参数资料
型号: 2938840
厂商: Phoenix Contact
文件页数: 56/106页
文件大小: 0K
描述: POWER SUPPLY 1A 24VDC
其它有关文件: Power Supply Warranty Extension
产品目录绘图: 2938840
标准包装: 1
系列: 迷你型
类型: 标准产品
输出数: 1
输出电压: 24V
输入电压: 100 ~ 240 VAC
输出 - 1 @ 电流(最大): 24 VDC @ 1A
功率(瓦特): 24W
电源类型: 开关(封闭框架)
应用: 商用
安装类型: DIN 轨道
尺寸/尺寸: 4.51" L x 0.89" W x 3.90" H(114.5mm x 22.5mm x 99.0mm)
工作温度: -25°C ~ 70°C
效率: 80%
电源(瓦特)- 最大: 24W
批准: cUL,UL
其它名称: 277-1668
MINI-PS-100-240AC/24DC/1
SYS POWER SUPPLY UM E
Table 3-8
On-load voltage U L as a function of the output current I and the cable
length l for copper cables with a cross section of 6 mm 2 (10 AWG)
L
I
30 A
40 A
0m
10 m (33 ft.)
20 m (66 ft.)
30 m (98 ft.)
40 m (131 ft.)
50 m (164 ft.)
60 m (197 ft.)
24.0 V
22.25
20.49
18.74
16.98
15.23
13.47
28.5 V
26.75
24.99
23.24
21.48
19.73
17.97
24.0 V
21.66
19.32
16.98
14.64
12.30
9.96
28.5 V
26.16
23.82
21.48
19.14
16.80
14.46
Table 3-9
On-load voltage U L as a function of the output current I and the cable
length l for copper cables with a cross section of 10 mm 2 (8 AWG)
l
I
30 A
40 A
0m
10 m (33 ft.)
20 m (66 ft.)
30 m (98 ft.)
40 m (131 ft.)
50 m (164 ft.)
60 m (197 ft.)
24.0 V
22.95
21.89
20.84
19.79
18.74
17.68
28.5 V
27.45
26.39
25.34
24.29
23.24
22.18
24.0 V
22.60
21.19
19.79
18.39
16.98
15.58
28.5 V
27.10
25.69
24.29
22.89
21.48
20.08
Example
A power supply unit with a nominal output current of I = 10 A supplies a load with an input
voltage of U L = 23.0 V DC via a copper cable with a cross section of 4 mm 2 (12 AWG).
1. Table 3-7 shows the cable cross section of 4 mm 2 (12 AWG).
2. A power supply unit with a nominal current of 10 A is shown in the second and third
columns.
Solution
Positioning power supply
units close to the load
center
If the power supply unit is set to 24 V, the supply voltage across the load is above 23 V for
a cable length of up to 10 m (33 ft.). If the output voltage of the power supply unit is set to
28.5 V, the voltage across the load is above 23 V for a cable length of up to 60 m (197 ft.).
Table 3-7 makes clear that central power supply over greater distances very quickly leads
to large cable cross sections or high losses. Both dramatically increases installation and
operating costs.
The best technical and most cost-effective solution is to use several distributed power
supply units, each positioned close to the load center.
Power supply units, which have a low overall depth, are particularly suitable for distributed
control boxes. QUINT POWER power supply units from Phoenix Contact fulfill these
requirements.
3-22
PHOENIX CONTACT
5598_en_03
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