Nanjing Long Recycled Power Switchgear, Dense Bus Duct Recycling

Installation Precautions for Distribution Boxes. If the elevation or vertical alignment of the distribution box (panel) exceeds the allowable deviation: This is due to inaccurate measurement and alignment or uneven ground, and should be corrected promptly. If the iron frame of the distribution box is not square: This is caused by not straightening and aligning before installation or the displacement of the fixing points during installation. Use a plumb line to realign and then secure it properly.

【Main Structure of Vacuum Circuit Breaker】The vacuum circuit breaker mainly consists of three major parts: the vacuum arc extinction chamber, the electromagnetic or spring operating mechanism, the bracket, and other components. The vacuum arc extinction chamber, which varies in type of switch, includes an external shielded cover ceramic vacuum arc extinction chamber, a cup-shaped longitudinal magnetic field miniaturized vacuum arc extinction chamber, and an internally sealed glass bulb arc extinction chamber. Its basic structure is as follows: ① The airtight insulation system (shell) is an airtight container composed of an airtight insulation tube made of ceramic, glass, or microcrystalline glass, a moving end cover, a fixed end cover, and a stainless steel bellows. To maintain airtightness, strict operation procedures are required for the sealed type, and the material itself should have low permeability and minimal internal gas release.

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How to describe the action conditions of a circuit or relay using the actual status of the equipment (the equipment status visible on site): First, describe the conditions of the circuit using the opening and closing states of the circuit's contacts, and then replace the description based on the correlation between the opening and closing states of the contacts and the equipment's status (e.g., replace the contact state of the "remote/local control switch" in the remote control circuit with the "remote/local control switch" in the switch cabinet's "remote/local control switch" in the "remote" position. This ability must be developed step by step; otherwise, reviewing drawings will remain in the original state, only able to see the opening and closing of the contacts and whether the relay is energized, without being able to combine it with monitoring and operation of the equipment in operation. How to clarify the connections between equipment with a box diagram in an expanded drawing and other external parts? First, identify the terminal numbers of the box diagram equipment, then use the equipment's installation manual or manufacturer's diagram that can display the internal wiring diagram to find the terminal numbers that connect to the outside in these drawings, and then connect them to the internal circuit. Then, relate them to the external circuit through the outwardly connected terminals. A complete switchgear cabinet is a combination of all the components involved in the complete switchgear. Complete switchgear cabinets are categorized by voltage level, where AC1000V and below are typically referred to as low-voltage complete switchgear cabinets (e.g., PGL, GGD, GCK, GBD, MNS, etc.), and AC1000V and above are referred to as high-voltage complete switchgear cabinets (e.g., GG-1A, XGN15, KYN48, etc.). Sometimes, the high-voltage cabinets with a voltage of AC10kV are also called medium-voltage cabinets (e.g., XGN15 type 10kV ring network cabinet).