFF state<1Vdc ON=4 ÷ 30 Vdc) triggered.

Shooting: Zero crossing ZC.

Auxiliary voltage supply: 10Va power consumption.

Fan voltage: 230V ± 15%.

Certification: Compliant with EMC; CULus is provided as an option.

Installation: DIN rail installation up to 90A.

Working temperature: including 0 ÷ 40 ° C to 90A (for higher temperatures, please refer to the derating curve).

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Customer 3PH 1100-1400A power regulator

Shandong Sailite's main products include various sensors, hydraulic and pneumatic components, optical detection equipment, analytical instruments, experimental equipment, electrical equipment and components, brake transmission components, machines, tools, etc.

Industrial Knowledge

Common faults of pressure reducing valves: The outlet pressure is very low, and even if the pressure regulating handwheel is tightened, the pressure cannot rise

① The inlet and outlet of the pressure reducing valve are connected incorrectly: there is a design error in the installation plate for the plate valve, and there is a connection error for the tube valve. The inlet and outlet of the J-type pressure reducing valve are exactly opposite to those of the Y-shaped relief valve. Please pay attention to the steel seal markings (Pl, P2, L, etc.) near the oil port on the valve when using it, or refer to the hydraulic component product catalog. Do not make design or connection errors.

② The inlet pressure is too low, and after passing through the pressure reducing valve core and throttling port, the output pressure from the outlet is even lower. At this time, the reason for the low inlet pressure should be identified (such as a malfunction of the relief valve).

③ The downstream circuit load of the pressure reducing valve is too small, and the pressure cannot be established. At this time, it is possible to consider connecting a throttle valve in series downstream of the pressure reducing valve to solve the problem.

④ The contact between the pilot valve (cone valve) and the valve seat fitting surface is poor due to the retention of dirt, resulting in poor sealing; Or the pilot cone valve has serious scratches, and the valve seat is out of roundness and has gaps, causing the pilot valve core to not fit tightly with the valve seat hole.

⑤ During disassembly and repair, the cone valve is missing or not installed in the valve seat hole. For this, the assembly or sealing condition of the cone valve can be checked.

⑥ The long damping hole on the main valve core is blocked by dirt, and the oil in chamber P2 cannot flow into the main valve spring chamber through the long damping hole e. The feedback pressure from chamber P2 cannot be transmitted to the pilot cone valve, causing the pilot valve to lose its regulating effect on the outlet pressure of the main valve. After the damping hole is blocked, the main valve P. The chamber loses the effect of the oil pressure p3, making the main valve a linear spool valve with weak spring force (only the main valve balance spring). Therefore, when the outlet pressure is very low, the force of the balance spring can be overcome to close the throttle port of the pressure reducing valve YMIN. In this way, the inlet pressure p1 is greatly reduced to p2 through the YMIN throttle port, and the outlet pressure cannot increase. The long damping hole should be unobstructed.

⑦ The pilot valve spring (pressure regulating spring) is mistakenly installed as a soft spring, or due to spring fatigue causing deformation or breakage, the p2 pressure cannot be adjusted high and can only be adjusted to a certain low set value, which is far below the maximum regulating pressure of the pressure reducing valve.

⑧ The pressure regulator handle cannot be fully tightened due to thread strain or insufficient effective depth, resulting in the inability to adjust the pressure to the maximum.

⑨ The sealing between the valve cover and valve body is poor, resulting in severe oil leakage. The possible causes may be missing or damaged O-rings, loose clamping screws, and errors in the flatness of the end face during valve cover processing, which are generally convex on all sides and concave in the middle.

⑩ The main valve core is stuck in a small opening position due to dirt, burrs, etc., resulting in low outlet pressure. Can be cleaned and deburred.