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COSCO utilizes
power cable from a number of vendors to provide its customers with the
most reliable and economical system.
A wide range
of cable sizes and construction types are available. Selection of the
cable is based on an analysis of a number of factors including well
conditions, available space and motor size as follows:
- Conductor size based on
motor current load
- Insulation voltage
rating based on motor voltage
- Choice of flat or round
cable based on available annular space
- Well bore temperature
- Amount of gas present
- Corrosiveness of well
fluids
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As a general
rule, round cable is preferable to flat cable, due to undesirable current
imbalances that
are an inherent characteristic of flat cable. However, annular space
restrictions, high gas, or temperature conditions requiring lead sheath
insulation protection, often dictate that flat cables must be used.
Cable
Type |
KV
Rating |
Conductor
Sizes
(AWG) |
Maximum
Operating
Temperature |
Insulation
Material |
Jacket
Material |
Configurations
Available |
| PPNP |
3 KV
5 KV |
1, 2, 4, 6 |
205 deg. F
96 deg. C |
Polypropylene |
Nitrile
Rubber |
Round
Flat |
| EPNP |
4 KV |
1, 2, 4, 6 |
270 deg. F
130 deg. C |
EPDM |
Nitrile
Rubber |
Round
Flat |
| EPEP |
5 KV |
1, 2, 4, 6 |
400 deg. F
204 deg. C |
EPDM |
EPDM |
Round
Flat |
| EPOP |
4 KV
5 KV |
1, 2, 4, 6
16 mm2 |
450 deg. F
232 deg. C |
EPDM |
Braid over Lead |
Flat |
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