VLT 3522
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The VLT 3522 variable speed drive offers an output current of 37.9A, a typical shaft output of 20 HP, an efficiency of 96% at full load, and supports up to 1000 ft unshielded motor cable length. Part of the VLT 3000 Variable Speed Drives by Danfoss, it operates on a 3-phase supply voltage of 440/460/500 V.
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Product Description:
The Danfoss VLT 3522 acts as one strong variable speed drive. The drive has a high efficiency of 96% at full load, which makes it great for operations that care about energy. It can generate 37.9A of current and 20 HP of shaft power. It can work with a three-phase supply voltage of 440/460/500 V, which means it can work with a lot of different power systems throughout the world.
The VLT 3522 can also handle unshielded motor wire lengths of up to 1000 feet, which gives users a lot of freedom in how they set it up. When installing and maintaining the VLT 3522, safety is the most important thing. Only trained electricians should undertake electrical installation and maintenance. Following the instructions and all relevant local and national safety rules is necessary to avoid equipment failure, injury, or death. When configuring or using the drive, it might start the linked motor without notice. It is vital to remember, nevertheless, that the STOP key does not cut off AC power.
Before any maintenance can be done, the power must be verified as unplugged and the correct lockout/tagout procedures must be followed. UL/cUL-listed versions include an Electronic Thermal Relay (ETR) built in that protects single-motor applications against Class 20 motor overload. To do this, parameter 315 must be set to "TRIP" and parameter 107 must match the motor's rated current. The VLT 3522 uses forced air circulation for thermal management. It has a door fan and back heatsink fan(s) to cool the parts within. To meet all of the criteria for ratings and standards, there must be enough space surrounding the drive for air to circulate.
Frequently Asked Questions about VLT 3522:
Q: What is the typical shaft output for the VLT 3522 drive?
A: The typical shaft output is 20 HP, suitable for medium-sized industrial motors.
Q: What are the output current ratings for continuous and short-term operation?
A: The drive provides a continuous output current of 37.9 A and a short-term (60 seconds) output current of 45.8 A.
Q: What is the maximum output power (apparent power) of this drive?
A: The output apparent power (Svlt, N) is 24.2 kVA.
Q: What is the maximum motor cable cross-section that the VLT 3522 supports?
A: It supports a maximum cable cross-section of 6 AWG.
Q: How long can the motor cable be when using the VLT 3522 drive?
A: The maximum motor cable length supported is 1000 feet (unshielded).
