GCS switch cabinet drawer

 GCS Low-voltage withdrawable switchgear (hereinafter referred to as the device) are two joint design group design developed in line with national conditions, with high technical performance requirements of industry, according to authorities, the majority of electricity users and design units, able to adapt to the development of the electricity market needs and introduce products to compete with the existing low-voltage switch cabinet, the device has now been widely choice for power users. Equipment for power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries and distribution systems. High degree of automation in large power plants, petrochemical system, computer interface requirements and place, as a three-phase AC frequency of 50 (60) Hz, rated working voltage of 380V (400) V, (600) V, rated current of 4000A and below the hair, power distribution systems, motor centralized control, low voltage power distribution equipment used in reactive power compensation. Form the basic organizational unit, see Figure 1. Design of the device meets the following criteria IEC439-1 "Low-voltage switchgear and control equipment" GB7251 "Low-voltage switchgear" ZBK36001 "low-voltage withdrawable switchgear" Second, the product model and the meaning Third, the conditions surrounding air temperature is not higher than 3.1 + 40 ° C, not lower than -5 ° C. 24-hour average temperature not higher than + 35 ° C. More than is required to run the actual situation derating. Within 3.2 to use, place of use to the altitude must not exceed 2000m. 3.3 ambient air relative humidity at the highest temperature does not exceed + 50% 40 ° C when, at a lower temperature allows a greater relative humidity: as + 20 ° C for 90 percent, should take into account possible changes due to temperature occasionally produce condensation effects. 3.4 device installation and the vertical gradient of not more than 5 °, and the entire group of cabinet column relatively flat (in line with GBJ232-82 standard). 3.5 devices should be installed in the absence of severe vibration and shock, and not enough to make electrical components place undue corrosion. 3.6 users have special requirements, can be resolved through consultation with my company. Fourth, the main technical parameters 4.1 Basic technical parameters in Table 1. Table 1 rated main circuit voltage (V) AC 380 (400), (660) auxiliary circuit rated voltage (V) AC 220,380 (400) 110,220 nominal frequency DC (Hz) 50 (60) Rated insulation voltage (V) 660 (1000) Rated Current (A) the level of bus ≤4000 Vertical Bus (MCC) 1000 busbar rated short time withstand current (kA / 1s) 50,80 busbar rated peak withstand current (kA / 1s) 105,176 frequency test voltage (V / 1min) primary circuit auxiliary circuit 1760 2500 bus three-phase four-wire three-phase five-wire ABCPE.N ABCPEN Protection class IP30, IP40 V. Structural features (see Figure 2) 5.1 Main frame means using 8MF steel, architecture is part of the welding assembly and two structural forms. Each installation modulus E = 20 mm hole on the main frame. Each function room 5.2 device strictly separated from the compartment is divided into functional unit room, bus room, cable room, the function of each unit is relatively independent. 5.3 device cabinet size series as shown in Table 5. (Mm) Table 5 High 2200 wide deep 4006008001000 80010008001000 6,008,001,000,600,800 1000 5.4 functional unit a. Drawer storey modulus for 160㎜ (see Figure 9-10). Divided 1/2 unit, Unit 1, Unit 1, Unit 2, Unit 3, five dimensions series. Unit circuit rated current 400A and below. b. drawer change only changes in the height dimension, the width and depth dimensions remain unchanged. Drawer unit having the same function as good interchangeability. c. Each MCC cabinets can be installed up to 11 units of a drawer or 22 1/2 unit drawer. One uses a versatile drawer unit above the rear panel (see Figure 18) d. Drawer according to the current size of the inlet and outlet connectors using the same specification sheet structure of the different number of pieces. (See Figure 6-8) e.1 / 2 drawer unit and adapter cable compartment using backplane structure ZJ-2-type adapter. See Figure 7 adapter. f. drawer unit and adapter cable compartment divided by the current file with the same size rod or tube-type structure ZJ-1 adapter. Figure 6 adapter shape. g. drawer panel has open, close, testing, and other obvious signs out of position (see Figure 11-12) h. drawer unit with mechanical interlock devices. (See Figure 13-14) 5.5 feeder cabinet and motor control cabinet has dedicated cable connection compartment, functional rooms with cable indoor unit via the adapter cable or adapter to achieve copper, both to improve the use of reliable cable resistance, but also greatly facilitate the users of the cable installation and maintenance. Cable compartment has two width sizes (240㎜ and 440㎜) are available, depending on the number of cables, installation and maintenance section and user convenience and requirements. (See Figure 3) 5.6 device features a logarithmic unit auxiliary contact unit and over 32 pairs, 1/2 units of 20 pairs, to meet the needs of the user and the computer automation interface. 5.7 Taking into account the use of ordinary dry-type transformers and oil immersed transformer of security of the economy, both devices can easily dry-type transformers and a group consisting of columns, you can easily connect with the oil immersed transformer low voltage bus. 5.8 in the drawer as the mainstay, has drawn and fixed, you can mix combinations, arbitrary choice. 5.9 device connected to a three-phase five-wire and three-phase four-wire system design, design department and the user can easily choose PE + N or PEN way. 5.10 Cabinet protection rating of IP30, IP40, you can choose according to user needs. Six, the device characteristics to improve the thermal capacity 6.1 adapter, and an additional temperature reduced significantly due to the temperature rise adapter connectors, cable head, spacer plates brought. 