Semi-hermetic compressor motor for ammonia service

A semi-hermetic compressor comprising:

• a compressor portion and a motor encased in a housing portion;
• the compressor portion configured to compress ammonia, and being driven by the motor;
• the motor comprising a plurality of individually insulated copper field wires;
• and a pass-through assembly for passing the individually insulated copper filed wires in electrical isolation from the motor through the semi-hermetic compressor housing portion to an external terminal.

A semi-hermetic compressor comprising;

• a compressor portion and a motor encased in a housing portion;
• the compressor portion configured to compress a working fluid of ammonia, and being driven by the motor;
• the motor comprising a rotor and a stator, the stator having a plurality of field windings, the each of the plurality of field windings comprising copper wires;
• the copper wires having wire insulation that prevents expose of the copper wires to ammonia and/or water;
• the copper wires extending in an interior of the housing portion from the stator of the motor and to an exterior of the housing portion through a pass-through connector mounted in the housing portion;
• the pass-through connector having a conduit that seals air passages around the copper wires and compresses the wire insulation of the copper wires to prevent leakage of the ammonia to an external atmosphere.

A semi-hermetic compressor comprising:

• a compressor portion and a motor encased in a housing portion;
• the compressor portion configured to compress a working fluid of ammonia, and being driven by the motor;
• the motor comprising a plurality of field windings;
• the plurality of field windings comprising insulated copper wires that form a stator of the motor and extend from the stator within an interior of the housing portion to an exterior of the housing portion through a pass-through assembly mounted in the housing portion;
• wherein the pass-through assembly compresses the insulated copper wires to form an ammonia tight seal around the insulated copper wires.

A semi-hermetic compressor comprising:

• a compressor portion and a motor encased in a housing portion;
• the compressor portion being driven by the motor and compressing a working fluid of ammonia that moves through the housing portion to cool the motor;
• the motor comprising a plurality of field windings;
• the plurality of field windings comprising copper wires that extend from the motor to an exterior of the housing portion through a connector mounted in the housing portion;
• the connector having a conduit that forms a seal around the copper wires, the copper wires having an insulation system that protects the copper wires from exposure to any ammonia, water, and/or mixtures of water and ammonia in the housing portion.