Product Overview
XGN66-12 box-type fixed AC metal enclosed switchgear (hereinafter referred to as switchgear) applicable to 3.6 ~ 12k V with two AC 50Hz system acceptance and distribution of electric energy as a device suitable for frequent operation place and equipped with oil switch the switchgear reconstruction purposes. The bus system as a single bus system and a single busbar system.
Switch cabinet meet GB3906 "3.6 ~ 40.5kV Metal Exchange closed the opening day and control equipment" and DL404 "Indoor AC High Voltage Switchgear order technical conditions" requirements, switchgear appearance, small size, has a complete and reliable to prevent misuse function. Switch cabinet equipped with a main switch or ZN28-12 VS1-12 type vacuum circuit breaker, isolating using GN30-12, GN19-10 isolating switch, earthing switch with JN15-12 grounding switch.
Model and meaning
Conditions of Use
◆ Ambient temperature: up to + 40 ℃, minimum -15 ℃;
◆ Altitude: not exceed 1000m;
◆ Relative humidity: daily average of not more than 95%, on average less than 90%;
◆ earthquake intensity is not more than 8;
◆ No fire, explosion, serious pollution, chemical corrosion and severe vibration.
The main technical parameters
Size and basic diagram of installation
◆ mounting base with reference to FIG. (2), the basis channel projecting ground 1-3mm, the roughness should not exceed 1.5mm per meter range, the entire length of not more than 5mm.
◆ The switchgear on the basis of the order placed, adjust the position of a good installation. Then fixed with M12 bolts or spot welding method between cabinet and cabinet with M8 bolts and tighten.
◆ open the cover after installing the main bus and a cable terminal contact surfaces should be clean and painted a neutral note Vaseline. Note that after installing a cable hole plugging good.
◆ Cabinet indirectly connected bus along the alignment direction of the switching cabinet fused, check whether there are any omissions ground check, whether continuous conduction ground loops, grounding resistance should be less than 1Ω.
◆ Installation of secondary cables, cable entry from the front counter at the bottom, along the side wall into the relay room, tap on the terminal block; installed after plugging the cable holes.
◆ clean up debris inside the dust.
Put into operation
Should carry out the following checks before commissioning and commissioning:
◆ models and specifications to check electrical components mounted cabinet according to the order requirements are consistent; check for loose fasteners; check once or twice a wiring is correct; operating disconnectors, grounding switches, circuit breakers, mechanical interlock 3 ~ 5, should be flexible cable wiring, interlocking meet the "five Anti" requirements, then the mechanical moving parts lubrication.
◆ according to instructions and insulation levels and loop resistance check switchgear factory test report, the mechanical properties of the circuit breaker, the test results should be consistent with the factory test report or similar.
◆ electrical parameters on the relay or computer monitoring and control device tuning.
◆ according to instructions stop transmission operation.
Maintenance and repair
Users should regularly switchgear maintenance and repair, which are:
◆ cleaning various parts of the dust, especially dust insulating member surface;
◆ Check the mechanical moving parts, regularly filling grease, so that it remains flexible and reliable;
◆ Check the electrical contact is good contact area, with or without overheating, ground loop is turned on;
◆ regularly check the fasteners are tightened; users should generally be carried out with the assistance of professionals troubleshooting, in the case of a little adjustment and glitches, users should overhaul their own; according to this specification and components of each of the main instructions.
Factory Data
Factory supplier should provide the following documents and accessories:
◆ invoice;
◆ product certification and factory test reports;
◆ Instructions;
◆ For electrical drawings;
◆ Main components specification;
◆ door keys, the operating handle and a single provision of spare parts contract.
Ordering Information
Order should provide the following technical information:
◆ Main Wiring number, use and single-line system diagram, rated voltage, rated current, rated short-circuit breaking current, power distribution room floor plan and switchgear arranged diagrams;
Requirements ◆ switchgear control, measurement and protection functions, and other requirements and schematics and automatic locking device;
◆ main electrical switchgear components models, specifications and quantity;
◆ If you need bus line counters or bridge connection between the switchgear, should provide the rated carrying capacity of the bridge bus, bus bridge span, the height from the ground, such as the specific requirements of the data;
◆ switchgear used when special environmental conditions, should be specified when ordering;
◆ other special requirements, in order to be a detailed written explanation before consultation. Order has been used as the contract becomes cabinet, follow the basic foundation making the drawings provided.