6.2 between the functional units, the partition between the compartments clear, reliable, due to failure of a unit without affecting the other units of work, so that failures confined to a minimum. 6.3 Bus flat-mounted arrangement makes moving the device, good thermal stability, can withstand 80 / 176kA short circuit current impact. Quantity 6.4 MCC cabinet single cabinet loop 22 times more to take full account of the large unit capacity power generation, petrochemical and other industries automation electric gate (machine) group needs. 6.5 devices connected to the external cables in compartment complete with cable, the cable can be up and down and out. Zero sequence current transformer in the cable compartment, making installation and maintenance. 6.6 The same power distribution system that can match by limiting short-circuit current limiting reactors, stable bus voltage at a certain value, but also reduce the component parts of the short-circuit strength requirements. 6.7 drawer unit has a sufficient number of secondary insert plug (1 unit and more than 32 pairs, 1/2 units of 20 pairs). Computer interface and automation to meet the number of contacts of the circuit requirements. Seven, the installation and use of the product after reaching the place of receipt, we should first check the packaging is intact, identify problems and shall promptly notify the relevant departments to contract business records, jointly analyze the causes and make visas and deal with the aftermath. For not installed immediately and should be placed in the temporary custody order requirements appropriate place according to the normal conditions of use and electrical equipment, for safekeeping. 7.1 Product installation should be hungry installation diagram (see Figure 1-3 and Table 7-9). Basic channel and bolt bolted way when owned by the user. When the main bus connections, such as the surface due to the transport, storage and other reasons is not required to flat after flat connections are tight. 7.2 device installed individually or as a column, its verticality and counter irregularities and deviations sewing cabinet clearance in accordance with Table 6 provides. Table 6 times project Tolerance (mm) 1 3.3 2 degrees vertically adjacent to the top level of the top two rows of two cabinet cabinet 53 cabinet edge roughness of two adjacent rows of cabinets a side seam 54 cabinet indirect 2 7.3 product installation After the pre-commissioning checks and test a. Check the cabinet finish or other covering material (eg spray) for damage, whether inside dry and clean. b. The operating mechanism is flexible electrical components should not have jam or operating force is too large phenomenon. c. The main electrical appliances off the main and auxiliary contacts are reliable and accurate. d. drawer pull or draw-out mechanism should be flexible, lightweight, non-jamming and collision phenomenon. e. move out of the drawer or the structure of the center line should be consistent static contact, the contact should be tight contact. Primary and secondary contact insertion depth shall comply with the requirements. Mechanical interlocking or electrical interlocks action should be correct, lockout or release should be reliable. f. the same size drawer can easily be interchanged without jamming and collision phenomenon. g. The ground contact between the drawer and the cabinet should be in close contact, when the drawer is pushed, the drawer of ground contact should first contact than the main contacts, ground contacts after the main contacts disconnected than out. h. meter scale tuning, transformer ratio and polarity changes should be correct. i. fuse fuse specifications shall comply with the requirements of engineering design. j. Protection rating and setting value should be correct, reliable action. k. 1000 relay megger insulation resistance value shall not be less than 1MΩ l. to connect each bus should well insulated supports, mounts and other accessories should be solid and reliable installation. 7.4 Cautions a. Device is not installed against a wall, positive operation, maintenance of low voltage distribution cabinet sided. Cabinet and maintenance access doors, the assessment must be qualified professionals to enter or open operation, inspection and maintenance. b. air circuit breakers, molded case circuit breakers after several hours together, especially after short-circuit, together later, would contact the local burn and produce carbon-based materials, the contact resistance increases, should breaker manual maintenance and repair. c. After installation and maintenance, must be strictly checked between the isolation, segregation between functional units, in order to ensure that this unit good functional compartmentalization to prevent the failure to expand. Eight Orders order contract contains the following: 8.1 Product models include a full program of main circuit and auxiliary circuit scheme number number; 8.2 sequence diagram of the main circuit system combinations; 8.3 auxiliary circuit electrical schematics; 8.4 cabinet components list; 8.5 circuit voltage, current and time tuning parameters. 8.6 inconsistent with the normal use of other special requirements. Figure 1 by electricity, contact cabinet cabinet installation diagram Table 7 Common Code ABCD Remarks GCS-TG1010-4 1000 1000 850 956 Contact cabinet GCS-TG0810-4 800 1000 650 956 by the cabinet GCS-TG0808-4 800 800 650 756 by the power Cabinet GCS-TG0608-4 600 800 450 756 Figure 2 PC cabinet by cabinet cabinet installation diagram Table 8 Universal Code ABCDEF × G GCS-TG1010-2 1000 1000 850 956 60 400 × 400 GCS-TG0810-2 800 1000 650 956 160 200 × 400 GCS-TG1008-2 1000 800 850 756 60 400 × 400 GCS-TG0808-2 600 800 650 756 160 200 × 400 Figure 3 MCC cabinet cabinet installation diagram Table 9. General Code ABCDEF × G GCS-TG1006-1 1000 600 850 556 60 400 × 350 GCS-TG-0806-1 800 600 650 556 160 200 × 350