Q:(E-5A-4) is an ideal protective material for the energy industry (nuclear power, petrochemical industry) emergency circuit, cable tray fire separation, and other electrical control systems. More

Is the accompanying cable, usually flat cable. The number of cores are generally more than 30 cores, responsible for the transmission elevator system communication, door lock security circuit, power, intercom, video surveillance and so on. Is to follow the car to go, the number of floors is relatively high, with the cable will be used in the steel core to improve durability.

Q:What is the meaning of the bridge and the non-perforated tray on the electrical drawings?

cable test: before making with 2500V megger measuring insulation resistance, generally should be greater than 5000MΩ

Q:Renovation project, the cable bridge to pass through the fire shutter doors, but the actual situation at the top of the door beam can not open the hole, next to the bypass construction is very difficult, whether it can be in the rolling door below the ground to add a firewall, the equivalent of raising the fire shutter Floor. Then the bridge is laid along the ground through the newly added firewall. Is there any relevant specification for reference? More

In this short few minutes, the staff to escape, and sometimes smoke, can not see the ground, hit the fire shutter door under the threshold or slope, will such a situation happen? Delayed the escape time, there may be a fire shutter door again down and sealed in the fire scene The consequences to find you

Q:What is the meaning of the separation within the cable tray?

Wire generally refers to the outdoor overhead lines, there are high pressure, high pressure, low pressure of the points, but also by insulation, or conductor material points, of course, the second part of the indoor line, such as BV line, there are general The rod will be used on the ground BV line, as well as the ignition point on the high pressure cited off the line, high-voltage jumpers and so on this part of the wire, the general outdoor overhead line on the set of overhead line fixed, by cross-sectional area, Part of the line with the general sleeve cabinet wiring or BV line laying power cable with high and low voltage and control, signal, etc

Q:How to practice climbing and how to climb the bridge

Information outlet with wall type, ground type, sitting on a variety of types

Q:Cable tray elbow to know the angle and the width and height of the bridge how to calculate the problem of cutting more

ZR is the meaning of flame retardant, flame retardant A, B, C three, ZB on behalf of B-class flame retardant, ZR default C-class flame retardant. Flame retardant properties ZA & gt; ZB & gt; ZC. Flame retardants are currently organic and inorganic, halogen and non-halogen. Organic is based on bromine, nitrogen and red phosphorus and compounds as the representative of some of the flame retardant, inorganic mainly antimony trioxide, magnesium hydroxide, aluminum hydroxide, silicon and other flame retardant system. In general, organic flame retardant has a good affinity in the plastic, brominated flame retardants in the organic flame retardant system occupies an absolute advantage, although the environmental issues on the "criticism" but has been difficult to have other flame retardant system to replace.

Q:How does the drawing of the cableboard of the design institute draw

First look at the skin, good general fold many times constantly, then look at the copper wire thickness, the same specifications of the wire, the more thick copper wire the better

Q:Do you want to make a cross-sectional area of the jumper? What is the minimum cross-sectional area of square mm?

The second I would like to ask you this 1 to 8 of the splitter is which level

Q:Always confused the bridge has been linked with copper mesh with a why even laying a galvanized flat iron. More

Repair computer accessories (motherboard) is basically to return to the factory (in addition to the memory is a direct change for the new to you), and now what the boss so much repair their own repair ah -.- burned more serious? At least tell you about what is burning it. There is no burning is not serious argument, only to repair and can not repair these two cases. As for the will not be changed things, unless you have seen, according to phase, or really no way.

Q:How does the bridge cover set the budget

Demolition plate before we do to the construction team, do have the construction team with us to calculate the money. Usually by a total of 1 yuan / m to the disassembly. Well, this life is a worthless job. There is no such quota. Fixed demolition refers to the removal of the entire trunking, so can not use the demolition quota to set the price.