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參數(shù)資料
| 型號： | 2R-1BI-5.5 |
| 廠商： | Littelfuse, Inc. |
| 元件分類： | 保險絲 |
| 英文描述： | Medium Voltage Fuses |
| 中文描述： | 中等電壓保險絲 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 346K |
| 代理商： | 2R-1BI-5.5 |
62
R Rated Medium Voltage Fuses
Current Limiting
FEATURES
“R” rated fuses provide required short-circuit protection for
medium voltage motors, motor controllers and associated
circuitry.These components have limited ability to absorb the
energy of large short circuit currents. Medium voltage motor
controllers contain overload relays which provide both over-
load protection and locked rotor protection to the motor.The
controllers are also intended to interrupt low value short cir-
cuits within the capability of the motor controller.This pro-
tects the medium voltage fuse from sustained overcurrents
which are less than their minimum interrupting rating.
NEMA Standards for “R” rated medium voltage power fuses
require that they operate within 15-35 seconds when sub-
jected to an rms current 100 times the “R” rating. For exam-
ple, a fuse with a 2R rating will open within 15 to 35 seconds
on an applied current of 2 x 100 = 200 amperes.
Part Number System
130-4R-1C-5.5
Catalog
Number
70-2R-1C-2.75
100-3R-1C-2.75
130-4R-1C-2.75
150-5R-1C-2.75
170-6R-1C-2.75
200-9R-1C-2.75
230-12R-1C-2.75
390-18R-2C-2.75
450-24R-2C-2.75
2
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
Old
Catalog
Number
LCK 2R
LCK 3R
LCK 4R
LCK 5R
LCK 6R
LCK 9R
LCK 12R
LCK 18R
LCK 24R
Size
2R
3R
4R
5R
6R
9R
12R
18R
24R
Maximum
Continuous
Current
@ 40 deg C.
70
100
130
150
170
200
230
390
450
Dim. A
(inches)
7"
7"
Dim. B
(inches)
10.875"
10.875"
Minimum
Interrupting
Rating
RMS Amps
170
250
340
390
500
760
1000
1500
1950
Max
Interrupting
Rating
RMS Asym
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
80,000
Figure
Number
1
1
1
1
1
1
1
2
2
CHARACTERISTICS
Voltage Rating:
2,400 volts
–
15,500 volts
Current Range:
2R
–
36R
OPTIONS
I
Hermitically sealed for use in hazardous locations
(add
“
S
”
suffix to part number)
I
Hookeye attachment (add
“
W
”
suffix to part number)
I
Bolt-in mounting configurations
R
FIGURE 1
FIGURE 2
FIGURE 3
Hookeye
Feature*
*For hookeye attach-
ment; add
“
W
”
suffix
to part number
Max Voltage (KV)
Style (C-Cartridge)
No. of Barrels
Rating (size)
Continuous Current
Add
“
w
”
suffix to part number for hookeye attachment.
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