A wave trap or line trap is a device that is used to block communication signals from passing through it and only allows power signals to pass through it. The wave trap acts as a filtering cum protective device that filters the high-frequency signals to low-frequency signal and give protection against surge voltage.
Coupling capacitor with capacitive reactance offers low impedance to the high-frequency signals, and high impedance to the low-frequency signals. Hence high-frequency carrier signals get blocked by Line Trap, and travel through a coupling capacitor. And low-frequency power signals pass through Line Trap and get blocked by the coupling capacitor.
And coupling capacitor is the connecting link between the power transmission line and the terminal assembly of the carrier signal panel, which is connected to the power transmission line before the Line Trap. Line Trap is nothing but an inductive coil with inductive reactance. And inductive reactance XL=2 π fL.
Let’s see. Line Traps are connected in series with the power transmission line. And coupling capacitor is the connecting link between the power transmission line and the terminal assembly of the carrier signal panel, which is connected to the power transmission line before the Line Trap.
The substation over 66kv uses a wave trap to filter "carrier communication frequency". We can use a line trap or wave trap along with the electrical equipment CVT (Capacitive voltage transfo rmer. The circuit diagram of Wavetrap is the symbol of the wave trap. In fact, the circuit diagram is a parallel resonance circuit.
The GIF below shows how the carrier frequency is contained using the wave traps. The frequency that travels on the line is chosen from a range of 30kHz to 500kHz. So, while the trap is tuned to block this frequency, it allows the 60hz power frequency through. Wave traps restricts the carrier frequency to the line it is meant to travel in.
The industries normally make lifting eyes in the steel material. The horizontal and vertical mounting is normally done with the help of a mounting pedestal which is attached at the bottom of the wave trap. They design the mounting pedestal for the wave trap to fit above the CVT (capacitive voltage transformer).
A wave trap or line trap is a device that is used to block communication signals from passing through it and only allows power signals to pass through it. The wave trap acts as a filtering cum protective device that filters the high-frequency signals to low-frequency signal and give protection against surge voltage.
Arrester Rating kV rms Arrester MCOV kV rms Capacitor Microfarads per Pole µF Dimension "D" (side view in inches)1 Weight in lbs. 2400 38F2401 — 3 2.55 0.5 23 300 4160 38F2402 — 6 5.1 0.5 23 300 — — 38F2403 3 2.55 0.5 23 300 4800 38F2404 — 6 5.1 0.5 23 300 6900 38F2405 — 9 7.65 0.5 23 300 7200 38F2406 — 9 7.65 0.5 23 300 13200 38F2407 — 18 15.3 0.25 23 300 …
Coupling capacitor with capacitive reactance offers low impedance to the high-frequency signals, and high impedance to the low-frequency signals. Hence high-frequency carrier signals get blocked by Line Trap, and travel through a …
Coupling capacitor with capacitive reactance offers low impedance to the high-frequency signals, and high impedance to the low-frequency signals. Hence high-frequency carrier signals get blocked by Line Trap, and travel through a coupling capacitor. And low-frequency power signals pass through Line Trap and get blocked by the coupling capacitor ...
The report provides an introduction to PLCC, describes the key indoor and outdoor equipment used in a PLCC system such as line traps, coupling capacitors, wave traps and carrier terminals. It also discusses …
A line trap, also known as wave trap, or high-frequency stopper, is a maintenance-free parallel resonant circuit, mounted inline on high-voltage (HV) AC transmission power lines to prevent …
arrester, metal oxide varistor (MOV), should be introduced to handle these surges. This paper shows the selection of arresters laying more emphases on the arresters for residential areas. In addition, application and installation of the arrester will be determined by the selected arrester. Thus, reduces the risk of damage, which the protection measures can be characterized, by the …
The wave trap is suitably designed to divert the high-frequency communication signal to the PLCC (power line carrier communication) panel with the help of a Capacitor-Voltage Transformer (CVT). Major components of wave trap or Line Trap
This paper presents a particular analysis of the consistency in surge test between using gas arrestors and capacitors. The IEC has strict definitions of the parameters of the test waveform. To compare the waveforms and their parameters in the two coupling modes, high voltage probe and oscilloscope were used to measure the open circuit voltage waveform …
A wave trap, also known as line trap, is a band-stop or notch filter. It blocks the high-frequency carrier signal and allows 60hz power frequency. A wave trap, CCVT, line tuner, and carrier relays – work hand-in-hand …
Line tuner of the wave trap connected series to the coupling capacitor. They produce a high impedance for low frequency. Obviously, it opposes the flow of power line frequency, into the PLCC room or panel. …
In this work, an accurate coupling capacitor voltage transformer (CCVT) model for electromagnetic transient studies is presented. The model takes into account linear and nonlinear elements.
