VPP Adjusting Wires

VPP Technical specifications 16-705.077-79

Adjusting wire with copper conductors with polythene insulation in a polyethylene shell is intended for connection of engines submersible into water, which work in artesian wells for a long time, to electrical networks for voltage rating up to 380V AC, frequency of 50 Hz.

Section, mm2
VPP	1,2	1,5	2,5	4,0	6,0	10,0	16,0	25,0	35,0	50,0	70,0

Structure

- A copper conductor corresponds to 2nd class in accordance with GOST 22483-77. Conductors with sections of 25, 35, 50, 70 mm2 are made of 19 wires.
- The insulation is polyethylene.
- The cover is polyethylene. Wires can be manufactured in a single-layer insulation-protective shell of light-proof polyethylene, at that the nominal width of the insulation-protective shell is equal to the sum of nominal widths of insulation and the shell.

Technical characteristics

- The climatic performance of wires is NF, categories of arrangement 1, 2 and 5 in accordance with GOST 15150-69
- Wires are resistant to the action of an ambient temperature from -40°Ñ to +80°Ñ
- Wires are resistant to the high operating pressure of 7.09x106 Pa
- Wires are to be mounted at a temperature not below -40°Ñ
- Wires stand the test of alternating current voltage with the frequency of 50 Hz during 5 minutes after soaking in water for 3 hours:

at acceptance and delivery:
wires for the voltage rating of 380 V - 2000 V
wires for the voltage rating of 660 V - 2500 V

during an operating period and a period of storage:
wires for the voltage rating of 380 V - 1000 V
wires for the voltage rating of 660 V - 1250 V
- The electrical resistance of wire insulation, measured after 3 h of soaking in water and recalculated for 1 km long and a temperature of 20°Ñ, is not less than:

at acceptance and delivery:
wires for the voltage rating of 380 V - 1000 MOhm
wires for the voltage rating of 660 V - 2500 MOhm

during an operating period and a period of storage:
wires for the voltage rating of 380 V - 100 MOhm
wires for the voltage rating of 660 V - 250 MOhm

- The average durability of wires:
at a temperature of 50°Ñ is not less than 32000 h
at a temperature of 65°Ñ is not less than 20000 h
at a temperature of 80°Ñ is not less than 16000 h

- A guaranty service life is 2.5 years since the date of putting into operation
- An average lifetime is 6 years.