Novel control cabinet of beam-pumping unit
A new control cabinet of oil-pump is consisted of a rectangular housing, a motor protector, an air switch, an alternating-current contact and an audio warning device. The housing is provided with a front door and a rear door. In the middle and the upper section on both sides of the front door at the...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A new control cabinet of oil-pump is consisted of a rectangular housing, a motor protector, an air switch, an alternating-current contact and an audio warning device. The housing is provided with a front door and a rear door. In the middle and the upper section on both sides of the front door at the front side is provided with a plate hole of the motor protector and a plate hole of the air switch, while the back of the front door is provided with a motor protector and an air switch. The front door is enclosed by an insultative panel at the front side to get the panel of the motor protector and the air switch showed with the front side hidden and fixed by a burglarproof screw. The back of the rear door is equipped with a tab terminal and the alternating-current contact; the bottom of the housing is equipped with a wire-connector hole and a hole of a lead-out wire with the lead-in wire and the lead-out wire enclosed by an insultative cover; the front side of the rear door is enclosed by an insultative panel and is hidden and fixed by a burglarproof screw from the back side, and on the lead-in and the lead-out wires are equipped with special safety shields. |
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