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參數(shù)資料
| 型號(hào)： | IRMDSS1 |
| 廠商： | International Rectifier |
| 英文描述： | IR1110 Soft Start IC Reference Design Kit For AC Motor Drives, UPS, Welders, and other applications |
| 中文描述： | IR1110軟啟動(dòng)IC參考設(shè)計(jì)套件交流電機(jī)驅(qū)動(dòng)器，不間斷電源，焊工，和其他應(yīng)用程序 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大小： | 121K |
| 代理商： | IRMDSS1 |
4
IRMDSS1
3 . Setting up the IR 1110 Reference Design for use.
1. Mount the three IRKH Addapaks on a heatsink. A drill plan for
the mounting holes in the heatsink are shown in Fig 4.
The heatsink must be able to maintain the case
temperature of the Addapaks at less than 90
°
C, at full output
current. Typical losses in each Addapak module, for 3-phase
operation, are given in Table 2.
2. Position the PCB over the Addapak modules, fitting the gate
and auxiliary cathode fast-on terminals attached to the
modules into the slots in the PCB. Insert washers between the
module terminals and the holes in the PCB. Insert M5 screws
with washers through the holes on the PCB, through the
washers on the underside of the PCB, into the terminal holes of
the modules, and tighten. Solder the top stems of the fast-on
terminals into the PCB.
For dc current greater than 40A, remove JP2 and JP3 and
assemble as illustrated in Fig 3.
3. Make electrical connections as shown in Fig 5.
The IR 1110 Reference Design is now ready for use.
4 . Operating features.
4(a)
Soft charging of the dc bus capacitor.
When ac input voltage is switched on, the voltage across the dc
bus capacitor ramps up automatically, by phase-control of the SCRs.
The ramp-up rate is determined by capacitor (C24 + C24A). The factory-
fitted value is 3
μ
F. The corresponding ramp-up time is
approximately 330ms.
The ramp-up time can be reduced by reducing the paralleled combination of
C24 and C24A. For example, with C24A removed, and C24 = 1.0uF, the ram-up
time is approximately 150ms.
4(b)
Regulation of the dc bus voltage.
The operating bus voltage can be regulated by one of the
following methods:
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