I don't know how large your refrigerator is but even in the early 70's an 18 cu ft refrigerator compressor only drew 500 to 600 watts. My 25 cubic foot bottom freezer which is 5 years old has a compressor that draws 100 to150 watts. the new compressors have run capacitors for power factor correction. Kitchenaid has a refrigerator that has its own inverter/speed controller and a three phase variable speed compressor. What you are seeing is about right.