February 8, 1918.

THE COLLIERY GUARDIAN.

[supplement PAGE IX.]

301

Our Manufactures
include :

Cables for Lighting, Power,
Telegraphy and Telephony.

H.C. Copper Wires & Strands.
Aluminium Wires & Sheets.

Phosphor Bronze Wires.

Enamelled and Cotton
Covered Wires.

Brass Rod.

Joint Boxes and Pillars.

Jointing Compounds.

Primary Batteries.

Exploders.

Shot Firing Cables.

Window Lead.

Cable Racks.

Static Condensers.

Pole Line Steel Work.

Paper Pinions.

Fuses and Fuse Wire.

Electric Welders.

Brass Forgings.

Telephone Cords.

Annealing Furnaces.
Tramway Insulation.
Overhead Equipment.

Electricity Meters.

Knife Switches.

To Colliery Engineers

And all whom it may concern.

Helsby Static Condensers

(Patents Nos. 22139105 and 14817114).

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A serious problem confronts the users of alternating current
for power purposes in the loss of plant efficiency due to the
low power factor consequent on the amount of inductive
machinery in circuit, which inevitably causes heavy losses
in the system, poor regulation, and undue limitation of the
output of generators.

The above illustration shows a 1,200 microfarad condenser
designed to improve the power factor of a 90 kw. load
from 0’5 to 0’9 on a 550 volt 50-period 3-phase circuit.

The dimensions of the condenser are 6 ft. 6 in. long by
4 ft. 10 in. high by 2 ft. in depth.

If, as is pretty certain, you' are working at a low power
factor, you can, by the use of this device, OBTAIN A
MUCH LARGER OUTPUT FROM YOUR PRESENT
GENERATORS.

•

We are not offering you perpetual motion or a panacea
for all the ills that human flesh is heir to, but a sound
engineering device based on well known electric principles.

SEE PAMPHLET H 75.

BRITISH INSULATED & HELSBY CABLES Ltd.,

Cable Makers and Engineers,

== HELSBY, Nr. WARRINGTON. .