Screw-Terminal Electrolytic Capacitors for Industrial UPS Systems
Designed for industrial uninterruptible power supply systems, our screw-terminal electrolytic capacitors deliver 3000 hours of dependable operation at 105°C with full RoHS compliance. With a high voltage range of 350V to 700V and capacitance values up to 15000μF, these robust components feature secure screw terminals for high-power connections and are ideal for mission-critical industrial backup power applications.
Overview of Industrial UPS Screw Terminal Electrolytic Capacitors
Screw terminal aluminum electrolytic capacitors designed for industrial UPS systems deliver stable energy storage and discharge performance for demanding industrial environments. Manufactured by a company with production experience dating back to 2001, these capacitors comply with global industry standards and serve a diverse range of industrial clients across multiple sectors.
Key Features of Industrial UPS Screw Terminal Electrolytic Capacitors
Temperature and Electrical Specifications
These capacitors operate within a temperature range of -25℃ to +105℃, with a rated voltage range spanning 350V to 700V and a rated capacitance range from 820μF to 15000μF. The rated capacitance tolerance is ±20% at 120Hz and 20℃. Leakage current does not exceed the smaller value of 3/CV μA or 5mA when tested at 20℃ for 5 minutes.
Endurance and High-Temperature Stability
When subjected to the specified standard ripple current within the rated voltage range at 105℃ for 3000 hours (2000 hours for products with rated voltages of 10-250V and 500V grade), the capacitors meet the following requirements after recovery and testing at 20℃: capacitance change rate within ±20% of the initial value, tan δ ≤ 300% of the initial standard value, and leakage current ≤ the initial standard value. For high-temperature no-load conditions, after storage at 105℃ for 1000 hours and voltage treatment in accordance with JIS C5101-4.1 at 20℃, the capacitors maintain capacitance change rate within ±20% of the initial value, with tan δ and leakage current remaining at or below initial levels.
Global Compliance Standards
All products comply with the RoHS directive 2002/95/EC and have passed CE and CB testing certifications, meeting EU safety and environmental requirements.
Core Technical Specifications for Screw Terminal Capacitors
Item
Technical specification
Temperature range
-25~+105℃
Rated voltage range
350~700V
Rated capacitance range
820-15000μF
Rated tolerance range
±20%(120Hz,20℃)
Leakage current
Not exceeding the smaller value of 3/CV (μ A) or 5 mA (20℃, 5 minutes)
(tan 6)(MAx.)
V ΦD L
10
16
25
35
50
63
80
100
160~250
350~450
120HZ 20℃
35
80~100
0.65
0.45
0.4
0.3
0.25
0.25
0.2
0.12
0.15
0.2
51
80~100
0.8
0.6
0.5
0.4
0.25
0.25
0.2
0.15
0.15
0.2
120
0.85
0.6
0.5
0.4
0.3
-
-
-
-
0.2
63.5
100
-
-
0.65
-
0.35
0.3
0.25
0.2
0.2
0.2
110~130
1.2
0.8
0.7
0-5
0.35
0.3
-
-
0.2
0.2
76.2
100
2.0
1.2
0.9
0.7
0.55
0.5
0.3
0.3
-
0.2
120~150
2.0
1.2
0.9
0.7
0.55
0.5
0.35
0.3
0.2
0.2
90
140~220
2.4
2.0
1.5
1.0
0.75
0.6
0.4
0.3
0.25
0.2
100
220,250
2.4
2.0
1.5
1.0
0.75
0.6
0.4
0.3
0.25
0.2
Temp.specification
Rated voltage(V)
10~100
160~450
120HZ
Resistivity(MAX.)
Z-40℃/Z+20℃
Z-25℃/Z+20℃
12
8
Endurance
After applying the specified standard ripple current within the rated voltage range at 105℃ for 3000 hours (2000 hours for products with a rated voltage of 10 ~ 250V and 500V grade), the following requirements shall be met when tested at 20℃ after recovery.