In this Video, function of Line/Wave Trap & Coupling Capacitor (CC) is explained in detail with example. Wave trap in Substation.1. PLCC, that is power line ...
• coupling/blocking equipment such as coupling capacitors, line tuners (coupling devices) and Line Traps. Line Traps are connected in series with HV transmission lines. The main function of the Line Trap is to present a high impedance at the carrier frequency band while introducing negligible impedance at the power frequency. The high
The report provides an introduction to PLCC, describes the key indoor and outdoor equipment used in a PLCC system such as line traps, coupling capacitors, wave traps and carrier terminals. It also discusses different modes of coupling carrier signals to power lines, and the functions of essential components like the coupling ...
A wave trap or line trap is a device that is used to block communication signals from passing through it and only allows power signals to pass through it. The wave trap acts as a filtering cum protective device that filters the high …
Coupling Capacitor: A coupling capacitor is used to receive a high-frequency communication signal. As the capacitor principle of capacitor creates low impedance for a high-frequency signal.
What is coupling device? The coupling devices shall be interposed between the capacitor voltage transformer and coaxial line to the PLC transmitter/receiver. The coupling …
A wave trap, also known as line trap, is a band-stop or notch filter. It blocks the high-frequency carrier signal and allows 60hz power frequency. A wave trap, CCVT, line tuner, and carrier relays – work hand-in-hand implementing Power Line Carrier pilot protection.
LMU in combination with the coupling capacitor (Capacitive Voltage Transformer) is primarily, a bandpass filter with a frequency bandwidth of 40-500 kHz and Coupling Capacitor value from 4400pF to 12000pF. The working mechanism of the line tuning unit is shown in the attached line diagram of a typical phase-to-phase PLCC link the line tuning unit is connected between the …
What is coupling device? The coupling devices shall be interposed between the capacitor voltage transformer and coaxial line to the PLC transmitter/receiver. The coupling device, in conjunction with the capacitor voltage transformer, shall ensure efficient transmission of carrier frequency signals between the carrier frequency ...
• coupling/blocking equipment such as coupling capacitors, line tuners (coupling devices) and Line Traps. Line Traps are connected in series with HV transmission lines. The main function …
A line trap, also known as wave trap, or high-frequency stopper, is a maintenance-free parallel resonant circuit, mounted inline on high-voltage (HV) AC transmission power lines to prevent the transmission of high frequency (40 kHz to 1000 kHz) carrier signals of power line communication to unwanted destinations. Line traps are ...
[Circuit Breaker, Instrument Transformers (CT/PT/CVT), Wave Trap, Isolator, Surge Arrester, Coupling Capacitor, Cable] i. Name of Substation : ii. Utility : iii. Faulty Equipment and the associated feeder : iv. Rating (Voltage/ current/ current ratio/ capacitance/ MCOV etc., as applicable) : v. Short circuit withstand current and duration :
Ferro-resonance phenomenon (FP) in coupling capacitor voltage transformer (CCVT) profoundly deforms the voltage waveform. Transient over-voltage due to transmission line switching, particularly in ...
Coupling Capacitor Voltage Transformer: Laboratory Tests and Digital Simulations D. Fernandes Jr., W. L. A. Neves, Member, IEEE, J. C. A. Vasconcelos, M. V. Godoy Abstract-- In this work, laboratory tests of ferroresonance and circuit breaker switching were carried out for a 230 kV coupling capacitor voltage transformer (CCVT). The magnetic core and surge arrester …
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