Termination, of cables

A 16.6 Skin and proximity effects in a multicore cable 16/547 A 16.7 Short-time rating of cables 16/547 A 16.8 Termination of cables 16/548... 

Slotted beam or U-contacts describe a versatile design for the termination of soHd wire and require that the wire be pushed into a narrow slot between two moderately rigid tines, or beams, at the back end of the separable contact (Fig. 8). The edges of the beams displace the insulation, squee2e the wire, and keep it in compression for the life of the connection. This termination method was developed for terminating conductors in a gang using flexible flat cables with round conductors (5). 

Figure 10.4 Connection of cables in motor terminal box through cable lugs...

Avoid soldering of cable and wire terminal joinis at such installations, which may loosen with temperature and time. 

This plays an important role and requires utmost care. While termination of LT PVC cables is easier with the help of a crimping tool, HT cables need a proper kit for jointing and end termination. The jointing material is also manufactured by the cable manufacturers. We are not providing details of these kits and their jointing procedures. These can be obtained from manufacturers catalogues. 

Check all wiring and electrical controls, for correct circuitry, security of terminals, continuity, insulation, compliance with safety regulations such as lEE, marking of terminals and cables, etc. Check action of all controls as far as may be possible without running any item [63]. 

Cu is the metal constituting the cables connecting the terminals of the cell to the measuring instrument. The work to bring an electron from M to R is equal to eAE along the external circuit and includes the contributions of the two electrodes [Eq. (13)] which, however, cannot be measured separately if only cell (a) is used. 

LASL, Los Alamos, NM. The transducer described in his paper and shown in Fig 31 was in the form of an uncharged parallel-plate capacitor which had an explosive as a dielectric. One plate was connected to the signal input terminal of an oscilloscope, while the other plate was grounded and acted as part of the attenuator in the boosting system. When the shock wave in the grounded attenuator plate hir the explosive, a voltage appeared across the capacitor and a pulse appeared on the oscilloscope. Two oscilloscopes were used to record the waveform of the current in the transducer circuit which consisted of a small capacitance shunted by the small resistance of the signal cable. 

The current is carried to the electrolyzer by copper or alluminium busbars from which it is distributed by cables or by a system of elastic copper lamellae to the terminals of the electrodes. The current passes through many points of contact which determine the magnitude of so called contact resistance. The more imperfect are the contacts at these points the greater the losses in electrical... 

The General requirements cover apparatus grouping and temperature classification, constructional requirements for enclosures and fasteners, connection facilities and terminal compartments, cable entries and supplementary requirements for rotating electrical machines, switchgear, plugs and sockets and luminaires. A third part of the standards cover type verifications and tests as well as marking requirements. 

With the exception of terminal compartments in e or d or within an enclosure in case of direct cable entries into d or p, such an IT system shows totally screened phase conductors which are not subject to an immediate short-circuit condition in case of cable damage or an internal insulation fault. Even in the earth fault condition the network may remain operational. And this is the great advantage of these systems compared with, e.g., a TN system... 

The terminals of the cables are designed to connect and disconnect conveniently with other optical connectors. The power loss due to connection is approximately 1 dB and the total loss at the 488-nm excitation wavelength of the Ar-ion laser is estimated at about 30 dB/km. 

We ll discuss termination and cabling together because they are very closely tied together. There are two types of cabling ... 

Because there are two types of cabling devices, you have three ways of connecting them. The methods differ by where the devices are located and whether or not the adapter has the terminator installed. The guide to remember here is that both ends of the bus must be terminated ... 

This approach is dedicated to the measurement of hquid viscosity by determining the real part of the sensor admittance at series resonance frequency. According to this concept, one terminal of the sensor is fed with the (constant-level) output of a VCO. The resonator current I is measured by connecting a transimpedance amphfier at the second terminal. Due to the low input impedance of the transimpedance amphfier, the entire VCO output voltage is apphed to the sensor. Parasitic capacitances from the sensor terminals to ground (e.g., due the shielding of the connection cables) are on one side... 

The two electrodes attached to the sample were connected to a coaxial terminal of BNC type. The wires and the cable had to be kept short to reduce the capacitive load on the sample. This capacitive loading... 

A major part of any power system installation is the termination of all the cables. Cables are terminated at equipment by the use of cable glands. There are many different types of cable glands, and they must be carefully chosen to suit their function and enviromnent. Factors influencing their choice are -... 

Application of a three-phase short circuit to the terminals of an unloaded induction motor is not a practical factory test, especially for a large high-voltage motor, because the motor can only be excited at its stator windings from the power supply. A three-phase short circuit at or near the stator terminals can occur in practice e.g. damaged supply cable, damage in the cable terminal box. The parameters of the stator and rotor windings can be obtained from other factory tests. However, the derived reactance can be defined in the same manner as those for the synchronous machine, but with... 

I drilled several holes in its side and bolted down the shunt block inside. I then cut and stripped both of the power cables and secured them to the breaker and common junction inside the box. Since the dc breaker for the PV (solar-electric) modules was adjacent to the one for the hydro unit, I brought their combined output out with a short piece of big cable to which I crimped and soldered a big lug and secured it under the big hex bolt of the shunt. I crimped and soldered a lug to the wire that originally came from the B+ terminal of the battery pack and secured it to the other side of the shunt. The shunt was now inline between both the PV panels and hydro unit and the battery pack. 

All physical cables and ancillary nonelectronic hardware involved in carrying network data, up to and including terminators. It includes physical switches, cable patch panels, cable and all items used in the routing of cables. 

The dielectric material in the form of a flat circular disc of thickness d, is placed between the electrodes to form a parallel-plate capacitor of plate area A. The upper or high electrode (H) is directly connected to the high-voltage terminal of the measuring unit, whereas the lower electrode (L) is similarly connected to the low-voltage terminal. These two terminals are Isolated from the metal screen of the BNC-type connector and cables. The third or guard electrode (C) is held at the same potential as the lower electrode, but is isolated from it by a Teflon guard. The... 

The Ionization chamber 18 is connected electrically to the exterior by a shielded coaxial cable 20. The shield of the coaxial cable 20 is connected to one electrode of the ionization chamber 18 and is externally connected to an electromagnetic shield 22, at ground potential, containing 20 the remainder of the measuring equipment. The other electrode of the ionization chamber 18 is connected to a condenser 24, a galvanometer 26, and a power supply 28, all in series. One terminal of the power supply 28 is... 

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