Q217U-3

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The Q217U-3 transformer operates on an input voltage of 240V, 60Hz single-phase, provides an output voltage ranging from 0-240V, and supports a maximum output current of 6.3 amperes under constant impedance load type. From the POWERSTAT Transformers series by Danaher, it features regulated operation for consistent output.

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Product Description:

Danaher manufactures the Q217U-3. A single-phase variable autotransformer designed for 240V root mean square (RMS) input at a typical utility frequency of 60Hz is the Danaher Q217U-3 POWERSTAT Transformer. The input frequency of the transformer indicates the number of full electrical oscillations per second, which takes into consideration the sinusoidal character of alternating current. The transformer's magnetic flux behavior inside the laminated core is supported by this electrical standard, which also guarantees compatibility with North American industrial power systems. The main input terminal's phase alignment and voltage stability are essential for reducing core losses and maximizing the effectiveness of magnetic coupling between windings.

One of the Q217U-3's unique features is its continuous variable output voltage range of 0 to 240V, which is accomplished using a sliding brush mechanism that moves over the autotransformer winding. With this arrangement, the secondary voltage may be dynamically adjusted without requiring a change in the main side's active coil turns. Fine electrical tuning is made possible by the mechanical interface, which is a 317.5-degree control knob that allows high-resolution manipulation of the voltage gradient between the output terminals. This function is particularly helpful in high-precision settings where process integrity requires precise management of incremental voltage alterations, such as variable-speed motor controllers, automated test equipment (ATE) sets, and calibration labs.

In terms of electrical performance, the unit can produce up to 6.3 amperes of current while the impedance load is constant. The maximum load that the transformer can withstand without going over its thermal and magnetic saturation limits is indicated by this rating. The thermal design of the transformer, which includes the ventilation, conductor gauge, and core cross-section, guarantees the safe dissipation of heat produced by I²R losses at full load. The unit's functional stability is further improved by the controlled output characteristic, which reduces voltage variations brought on by input fluctuations. This is important in situations where the susceptibility of downstream equipment to transient circumstances or voltage ripple might affect system dependability or create error states. Because of this, the Q217U-3 provides dependable, precisely regulated AC power for a wide range of industrial and metrological applications.

Approximate Driving Torque
7.2-9 kpcm (100-125 oz-in)
D-c Resistance Per Coil
3.9 ohms
Dial Graduation
Graduated in volts
Frequency Range
60-1500 Hz
Input Voltage
240V, 60Hz single-phase
Knob Rotation Angle
317.5°
Load Type - Constant Current
4.0 amperes
Load Type - Constant Impedance
Maximum output current 6.3 amperes
No-load Loss At 60 Hz
25.5 watts
Output Current
4.0 amperes
Output Current At 400 Hz
Constant Impedance: 7 Amps, Constant Current: 5 Amps
Output Voltage
0-240V
Panel Mounting
Yes
Regulated Operation
Constant output voltage regardless of input variations
Voltage Drop For Full Load
Proportional to the load

Frequently Asked Questions about Q217U-3:

Q: What is the input voltage for the Q217U-3 POWERSTAT Transformer?

A: The Q217U-3 transformer operates with an input voltage of 240V at 60Hz, single-phase, making it suitable for typical industrial AC power sources in many regions.

Q: What is the output voltage range of the Q217U-3 transformer?

A: The Q217U-3 provides a variable output voltage that can be adjusted from 0V to 240V, offering flexibility for various industrial applications.

Q: What is the maximum output current for the Q217U-3 under constant impedance load?

A: Under a constant impedance load, the Q217U-3 can provide a maximum output current of 6.3 amperes, ensuring reliable power delivery.

Q: How does the Q217U-3 maintain regulated operation?

A: The transformer uses regulated operation to maintain a consistent output voltage regardless of fluctuations in input voltage, ensuring stable performance.

Q: What is the knob rotation angle for the Q217U-3, and how does it affect voltage adjustment?

A: The Q217U-3 features a 317.5-degree knob rotation, allowing for precise and fine-tuned voltage adjustments across the entire 0-240V range.


Internal Product Review

  • ‘‘The Q217U-3 POWERSTAT Transformer provides a reliable means of achieving variable AC voltage output. Its regulated operation ensures a stable output voltage, crucial for applications sensitive to input variations. The wide output voltage range (0- 240V) offers versatility, and the specified current ratings for both constant impedance and constant current loads provide essential performance parameters. The 317.5-degree knob rotation allows for precise adjustments, and the panel mounting capability facilitates integration into various industrial setups.’’

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