178B3775

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The 178B3775 drive offers an output current of 32 amps, a typical output power of 18.5 kW (25 HP) at 400 V, and a max ambient temperature of 45°C. As part of the VLT 6000 HVAC Drives produced by Danfoss, it features electronic motor thermal protection and supports cable lengths up to 1000 feet unshielded.

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Product Description:

The Danfoss 178B3775 is a dependable drive. It is designed to work well in tough HVAC situations. This drive can handle an output current of 32 A and work well at temperatures up to 45°C. It can run at both 50 and 60 Hz, which makes it easy to install in a broad variety of places across the world.

The 178B3775 can communicate via RS 485 serial lines, which is a vital characteristic that makes it easy to integrate into current building management and automation systems. The drive has many standard communication protocols built in, such as RS 485 FC, Johnson's Metasys N2, and Landis/Staefa Apogee FLN. This makes it simple to connect the drive to different control schemes. Safety and appropriate electrical isolation are two crucial parts of the drive's construction. the switch is OFF, all control inputs and outputs should be handled as simple low-voltage terminals with no extra isolation.

When using DC-bus terminals, the drive has more voltage inputs than only L1, L2, and L3. This means that it is very important to make sure that all voltage sources are unplugged and that there is enough time for the unit to discharge before repairing it. The drive has a lot of modern HVAC-related functions. Automatic Energy Optimization (AEO) helps cut down on energy use by changing the voltage and frequency on the fly to meet system demand. The "flying start" feature lets the drive catch and operate a fan that is already spinning without any problems. The drive also incorporates automated ramp-up and ramp-down mechanisms to prevent the machine from tripping when speeding up or slowing down, making sure it runs smoothly and reliably.

Ambient Temperature Max
45°C
Control Interface
RS 485 serial communication
Dimensions (chassis)
31.5 in x 14.6 in x 13.2 in (A x B x C)
Enclosure Type
Chassis, NEMA 1, NEMA 12
Frequency
50/60 Hz
Input Voltage
380-480 V AC
Max Cable Length (shielded)
500 feet
Max Cable Length (unshielded)
1000 feet
Max Relative Humidity
95% non-condensing
Min Ambient Temperature
0°C (Full Operation)
Output Current
32 A
Protection Level
Electronic motor thermal protection
Typical Output Power
18.5 kW (25 HP) at 400 V

Frequently Asked Questions about 178B3775:

Q: What is the input voltage requirement for the 178B3775 drive?

A: The input voltage is 380-480 V AC.

Q: What input frequency does this drive support?

A: It supports both 50 Hz and 60 Hz frequencies.

Q: What is the output current rating?

A: The output current is 32 A.

Q: What is the typical output power at 400 V?

A: The typical output power is 18.5 kW (25 HP) at 400 V.

Q: What types of enclosures are available for this drive?

A: Enclosure types include chassis, NEMA 1, and NEMA 12 options.


Internal Product Review

  • ‘‘The 178B3775 is a strong HVAC drive that can handle 32 A of output current and a maximum temperature of 45°C. Danfoss made it as part of their VLT 6000 HVAC Drives series. It can communicate via RS 485 serial lines. The drive works at 50/60 Hz.’’

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