ХЕМЗ

Protectors

гидрозащита

The motor protectors are designed for protection of internal cavities of electric motors from ingress of formation fluid and for compensation of consumption and temperature changes of oil volume.

The closed-type motor protector, where a diaphragm is used as a media separator in tight chambers, consists of one assembly unit called the “protector”.

Medium where motor protectors are to be used

Parameter Unit of measurement Value
Maximum ambient temperature °С 135
Maximum hydrostatic pressure in the neighborhood of protector kgf/сm2 400
Maximum mass concentration of solid particles (with relative hardness not more than 5 points by Mohs scale) g/l 1
Maximum concentration of hydrogen sulfide g/l 0,01

Note: On the Customer's request, special versions of protectors may be manufactured – protectors for maximum ambient temperature of 150°С, as well as corrosion-resistant protectors.

Types and technical characteristics of protectors

The standard types of protectors and their main technical parameters are pointed out in the table below.

On the Customer's request, the protectors may be manufactured in heat-resistant version and increased heat-resistant version.

Protector type Main characteristics Design features
Protector P5М5 Oil volume: 7.6 l.
Shaft diameter: 25 mm
Transmitted power: not more than 280 kW
at rotational speed of 3000 rpm (synchronous).
Outside diameter: 92 mm
Diaphragm P92D1-01-039: 2 pcs
Face seal UR25V5: 3 pcs
Protector P5М6 Oil volume: 6 l
Shaft diameter: 25 mm
Transmitted power: not more than 280 kW at
rotational speed of 3000 rpm (synchronous).
Outside diameter: 92 mm
Axial load from pump shaft: not more than 750 kg
Diaphragm P5DL-01-40-003: 1 pc
Face seal UR25V5: 3 pcs
Protector P5АМ5 ОOil volume: 8.5 l.
Shaft diameter: 35 mm
Transmitted power: not more than 350 kW at
rotational speed of 3000 rpm (synchronous).
Outside diameter: 103 mm
Diaphragm P92D1-01-039: 2 pcs
Face seal UR35V5: 3 pcs
Protector P6М2 Oil volume: 8.6 l
Shaft diameter: 35 mm
Transmitted power: not more than 350 kW at
rotational speed of 3000 rpm (synchronous).
Outside diameter: 103 mm
Diaphragm P92D1-01-039: 2 pcs
Face seal UR35V5: 3 pcs
Protector P6М5 Oil volume: 9.2 l
Shaft diameter: 35 mm
Transmitted power: not more than 770 kW at
rotational speed of 3000 rpm (synchronous).
Outside diameter: 114 mm
Diaphragm P114D1-01-040: 2 pcs
Face seal UR35V5: 3 pcs
Protector P6D2U114 Oil volume: 9.2 l
Shaft diameter: 35 mm
Transmitted power: not more than 770 kW at
rotational speed of 3000 rpm (synchronous).
Outside diameter: 114 mm
Axial load from pump shaft: not more than 1200 kg
Diaphragm P114D1-01-040: 2 pcs
Face seal UR35V5: 3 pcs