Load Coils Load Coil Cases For
over 30 years, Charles (formerly Coil Sales) has pioneered load coil technology
to develop the highest performing, most reliable coils available anywhere. Our
very first product manufactured was the revolutionary single-entry load coil.
Today, our coils serve in the vast majority of RBOC, CLEC and IOC networks, helping
bring phone service to every corner of the globe.
Load Coils are furnished with a high permeability, nickel core made to our precise
specifications to guarantee lower DC resistance. Matched bifilar quadruple-insulated
windings ensure nearly perfect DC and inductive balance. Mechanical connectors
have replaced solder connections, acting as a heat sink and eliminating intermittency
in transmission due to cold solder joints. Charles Load Coils provide a non-expanding
encapsulant with the lowest viscosity available. This encapsulant ensures total
penetration, provides a superior pressure dam, and absorbs thermal shock.
Load Coils Work All subscribers and trunk cable facilities consist of resistance
and capacitance. The resistance is determined by the length and gauge of the cable
conductors. The capacity is determined by the length of the cable conductors and
the spacing between the conductors
capacitive effect of the cable conductors has a direct relation on the voice band
(300 Hz to 3000 Hz) from any given point. The higher the frequency, the greater
the loss or attenuation (3000 Hz would be attenuated more than 300 Hz). By adding
inductance (load coils) periodically into the cable facility, the capacitive effect
can be cancelled, thus causing the attenuation across the voice band to be equal.
Non-loaded subscriber loops should not exceed 18,000 ft. of cable. It is recommended
that loops longer than 18,000 ft. be conditioned with load coils.
loading can be achieved by selecting the desired loading coil, measured in millihenries
(mh), and placing them in the cable plant at prescribed intervals. For example,
an 88mh coil will cancel 6000 ft. of capacity. Therefore, the recommended spacing
would be at intervals of 6000 ft., with the first coil place 3,000 ft. from the
start of the cable run.
standardized Charles Load Coil is the mini H88 (88mh inductance, 1.3 diameter,
6,000 ft. spacing). Custom coils can be special ordered from Charles for inductances
not shown (i.e. 66mh, 44mh, 22mh, etc.) by contacting your Charles Sales Representative.
Physically, Charles Load Coils are available in two sizes, standard (1.72 inch
diameter) and mini (1.3 diameter)
Kase® Load Coil Cases Every modular component, load coil, build-out capacitor,
saturable inductor, etc., is exactly the same diameter: 1.3 inches. They are standardized
so that you can snap them into our midget B-152 Kwik Kase according to your needs
rather than having to order specially built combinations. Kwik Kases encapsulate
load coils within a tough ABS plastic shell, providing perfectly sealed protection.
They are then easily mountable to pedestal brackets and backboards for convenient
splicing access and quick installation.
Kwik Kase Load Coil Cases, you'll save not only time on deliveries and installations,
but also on overall costs too, because the modules can be returned to stock for
future use. With all these cost advantages, it's gratifying to know that the module
also improves electrical and physical properties. Kwik Kases can be special ordered
for non-standard sized load coils in addition to the standard mini H88 coil.
Coils and DSL Deployment Because load coils add inductance to the line, they
must ordinarily be removed in order to provision the line for deployment of DSL
services. Load coils act as low-pass filters; thereby preventing the use of higher
frequencies such as DSL signals.
offers an innovative solution to the challenge of load coils and DSL deployment.
For new installations, the Switchable Load Coil Case allows easy turn-up of copper
pairs from analog to digital service, and vice-versa. In situations where load
coils are already installed, the Digital Access Switch may be installed to easily
provision lines for DSL deployment with a simple turn of a switch. These solutions
reduce engineering and construction costs, service activation lead-times, multiple
dispatching and labor group conflicts.
Call (866) 342-3721 Or Click On The Chat Button At The Top Of The Page To Talk To One Of Our Representatives