1.1 the rated temperature: -5~+40 ℃
Relative humidity: 1.2 ≤ 90% (relative humidity is 90%, the environment temperature is not lower than 25 ℃, equipment without condensation and ice formation)
1.3 temperature maximum change: 15K
1.4 earthquake conditions: horizontal acceleration (ground) 0.25s
Vertical acceleration (ground) 0.125g
Safety factor greater than 1.67
1.5 meters above sea level: 1000M
1.6 vibration: severity level device can withstand the provisions in article 16.3 of the GB7261 for the vibration endurance test grade I, after the test no fasteners loose and structural damage.
1.7 indoor vertical installation. The screen surface inclination of not more than 5.
1.8 storage, transport limit temperature: in accordance with GB / T15145-94 34 provisions
2, general requirements
NDGJ8-89 thermal power plant, substation two wiring design specification
GB 11920-89 electrical part of power plant centralized general technical conditions of control device
3, technical characteristics
The 3.1 element connection box
Screen all elements with product certificate or proof of quality documents, issued production certificate element, provide proof or mark the corresponding, don't use obsolete, backward and high energy consumption of components.
The 3.2 insulation
In accordance with the GB / T 15145-94 3.10 the provisions of article 3.11, H
3.3 screen technology
The 3.3.1 panel includes all the installation of equipment or a single component in the above have sufficient mechanical strength and correct installation, ensure the screen in the lift, transport, storage and will not damage the installation process. Meet the DL / T720 power system general technical conditions of relay cabinet, screen, also provides the transportation, storage and installation instructions for the buyer to use.
Our company the validity of internal wiring cabinet panel responsible for. In the specified environment conditions, characteristics and functions of the supply of equipment shall be fully meet the requirements of technical specification,
The mechanical structure of 3.3.2 screen can defense:
Dust
Wet
Salt contamination
Insect and animal
Under the high temperature and low temperature
Vibration screen cabinet bracket
3.3.3 for ease of operation and repair, the use of standard components and assemblies.
3.3.4 screen before the cabinet, a door, a window on the front door, the door in the opening and closing, unit to work normally, ensure the accuracy of measuring and recording. Screen cabinet before, the back door is embedded, the cabinet door thickness including thickness, 500mm, single door, the front door to door, at the left (right) hand side (to face the cabinet front shall prevail): back door to door, highly including nameplate height cabinet (60mm) altogether 2260mm. The width of the cabinet cabinet 800mmcf top 2200mm located above the single busbar frame (with 8 small bus), the screen body before and after the installation disk eyebrow and convenient disassembly,
Both sides of the 3.3.5 cabinet bottom with mounting holes, no less than as shown on the right of the protective screen of equipment shall be embedded, semi embedded installation, wiring, and behind the protective screen should have appropriate lighting.
3.3.6 cabinet and the equipment can be used in earthquake area,
Steel grounding bus 3.3.7 screen cabinet with a 100mm section, earthing bus terminal is equipped with reliable pressure connected terminal, in order to receive power station grounding net.
All the cabinet of the grounding and grounding busbar connected by at least two screws, in addition, grounding bus every 10cm has a 5mm diameter hole.
3.3.8 cabinet internal wiring using heat-resistant, resistant to moisture and flame retardant has sufficient strength of the insulated wire;
3.3.9 screen inside and outside must be clean, remove the interior of all debris and inside and outside all stains.
3.3.10 my company shall ensure the cabinet and painted surfaces in the transport, storage and anti-corrosion performance during normal operation.
Device 3.3.11 cabinets and each has a label box, in order to clearly identify, shell of mobile equipment, equipment in the body also has the same identification markers.
Between 3.3.12 screen cabinet between the device and the screen terminal stroke turtle device and connection with clear identification.
3.3.13 cabinet outer dimensions of 2260 (2360) X800X600mmt:
Cabinet: the user specified color
3.4 equipment and materials shall be identified by the state qualified products.
3.5 according to the design institute drawings production, and meet the safe and reliable operation, convenient maintenance, debugging wiring economic and reasonable structure, beautiful and practical requirements.
