3.7 CONNECTING THE LOAD

WARNING

Turn off the AC input power before making or changing any rear panel connection. Ensure that all connections are securely tightened before applying power. There is a potential shock hazard when using a power supply with a rated output greater than 40V.

3.7.1 Load Wiring.

The following considerations should be made to select wiring for connecting the load to the power supply: * Current carrying capacity of the wire (refer to 3.7.2).

*Insulation rating of the wire should be at least equivalent to the maximum output voltage of the power supply.

*Maximum wire length and voltage drop (refer to 3.7.2).

*Noise and impedance effects of the load wiring (refer to 3.7.3).

3.7.2 Current Carrying Capacity

Two factors should must be considered while selecting the wire size. 1.Wires should be at least heavy enough not to overheating while carrying the power supply load current at the rated load, or the current that would flow in the event the load wires were shorted, whichever is greater.

2.Wire size should be selected to enable voltage drop per lead to be less than 1.0V at the rated current. Please refer to Tables 3-2 and 3-3 for maximum wire length to limit the voltage drop in American and European dimensions respectively.

wire size

Resistivity

Maximum length in Feet to limit voltage

 

 

AWG

Ohm/kft

drop to 1V or less.

 

 

 

 

 

 

5A

10A

20A

 

50A

150A

14

2.526

80

40

20

 

8

2

12

1.589

120

60

30

 

12

3.4

10

0.9994

200

100

50

 

20

6

8

0.6285

320

160

80

 

32

10

6

0.3953

500

250

125

 

50

16

4

0.2486

800

400

200

 

80

26

2

0.1564

1200

600

300

 

125

40

0

0.0983

2000

1000

500

 

200

68

Table 3-2:Maximum wire length for 1V drop on lead (in feet).

Cross sect.

Resistivity

Maximum length in meters to limit voltage

 

 

Area

Ohm/km

drop to 1V or less.

 

 

 

 

(mm^2)

 

5A

10A

20A

 

50A

150A

2.5

8.21

24.0

12.0

6.0

 

2.4

0.8

4

5.09

39.2

18.6

9.8

 

4.0

1.4

6

3.39

59.0

29.4

14.8

 

5.8

2.0

10

1.95

102.6

51.2

25.6

 

10.2

3.4

16

1.24

160.0

80.0

40.0

 

16.0

5.4

25

0.795

250.0

125.0

62.0

 

25.2

8.4

35

0.565

354.0

177.0

88.0

 

35.4

11.8

Table 3-3:Maximum wire length for 1V drop on lead (in meters).

For currents not shown in Tables 3-2 and 3-3 , use the formula : Maximum length=1000/(current*resistivity)

Where current is expressed in ampers and resistivity in ohms/km or ohms/1000ft.

8

Page 10 Page 12
Page 11
Image 11
TDK FPS1000-24, FPS-T1U, FPS1000-12, FPS-S1U, FPS1000-48 manual Connecting the Load, Load Wiring, Current Carrying Capacity
Page 10 Page 12

FPS1000-32, FPS-S1U, FPS1000-48, FPS1000-12, FPS-T1U specifications

TDK has established itself as a leading innovator in power supply solutions with its range of FPS series products, specifically designed for various demanding applications. Among these, the FPS1000-24, FPS-T1U, FPS1000-12, FPS1000-48, and FPS-S1U models stand out due to their advanced features, robust technologies, and versatile characteristics.

The FPS1000-24, catering to a voltage output of 24V, is ideal for both industrial and commercial applications. It delivers a notable output power of 1000 watts while boasting high efficiency, making it a reliable option for systems that require consistent power with minimal energy loss. The model incorporates advanced protection features including over-voltage, over-current, and short-circuit protection, ensuring that connected devices are safeguarded against potential electrical faults.

Similarly, the FPS1000-12 offers a 12V output with equivalent power ratings, making it suitable for applications such as telecommunications and medical devices where stability and reliability are paramount. This model also emphasizes thermal management, utilizing integrated cooling technologies to maintain optimal performance even under demanding conditions.

The FPS1000-48 distinguishes itself with a 48V output, which is increasingly prevalent in high-density computing environments and server applications. With enhanced scalability, this model allows for multiple unit configurations to support higher load demands while maintaining exceptional efficiency levels.

In addition to the standard offerings, TDK’s FPS-T1U and FPS-S1U models provide intelligent power management solutions. The FPS-T1U, being a compact version, is tailored for space-constrained environments, ensuring high performance without compromising on size. It features built-in monitoring capabilities that allow users to track power usage and efficiency metrics in real-time.

The FPS-S1U is particularly notable for its modular design, enabling easy integration into various systems. This flexibility allows users to adapt the power supply to specific system requirements, enhancing functionality across diverse applications. Both models leverage cutting-edge technology to ensure low standby power consumption, reducing the overall energy footprint.

Overall, TDK’s FPS series exemplifies a commitment to quality, performance, and adaptability, making them ideal candidates for modern power supply needs across industries. With their comprehensive protection mechanisms, efficiency, and innovative designs, they stand as reliable choices for engineers and designers looking to optimize their systems.
Top Page Image Contents