一、What is a complete set of equipment?
A complete set of equipment refers to an industrial combination device that produces finished or semi-finished products.
It can be a workshop, a production line, a workshop or a factory. It can be a single item of equipment of a profession, or it can be a comprehensive equipment of several professions. Since the inspection procedures and specific practices of imported complete sets of equipment and export complete sets of equipment are different, they are introduced separately.
二、Wanshang Power tells you what is a complete set of power equipment?
A complete set of power distribution device is a complete set of equipment supplied by a manufacturer, which is assembled into a power distribution device after being transported to the site. It divides the electrical main circuit into several units, each unit is a circuit, and assembles the circuit breakers, knife switches, current transformers, voltage transformers, and protection, control, measurement and other equipment of each unit in an overall cabinet. In a power plant, a power device composed of multiple high-voltage switch cabinets installed in a power plant, substation or power distribution station is called a complete power distribution device.
三、Wanshang Power tells you what is electrical equipment?
Electrical equipment, first of all, it is electrical equipment. And switch and contactor circuit breaker transformers are a class. But it has its uniqueness. Because it's a set. That is to say, a series of equipment are combined together through certain specifications (drawings, technical requirements, process requirements) to form an organic whole. Such equipment is called a complete set of equipment. Usually, the switch cabinets, box-type substations, etc. we make are counted as complete sets of electrical equipment. This is a term in the industry. Electrical complete equipment refers to a complete equipment composed of shells, busbars, primary and secondary components, auxiliary materials, etc. It operates in the power grid and plays the role of receiving and distributing electrical energy, and at the same time plays a role in the power equipment. control and protection.
The electrical equipment is mainly divided into:
0.4kV, 0.69KV, 1.2KV low-voltage switchgear;
3.6KV, 7.2KV, 12KV, 24KV medium voltage switchgear (current development trend), 40.5KV high voltage switchgear, power box (cabinet), lighting box, control box (cabinet, table), protection screen, DC screen, etc.
There are three main types of product models:
1、Low voltage: PGL (not recommended), GGD (safe, reliable and cost-effective, so it is widely used), BFC (not recommended), GCL (K) (not recommended), GBD, GCS (Senyuan Design), MNS (ABB Technology);
2、Medium and high voltage: GG-1A (F) (not recommended), XGN2-12 (not recommended), KYN1-12 (not recommended), JYN2, 6-12 (not recommended), HXGN-12 (F ), XGN15-12 (SF6), KYN18-12, KYN28-12 (mainstream products on the market), KYN□-24 (becoming a development trend), JYN1-40.5 (not recommended), XGN□ (JGN□) -40.5 (not recommended), KYN61-40.5 (mainstream products on the market), KYN96-40.5;
3、Box type: YBM□-12 (24, 40.5)/0.4, ZGS9 (11)-12 (40.5)/0.4, 10KV medium voltage switch station, 35KV high voltage switch station.
四、Questions and answers related to high and low voltage complete sets of equipment
1、What is the international electrotechnical standard adopted for low-voltage switchgear in my country?
The international electrical standard adopted by my country's low-voltage switchgear is IEC439 "Low-voltage switchgear and control equipment".
2、What is the domestic standard for low-voltage switchgear in China?
The domestic product standards implemented by my country's low-voltage switchgear include:
GB7251-87 Low-voltage switchgear
ZBK36001-89 Low-voltage withdrawable switchgear
JB587-91 Low-voltage fixed closed switchgear
五、Wanshang Power tells you the price composition of electrical complete sets of equipment
1、The price of primary and secondary components;
2、The price of auxiliary materials, including: secondary wire, terminal, wire nose, wire clip, bobbin, number tube, character code, cable tie, standard parts, etc.;
3、The price of the busbar, the amount of the busbar is budgeted according to the one-time plan diagram;
4、The shell price shall be quoted by the professional shell manufacturer according to the one-time plan; the box-type substation and non-standard box (cabinet) shall be calculated according to the size of the box.
5、Packaging and shipping costs;
6、Comprehensive expenses of the enterprise, including management fees, labor wages, taxes and profits, etc.;
7、Other expenses, such as a certain fee to be paid to the bidding company if the bid is won
六、Wanshang Power tells you the quotation process and matters needing attention
1、Comprehensive digestion of drawings:
According to the drawings provided by the user, the catalog of drawings is checked first, and then assigned and classified. Understand the design intent of the project in accordance with the design instructions and technical requirements of the drawings (if there are bidding documents, the technical requirements of the bidding documents), consider the price required for the calculation of the variable scheme, and pay attention to the floor plan (floor plan The above reflects whether there is a busbar bridge and the length of the busbar bridge between the cabinets).
2、Related Notes:
①、As far as high-voltage cabinets are concerned, in order to meet the five-proof requirements, the incoming cabinet needs to be equipped with a live display (mandatory type: DXN-10, 24/35Q) and an electromagnetic lock, and the outgoing cabinet needs to be equipped with a live display (prompt type: DXN-10/35T ) and grounding switch interlocking device.
②、When the two-way power supply is in, consider the self-switching device, and consider the electrical and mechanical interlocking device (three-in-two) between the two-way power supply and the bus tie.
③、Sulfur hexafluoride ring main unit and KYN28-12 central cabinet generally need to be equipped with temperature and humidity controller and heater.
④、If the interphase and interphase-to-ground distances cannot meet the electrification requirements, busbar vulcanization treatment or special-shaped busbars or heat-shrinkable sleeves for busbar sleeves should be used, and the joints should also be covered with an insulating cover.
