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参数资料
| 型号： | LT1240-7DZFB1 |
| 厂商： | POWER-ONE INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 500 W AC-DC REG PWR SUPPLY MODULE |
| 封装： | CASE T01, MODULE |
| 文件页数： | 7/33页 |
| 文件大小： | 864K |
| 代理商： | LT1240-7DZFB1 |
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Cassette Style
AC-DC Converters
T Series
Edition 5/5.2000
15/33
Temperature Sensors
The active T temperature sensors are of robust construc-
tion, mounted into a sealed aluminium tube of 12 mm outer
diameter and 50 mm length. The sensors are water proof
(IP 66) and high voltage tested with 1.4 kV DC. Connection
should be done via the colored 3-wire cable to the T unit
output (Vo+ and Vo-) and the remote control input
Ucr.
Wrong connection may damage the sensor.
The temperature sensor should be as close to the battery
terminal as possible for most accurate temperature meas-
urements.
Sensor
20/22
Vo–
12/14
Vo+
28
i/Ucr
brown
white
green
05065
Fig. 25
Wiring diagram sensor
Table 10: Type survey
Sensor types
Battery voltage
Float charge
Cell voltage
Temp. coefficient
Cable length
nominal [V]
voltage (20
°C) [V]
(20
°C) [V/cell]
[mV/K/cell]
[m]
S24-2.23-30-02 1
24
26.76
2.23
–3.0
2
S24-2.23-35-02 1
24
26.76
2.23
–3.5
2
S36-2.23-30-02 1
36
40.14
2.23
–3.0
2
S36-2.23-35-02 1
36
40.14
2.23
–3.5
2
S48-2.23-30-02 1
48
53.52
2.23
–3.0
2
S48-2.23-35-02 1
48
53.52
2.23
–3.5
2
S48-2.27-30-02 2
48
54.48
2.27
–3.0
2
S48-2.27-35-02 2
48
54.48
2.27
–3.5
2
1 Standard types for conventional tubular lead acid batteries. The same sensor can be used for battery systems with different cell volt-
ages within the selectable range of Z. Each step on the selector switch changes the cell voltage by 10 mV in the range from 2.23 V up
to 2.32 V, at 20
°C.
2 Standard types for sealed lead acid batteries for LT 1740 without option Z.
Battery specific sensors with cell voltages from 2.23 V up to
2.32 V and temperature coefficients from –2 up to –4.5 mV/
K/cell or different cable lengths are available upon request.
Important remarks
Note 1:
By choosing a battery with a large temperature coefficient
or with a high cell voltage, the required temperature range
may be limited by the output voltage control range of the T
unit(s).
Note 2:
The temperature sensor together with the mounting fixture
should be mounted as close as possible to the battery.
Through their chemical activity batteries may be warmer
than the ambient temperature. Battery banks heat up if they
are mounted too close together thus blocking free air flow.
Since battery life is halved with every 10 K temperature in-
crease, it is recommended that the batteries be mounted at
the bottom of the cabinet or in a separate, cool area.
Note 3:
The sensor supply wire Vo+ (brown) should be refered to
the T unit output pin 12/14. If the sensor common (green)
wire is connected to the power bus, resistive voltage drops
or voltage drops across decoupling diodes in the Vo– sup-
ply line will be compensated by the sensor.
Decoupling diodes or fuses in the Vo– supply line are not
recommended as in case of a short circuit across the output
of a T unit, status signalling of the system is affected.
Note 4:
For installation of batteries see also VDE 510 as well as the
recommendations of the battery manufacturers.
Table 11: Sensor data
Characteristics
Condition
min
typ
max
Unit
Tsensor
Sensor temperature range
Ucr = 5.5...11.5 V
–10
60
°C
Ucr
Control voltage range
Absolute ratings
3.9
15
V
Ucr td
Control voltage tolerance
Tsensor = 20°C
±0.1
Tsensor = 0...53°C
±0.2
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