Essential Safety System Electronic Accounting-typeC

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Conductor’s construction and D.C.resistance should be in accordance with Table 3.

Nom. wall thickness of insulation should be in accordance with Table 3.Thethinnest part should be no less than
90%-0.1mm of nom. Value.Insulation resistance of wire should in accordance with Table 4.

A pair should be made up of two insulated wires of different colors.

Flame retardant cable should conform to GB / T 19666-2005 standards.

Finished cable can withstand 50Hz.2000V in 5min when tested by voltage with-standing test.

The length that is allowed to be in delivery should be no less than 50m.Should buyers and sellers agree,any length can
be delivered.The toleranc of length should be no more than 0.5%.

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Q:The wall was sideways opened a trough how to do ah?
PVC pipe. Iron pipe, trunking, bridge, hose, and so on. The The PVC pipe, trunking generally the most common, used in the kind of request is not very strict, not much bit line. Capital is not high, low cost, iron pipe bridge is mainly used in fire strict buildings, shopping malls, high cost, security, line points and more use of bridge hose used in the line out of the floor to the desktop section. Nice point of the ceiling. Overhead floor, are suitable for placement is not comprehensive, personal experience
Q:110 voice patch panel directly to the telephone line can be connected to it
sure. Take the ground pipe is to be from the floor under the brick. But the late completion of the drawing to be accurate, so that the next time to repair the line can not find the location. Want to answer to help you.
Q:Power cable ZRYJV-4x70 + 1x35 What does it mean?
51 laying of cables 511 cable laying should meet the following requirements: 1 cable type, specifications should be consistent with the design requirements
Q:Why does the AC welding machine burn out the equipment?
The main role is to protect, the secondary role is insulation, there is a role is to decorate.
Q:The TV shows no signal. The What is the reason for this?
We usually say how many square millimeters (wire) refers to the cross-sectional area of the wire core, that is, according to the diameter of the core calculated cross-sectional area. The larger the cross-sectional area of the wire, the greater the capacity of the power transmission.
Q:PVC pipe on the GV.215-16 (C) What does it mean
TC line laying is the use of wire steel pipe laying. Wire steel pipe is a thin-walled tube, the nominal diameter is the outer diameter of the pipe. SC line laying is the use of ordinary welded steel pipe laying. Ordinary welded steel pipe is thick-walled tube, nominal diameter is tube diameter.
Q:Brief description of the difference between cable and cable.
Optical fiber (optical fiber) is designed to meet the optical, mechanical or environmental performance specifications, it is used in the jacketed jacket in one or more optical fiber as a transmission medium and can be used alone or in groups of communication cable Component. Fiber optic cable is mainly composed of optical fiber (such as the hair of the glass) and plastic protective casing and plastic skin, the cable without gold, silver, copper and aluminum and other metals, generally no recovery value. Fiber optic cable is a certain number of optical fiber in accordance with a certain way to form a cable core, outsourcing jacket, and some also cover the outer cover, used to achieve optical signal transmission of a communication line. That is, a fiber formed by a certain process by an optical fiber (optical transmission carrier). The basic structure of the cable is generally composed of cable core, reinforced steel wire, filler and jacket and other parts, and also need to have waterproof layer, buffer layer, insulated metal wire and other components. A cable is usually a rope of similar rope made of several or several sets of wires (at least two in each group), each of which is insulated from each other and often twisted around a center with a height Insulated cover. Cable with internal power, external insulation characteristics. Category cables are power cables, control cables, compensating cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum cables and so on. They are composed of single or multi-strand wire and insulation layer, used to connect the circuit, electrical appliances and so on.
Q:Power cable yjv22-10kv-3 * 50 what it means
This model is called copper core XLPE insulated PVC sheathed steel tape armored 3 core, each core conductor size 50mm. the cable voltage is 10KV cable. YJ: cross-linked polyethylene, cable insulation material for the chemical cross-linked polyethylene V: PVC, cable inner jacket material for the PVC jacket material first 2: plating Zinc steel strip, cable armor layer material for the galvanized steel strip Second 2: PVC, cable outer jacket material for the PVC sheathed material 10KV: that the use of the voltage of the cable waiting for you 10 kV 3 * 50 : That the cable is 3 core, each core conductor section 50mm2
Q:What are the lines that need to be set up for notebooks?
Friends, shielded cable is a layer of mesh copper or metal wire woven from one or more wires surrounded by a cable, this layer of mesh to prevent lightning, the outside signal can not interfere with it, and control cable is used To control the device to start the protection circuit, etc., in general occasions do not need to shield, with the general insulated wire on it, as long as the load on the line.
Q:What is the role of patch panels generally, why should the switch connected?
Customers want what you should have, others do not you should have. Shop to people-oriented.

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