wiedemann electrical components, German wiedemann models, wiedemann prices

wiedemann electrical components are parts that connect batteries to external conductors. In electrical engineering, terminals mostly refer to wiring ends, also called terminal blocks. Types include single-hole, double-hole, socket, hook, etc. By material, they are classified as silver-plated copper, galvanized copper, copper, aluminum, iron, etc. Their main function is to transmit electrical signals or conduct electricity. In engineering, they are interfaces reserved by pre-station works for post-station works, serving as embedded facilities for post-station interface projects. A terminal cross-section inspection microscope produces an upright three-dimensional spatial image when observing objects, with strong stereoscopic effect, clear and wide imaging, and a long working distance; equipped with a high-precision harness terminal image measurement and analysis system, it forms a harness terminal inspection microscope. The perfect combination of a high-quality optical system and a high-resolution camera makes cross-section images clearer, and the unique fixed magnification and grading make measurements more precise. To detect whether terminals are crimped well, professional testing equipment is required. Common terminal testing equipment includes: terminal cross-section analyzers

wiedemann electrical component applications

Wire and cable products used in power systems mainly include overhead bare wires, busbars (busbars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber-sheathed cables, overhead insulated cables), branch cables (replacing some busbars), magnet wires, and electrical equipment wires and cables for power equipment. Wire and cable products used in information transmission systems mainly include telephone cables, TV cables, electronic cables, RF cables, fiber optic cables, data cables, magnet wires, power communication cables, or other composite cables. Except for overhead bare wires, almost all other products in this category have applications, but mainly power cables, magnet wires, data cables, and instrument cables.

wiedemann electrical component performance

The performance of fiber optic connectors primarily involves optical performance, along with considerations such as interchangeability, repeatability, tensile strength, temperature, and mating cycles. 1. Optical performance: The key optical performance requirements for fiber optic connectors are insertion loss and return loss. Insertion loss, also known as connection loss, refers to the reduction in effective optical power in the link caused by the introduction of the connector. Lower insertion loss is preferable, typically required to be no greater than 0.5dB. Return loss indicates the connector's ability to suppress optical power reflection in the link, with a typical value of no less than 25dB. For connectors used in practical applications, the ferrule surface undergoes specialized polishing to achieve higher return loss, generally no lower than 45dB. 2. Interchangeability and repeatability: Fiber optic connectors are universal passive components. Connectors of the same type can generally be combined arbitrarily and reused multiple times, with the resulting additional loss typically remaining below 0.2dB. (3) Tensile strength: Finished fiber optic connectors are generally required to have a tensile strength of no less than 90N. (4) Temperature: Generally, fiber optic connectors must operate normally within a temperature range of -40oC to +70oC. (5) Mating cycles: Most fiber optic connectors in use can withstand more than l002 mating cycles.

wiedemann electrical component composition

Internal accessories of circuit breakers: Auxiliary contacts are mechanically linked to the opening and closing mechanism of the circuit breaker's main circuit. They are mainly used to display the open/closed status of the circuit breaker. Connected to the control circuit of the circuit breaker, they control or interlock related electrical devices through the opening and closing of the circuit breaker. Alarm contacts are used for accident alarms in circuit breakers. These contacts only act after the circuit breaker trips and opens. They are mainly used when the load of the circuit breaker experiences faults such as overload, short circuit, or undervoltage, causing free tripping. The alarm contact switches from its original normally open position to a closed position, connecting indicator lights, electric bells, buzzers, etc., in the auxiliary circuit to display or remind of the circuit breaker's fault trip status. Since the probability of free tripping due to load faults is not high. Shunt release: A shunt release is a release excited by a voltage source, and its voltage is independent of the main circuit voltage. A shunt release is an accessory for remote opening operation. When the power supply voltage is any value between 70%% and 110%% of the rated control power supply voltage, the circuit breaker can reliably open. The shunt release operates in short-time duty; the coil energization time generally cannot exceed 3S, otherwise the coil will burn out. To prevent coil burnout in molded case circuit breakers, a microswitch is connected in series with the shunt release coil. When the shunt release attracts via the armature, the microswitch switches from normally closed to normally open. Since the control circuit for the shunt release power is cut off, even if the button is manually held down, the shunt coil will not be energized, thus avoiding coil damage. After the circuit breaker is reset and closed, the microswitch returns to the normally closed position. Undervoltage release: An undervoltage release is a release that causes the circuit breaker to open with or without delay when its terminal voltage drops to a specified range. Under thermal conditions, it should ensure reliable closing of the circuit breaker. Therefore, when a certain voltage drop occurs in the power supply voltage of the protected circuit, it can automatically open the circuit breaker to cut off the power, protecting downstream load appliances or electrical equipment from undervoltage damage. During use, the undervoltage release coil is connected to the power side of the circuit breaker. The circuit breaker can only close after the undervoltage release is energized.

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