Danfoss VLT FC 103 Instruction Manual page 86

Specifications
Protection and Features
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Electronic thermal motor protection against overload.
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Temperature monitoring of the heatsink ensures that the adjustable frequency drive trips if the temperature
reaches 203° F ± 10° F [95°C±5°C]. An overload temperature cannot be reset until the temperature of the heatsink
is below 158° F ± 9° F [70°C±5°C] (Guideline - these temperatures may vary for different power sizes, enclosures,
etc.). The adjustable frequency drive has an auto derating function to avoid its heatsink reaching 203° F [95°C].
•
The adjustable frequency drive is protected against short-circuits on motor terminals U, V, W.
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If a line phase is missing, the adjustable frequency drive trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the adjustable frequency drive trips if the intermediate
circuit voltage is too low or too high.
•
The adjustable frequency drive is protected against ground faults on motor terminals U, V, W.
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VLT Refrigeration Drive Instruction Manual
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MG16J122 - VLT is a registered Danfoss trademark