104X905BA603 G-95-149-H-9550 General Electric Module

104X905BA603 G-95-149-H-9550 General Electric Module

SystemFeatures

The 9550 Line Trap features low loss and modular design. PLC is able to design line traps according to customer requirements given the various application parameters such as outline dimensions and short time current per IEC Series 2 standards. The PLC 9550 Line Trap is inserted in series with high voltage A.C. power transmission lines to prevent loss of carrier-frequency signal power in the range of 30 to 500 kHz. It also minimizes interference from carrier signaling systems on adjacent power transmission lines.

PLC 9550 Service Conditions 

• Operating Environment: Outdoors 

• Ambient Temperature Range: -40 C to +45 C 

• Altitude: Not greater than 1000m 

• Power Frequency: 50/60Hz 

• Atmospheric Condition: No damaging gas or dust. 

• Abnormal Condition: Outside listed temperature range, salt, spray, industrial pollution, or other environmental factors that could seriously affect the operating conditions should be submitted to PLC for review.

The PLC 9550 Line Trap consists of 3 parts: The Main Coil, The Tuning Device & The Protective Device.

MAIN COIL 

The main coil carries power frequency currents as well as short-circuit currents of the power system. The main coils are made of several layers of insulated rectangular aluminum cable and epoxy resin fiberglass, which results in a very strong structure. This manufacturing method also proves effective against ultraviolet rays and aging. The main coils’ spiders, made of flat aluminum alloy connected by fiberglass ties, yield traps that provide high mechanical strength, corrosion-resistance and low loss. 

TUNING DEVICE 

The tuning device generally consists of a capacitor, inductor and a resistor. The tuning device combined with the main coil forms a resonant circuit to block carrier signals. High voltage polystyrene film capacitors are used to provide a line trap insulation margin that is much higher than that required by IEC 353. 

PROTECTIVE DEVICE 

The protective device is used to protect the main coil and the tuning device. It can limit lightning and switching over-voltages applied across line traps to a certain extent. Depending on the voltage across the main coil, lightning arrestors or zinc-oxide valve disks are used, which are specially designed for the PLC 9550 Line Trap. 

MOUNTING OPTIONS 

Suspension-Mounted Line Traps: These are provided with one, two, or four suspension points and eyenuts, which must be turned tightly during assembly to mount the line trap in a vertical state. Pedestal-Mounted Line Traps: Aluminum pedestal(s) should be mounted to the lower spider first, then connected to the post insulator. For large line traps with three or four supports, every support

Symbols (for Tables 1 & 2) susp. = Suspension type ped. = Pedestal type Ltn = Rated inductance In = Rated continuous current Ikn/T = Rated short-time current, r.m.s./Duration Ikp = Asymmetrical peak of Ikn Loss = 75 C power loss H = Height of line trap W = Weight of line trap y = Outer diameter including anti-corona ball or anti-corona ring a = Central distance between lifting holes b = Central diameter of pedestal brace flange Please Note: Corona balls are not required on line traps with rated continuous current below 800A, and therefore are not supplied. For heavier traps, we do not use suspension mounting in general, therefore there is no suspension mounting drawing is provided in the catalog tables. Non-standard trap characteristics can be supplied upon request.