ALUMINUM ELECTROLYTIC CAPACITORS
LNU
Specifications
Item
Screw Terminal Type, 105°C
High Voltage, Smaller Sized.
Suited for use in industrial power supplies for inverter circuitry, etc.
Rated voltage range up to DC525V.
Load life of 5000 hours application of ripple current at 105°C.
High voltage / Smaller sized than LNT.
Coped with loading of high speed charge-discharge.
Suited for high frequency regenerative voltage for AC servomotor,
general inverter.
Compliant to the RoHS directive (2011/65/EU).
LNU
High
Voltage
Smaller
LNT
Performance Characteristics
Category
Temperature Range
Rated
Voltage Range
Rated
Capacitance Range
Capacitance Tolerance
Leakage Current
Tangent of loss angle (tan
δ)
–
40 to +105
°C
400 to 525V
680 to 18000
µ
F
± 20% (120Hz, 20°C)
3
CV
After 5 minutes' application of rated voltage, leakage current is not more than
3 CV
(
µ
A) or 5 mA, whichever is smaller. (at
20°C)
[C : Rated Capacitance(µF), V : Voltage ( V ) ]
See refer to next page (Measurement frequency : 120Hz at 20°C)
Rated voltage(V)
400 to 525
Z
–
40°C / Z+20°C
8
3 CV
Measurement frequeny : 120Hz
Stability at Low Temperature
Insulation Resistance
Voltage proof
Impedance ratio
ZT/Z
20
(MAX.)
The insulation resistance shall be more than 100MΩ at DC 500V application between terminal and bracket.
There is no abnormality during AC 2500V 1 minute's application between terminal and bracket.
The specifications listed at right shall be met when the capacitors are
restored to 20°C after D.C. bias plus rated ripple current is applied for
5000 hours at 105°C, the peak voltage shall not exceed the rated
voltage.
Capacitance change
tan
δ
Leakage current
Within ±20% of the initial capacitance value
200% or less than the initial specified value
Less than or equal to the initial specified value
Within ±20% of the initial capacitance value
200% or less than the initial specified value
Less than or equal to the initial specified value
Within ±20% of the initial capacitance value
200% or less than the initial specified value
Less than or equal to the initial specified value
Endurance
Shelf Life
After storing the capacitors under no load at 105°C for 1000 hours Capacitance change
and then performing voltage treatment based on JIS C 5101-4 tan
δ
clause 4.1 at 20°C, they shall meet the reguirements listed at right. Leakage current
After an application of charge-discharge voltage for 50million times Capacitance change
(charge-discharge voltage difference(ΔV) = rated voltage
×
0.3, cycle 3Hz) tan
δ
capacitors shall meet the characteristics requirement listed at right.
Leakage current
Printed with white color letter on black sleeve
Endurance of charge -
discharge behavior
Marking
Drawing
Screw terminal types for
φ51
and larger
Bottom plate
Sleeve
Hexagenal headed bolt
0°
12
Type numbering system (Example : 500V 4700µF)
1
2
3
4
5
6
7
8
9
10 11
12 13 14
Mounting bracket
Pressure relief vent
D
+2MAX
L NU 2 H 4 7 2 M S E H
W
±1
S
T
U
h
H
±1
L
+
MAX.
±1
B
P
±2
A
±2
A
±2
P
B
3-leg brackets for
φ90
capacitors have different
hole shapes from the ordinary ones illustrated
below.
U
S
T
Configuration
standerd
specifications
stud mount type
Resin bushing available upon request.
Note) The terminal bolts and mounting brackets will be delivered.
Please refer to page 334 for schematic of dimensions.
Please contact to us if PVC less products are required.
SE
TE
P
5
Pressure relief vent
30°
7
Note) The brackets will be supplied in the separate box.
Dimensions of mounting bracket
Leg shape
(mm)
2 --Leg
90
50.8
58.5
8.0
5.0
18
60
35
25
51
33.2
40
6.0
4.5
14
30
25
15
63.5
40.5
46.5
7.0
4.5
14
30
35
20
76.2
46.5
53
6.0
4.5
14
30
35
20
90
53
59
6.0
4.5
14
30
35
20
Dimension of terminal pitch (W) and length (
R
) and Nominal dia.of bolt
φD
51
63.5
76.2
90
W
22.0
28.6
31.8
31.8
R
6
6
6
6
α
3
3
3
3
M5
M5
M5
M5
3 --Leg
51
32.5
38.5
7.5
5.0
12
60
20
15
63.5
38.1
43
8.0
5.0
14
60
25
20
76.2
44.5
49.2
7.0
5.0
14
60
30
24
(mm)
Symbol
φD
Nominal dia. of bolt
P
A
T
S
U
°
About product of stud bolt
Nylon nut and nylon washer attachment become the standard
specifications. (cf. P.334)
It is not attached to the bracket.
Field 13 and 14 become blank in Type number system.
H
h
Dimension table in next page.
355
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