... volume, reasonable construction, less material, excellent workmanship, high efficiency, low starting current, high load moment of inertia (permissible of a moment of ... YGF 1000 - 4 is of enclosed squirrel cage type with air - water cooler, protection degree of IP44 in nermal, ... elements, PT100. The stator flame is provided with air inlet and air outlet thermometers so as to ensure a reliable operation ...