1 Scope of application

Various stainless steel terminal boxes and power overhaul boxes produced by our company are used for on-site control of 35KV, 110KV, 220KV, 500KV and below substations and power plants. The box body is made of high-quality stainless steel material, and the structure is designed according to outdoor waterproofing. It has good strength, high hardness, beautiful surface, good airtightness, strong corrosion resistance, long life, and no maintenance. It is the most ideal replacement product for ordinary terminal boxes and power maintenance boxes. And higher-level products.

Stainless steel terminal box and power overhaul box are suitable for various types of climatic conditions and operating environments, especially suitable for indoor and outdoor occasions in coastal areas and dusty environments. They are widely used in power grids, and their operation is stable. Recognition of each user. The terminal box uses a combined static relay designed and produced by our company. This relay not only has a wide range of users in the national power system, but also is very popular in the power system of India, Pakistan, Indonesia, Turkey and other countries.

1.1 Main standards followed

This equipment complies with the following relevant standards during production, installation, and commissioning. All standards will be revised. The possibility of using the latest versions of the following standards should be considered when using the equipment.

IEC439 low-voltage switchgear and control equipment

GB1497-1985 basic standard for low-voltage electrical appliances

GB998-1982 Basic test methods for low-voltage electrical appliances

GB7621-81 Rated current of electrical equipment

GB/T2681-1981 Wire color in low-voltage complete equipment

GB/50054-95 Low Voltage Power Distribution Design Code

GB50171-92 Electrical installation engineering panel, cabinet and secondary circuit connection construction and acceptance code

GB191-90 Packaging, Storage and Transportation Graphic Mark

GB7251 low voltage switchgear

GB4208-93 Shell protection grade

DL408—91 Electrical safety work regulations,

DL/T 5136-2001 Technical specification for secondary wiring design of thermal power plants and substations

JB5777.2 General technical conditions for control and relay protection boxes (boxes, sets) for secondary circuits in power systems

JB5777.3 Basic test methods for control and relay protection boxes (boxes, platforms) for secondary circuits in power systems

2 Principle advancement

2.1 The advanced nature of the box structure design

The production and production of various stainless steel terminal boxes and power supply inspection boxes produced by our company are made by certain production and production processing techniques, which can fully play an important role and value in use. The box shell is made of high-quality stainless steel forged and welded by a well-known brand. The thickness of the shell material is> 2mm. The door is made of double layers. There is a drainage groove between the box body and the door, and the mouth and the door are pressed by a sealing strip. The door has a locking and waterproof function. It has strong dustproof and waterproof performance and can be used indoors and outdoors.

The stainless steel terminal box and power supply inspection box are designed to maximize the space inside, and the terminals (or components) can be assembled according to the actual application. The wiring is convenient, firm and reliable.

2.2 The advanced nature of environmental control in the box

The stainless steel terminal box is equipped with temperature and humidity controllers to prevent condensation and preset temperature. The temperature and humidity controller is composed of a temperature sensor and a condensation sensor, which can monitor the temperature and humidity changes in the terminal box at any time. When the ambient temperature inside the box is lower than the preset temperature or condensation is about to occur, the controller automatically Start the heater to run and heat to increase the ambient temperature inside the box and destroy the small environment that produces condensation. When the condensing condition in the box disappears or the ambient temperature reaches the preset temperature, the heater is automatically cut off to stop heating, and the controller resumes monitoring.

2.3 The advanced nature of the production process

The company has specialized production process and process documents (the "Introduction to the Production Quality Management and Control of Bidding Products" has detailed production process control requirements). All terminal boxes and power supply inspection boxes are operated in strict accordance with standard operating instructions. The line has good consistency, orderliness, reasonable laying and uniform binding, which meets the requirements of horizontal and vertical, neat, clear, and convenient for maintenance, operation and testing.

3 Product features

3.1 The door and box body adopt a fully enclosed structure, equipped with a sealing rubber strip and a waterproof groove, which have the functions of rain, wind, sand and dust.

