175H1250
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The Danfoss 175H1250 is a part of the VLT 3000 Variable Speed Drives series, categorized as an AC Drive. It is fan-cooled, panel-mounted, and operates on a 3-phase system with an input voltage of 380-415V AC. The drive delivers an output current range of 80-104A and supports a motor power range between 22-30 kW.
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Product Description:
The 175H1250 is a VLT 3032 variable speed drive from Danfoss that is engineered for motor control in industrial machines. It provides a continuous output current of 44 A and can handle 70.4 A intermittently for a 60-second period. The drive’s continuous output power is rated as 31.6 kVA and 50.6 kVA as peak output for a bearable time of 60 seconds.
The 175H1250 drive features programmable output frequencies of 0 - 120 Hz or 0 - 500 Hz and it delivers 0 - 100% of the AC line voltage as output voltage, which can be adjusted depending on operational requirements. This drive is designed to work with an input voltage range of 380 V to 460 V and at full load it maintains an efficiency of 96% to reduce energy consumption. Electronic thermal protection and a thermistor for overtemperature detection is included that comply with DIN44081 standards for motor protection. The 175H12 drive’s IP21/IP54-rated enclosures provides solid protection from dust and moisture ingress to ensure longevity in harsh environments. Its power loss in CT mode is calculated as 154 W, while in VT mode, it is 130 W that reflects its energy-efficient design. This unit can withstand a vibration level of 0.7g and it weighs 139 lbs.
The 175H1250 drive supports a maximum motor cable length of 1000 feet for unshielded cables. Its input current for constant load (CT) is rated as 41.9 A and for quadratic load (VT), it is 57.5 A. The 175H12 drive provide 5 times/min switching at the input, while offers unlimited switching at the output and it uses 80 A of pre-fuse for protection. It complies with EMC standards including EN 50081-1, VDE 0875, VDE 0871 and IEC 801-2 for electromagnetic compatibility and immunity.
Frequently Asked Questions about 175H1250:
Q: What advantage does the programmable 0–500 Hz output offer in the 175H1250 drive?
A: It allows finer speed control for a wider variety of motor types and applications. This flexibility enhances precise torque delivery and adapts to variable-speed requirements.
Q: Why is electronic thermal protection important in the 175H1250 drive?
A: It automatically shuts down or limits output when overheating, preventing motor and drive damage. This ensures operational safety and longevity in variable load conditions.
Q: In what way does the 96% efficiency rating of the 175H1250 drive impact energy use?
A: Its higher efficiency reduces conversion losses, lowering power consumption and heat generation. It contributes to energy savings and cooler operation under continuous load.
Q: How does the built-in thermistor complement thermal protection in the 175H1250 drive?
A: It gives real-time temperature readings and triggers protective actions ahead of overheating. This dual-layer protection enhances thermal management and reliability.
Q: What purpose does the pre-fuse rating of 80 A serve in the 175H1250?
A: It safeguards the drive and connected equipment from short circuits and overcurrent. This protective element increases safety and prevents system failure.