3.2 The upper and lower sides of the box are equipped with special respirators, which can form convective air to cool down and ensure that the internal components of the box are dry.

3.3 The stainless steel door shaft is adopted, and the inside of the box door is equipped with a limit and anti-rebound mechanism.

3.4 The lead knockout hole is improved to a "I"-shaped detachable structure, which facilitates the introduction of cables.

2.5 The lighting in the box adopts a refrigerator-type structure, and the light is on when the door is opened, which is convenient for maintenance.

3.6 The exterior of the box adopts micro-marking and non-marking manufacturing process to make the appearance more beautiful.

3.7 Terminal boxes used in humid environments or frosting and condensation seasons can be equipped with the GS-1 type condensation controller produced by our company to prevent insulation degradation and short-circuit failures caused by frosting and condensation, making it safer to use reliable.

4 Product raw materials and accessories level

4.1 The company is a long-term partner of internationally renowned brands ABB, Siemens, and Schneider. The stainless steel terminal box and power supply repair box are designed and installed in the circuit. We provide high-quality circuit breakers produced by internationally renowned brands ABB, Siemens and Schneider for users to choose to ensure Safe and normal operation of the entire circuit.

4.2 The wiring terminals in the stainless steel terminal box and the power overhaul box adopt URTK/S, UK5N, USLKG5 products from the internationally renowned brand Nanjing Phoenix to ensure the mechanical and electrical reliability of the internal wiring of the terminal box.

4.3 The stainless steel terminal box and the power overhaul box are made of 316 high-quality steel from the internationally renowned brand Baoshan Iron and Steel Group Corporation.

4.4 The wire used for screen matching uses high-quality products of internationally renowned brand Jinlongyu.

4.5 The stainless steel terminal box and the power overhaul box are designed and installed with a 220V, 16A power socket and a maintenance light for users to use during daily inspection and maintenance.

5 packaging

5.1 If the product is delivered by rail or freight company, the packaging shall be in wooden boxes and meet the following requirements:

The packaging box has sufficient strength; the product is firmly cushioned, clamped, and fixed in the packaging box.

The fixing method of the product in the box adopts buffer material to plug tightly, wooden block positioning and tightening, and bolt tightening.

The product does not have direct contact with the outer packaging box board.

The packaging must have specific waterproof measures and the waterproof level of the corresponding export box.

5.2 If the company's controllable car is delivered to the scene, other materials can be selected according to the local material supply;

6 Random files of the product

Product installation instructions;

Certificate of conformity

Instructions and certificates of other components;

Terminal diagram, principle diagram;

Packing list

7 Product order

Please state the product model, specifications, parameters and quantity when ordering.

If you have special requirements, you need to mention special requirements, and provide relevant drawings for clarification when necessary.

1 Product performance indicators

1.1 Use condition parameters of terminal box

The altitude does not exceed 2000 meters;

Working environment temperature: -20 ~ +55 ℃, the average temperature within 24h shall not be higher than +40°C.

The relative humidity of the environment is not more than 90% (the relative ambient temperature is 20℃±5℃)

There is no conductive or explosive dust, no gases and vapors that corrode metals and damage insulation;

The installation site has no continuous severe vibration and shock, and there is no place where electrical components are corroded.

1.2 Product performance parameters of terminal box

Rated voltage: 500V;

Rated current: 1000A, 600(630), 400A

Rated short-circuit breaking current: 15KA;

Withstand current at rated short-circuit: 15KA;

Constant peak withstand current: 30KA.

Protection level: IP65

Relative humidity of storage environment: ≤95% RH

Number of inlets and outlets: 4 ×φ10

Material and color: stainless steel body structure

Shape and installation dimensions: customized according to user drawings

1.3 Technical parameters of temperature and humidity controller

Power supply: AC 220V 50Hz

Control temperature: 0℃～50℃

Control temperature error: ±1℃

Control condensation: relative humidity ≤93%

Power consumption: ≤3W

Withstand voltage: 2kV 50Hz 3min

Three-proof function (TH): Prevent gas containing acid, alkali and salt

Anti-interference: work normally under 4.4KV/W field strength