Capacitance Change Rate
Within ±20% of the initial value
tan 6
≤ 300% of the initial standard value
Leakage current
≤ the initial standard value
High Temperature No- Load Characteristics
After being stored at 105℃ under no-load conditions for 1000 hours, and subject to voltage treatment in accordance with JIS C5101-44.1 at 20℃, the following requirements shall be met.
Capacitance Change Rate
Within ±20% of the initial value
tan δ
≤ the initial standard value
Leakage current
≤ the initial standard value
Frequency Correction Factor
ΦD
W
δ
a
Terminal diameter
51
22.0
6
3
M5
63.5
28.6
6
3
M5
76.2
31.8
6
3
M5
90
31.8
6
3
M5
Fixed strap dimension table
Pin quantity
ΦD
mark
3 pins
2 pins
51
63.5
76.2
90
100
51
63.5
76.2
90
P
32.5
38.1
44.5
50.8
56.3
33.2
40.5
46.5
53
A
38.5
43
49.2
58.5
62
40
465
53
59
T
75
8.0
7.0
8.0
80
60
70
6.0
6.0
S
5.0
5.0
5.0
50
50
45
45
45
4.5
U
12
14
14
18
16
14
14
14
14
θ°
60
60
60
60
60
30
30
30
30
H
20
25
30
35
36
25
35
35
35
h
15
20
24
25
30
15
20
20
20
Frequency (Hz)
60
120
360
1k
10k~
Coefficient
0.82
1.00
1.20
1.35
1.40
The estimated lifetime of capacitors can be calculated by the following formula, based on the internal temperature rise of the capacitor caused by the actual operating temperature and ripple current, as well as the voltage drop.
Ln=L0×210105−T×2−KΔT×a
Ln: Expected lifetime under actual operating conditions(h)
Lo: Actual lifetime at 105℃ with DC applied, no ripple current superimposed.
T: Actual operating temperature(℃)
△T: Internal temperature rise of capacitor caused by ripple current (℃)
K: Ripple temperature rise acceleration coefficient
T+\triangle T=90℃$时 K=1.0$
T+\triangle T>90℃$时 K=2.5$
a: Lifetime correction coefficient
Lifetime Correction Coefficient a (Caused by Voltage Drop)The coefficient is determined by the actual operatingtemperature and applied voltage.
Actual Operating Temperature
T≤70℃
70℃<T≤105℃
Voltage Ratio
Irrespective of applied voltage
VN。≤0.8
0.8<VN。≤0.9
0.9<VN。≤1.0
a
1.0
1.0
0.8
0.7
Note: V = Applied Voltage (V); Vo = Rated Voltage (V)
※The product may have no negative pole indicator on the outer casing; please pay attention to the polarity marking at the screw terminal.
350V(2V)
Ratedcapa citance (μ F)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
4700
51x170
17.0
0.15
3.84
76.2x90
16.4
0.15
3.84
5600
63.5x150
20.4
0.15
4.20
76.2x110
19.7
0.15
4.20
6800
63.5x170
23.5
0.15
4.62
76.2x130
22.9
0.15
4.62
90x100
22.5
0.15
4.62
8200
63.5x190
27.1
0.15
5.00
76.2x150
26.4
0.15
5.00
10000
76.2x170
31.1
0.15
5.00
90x130
30.2
0.15
5.00
400V(2G)
Ratedcapa citance (μ F)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
3300
51x150
13.7
0.15
3.44
63.5x110
13.2
0.15
3.44
3900
63.5x130
16.0
0.15
3.74
76.2x90
15.3
0.15
3.74
4700
63.5x130
18.7
0.15
4.11
76.2x110
18.3
0.15
4.11
5600
63.5x170
22.0
0.15
4.49
76.2x130
21.4
0.15
4.49
6800
76.2x150
25.4
0.15
4.94
8200
76.2x170
28.6
0.15
5.00
90x130
27.8
0.15
5.00
10000
90x160
32.7
0.15
5.00
12000
90x170
37.6
0.15
5.00
450V(2W)
Ratedcapa citance (μ F)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
3300
63.5x130
12.4
0.15
3.65
76.2x100
11.8
0.15
3.65
3900
63.5x150
13.7
0.15
3.97
76.2x110
14.1
0.15
3.97
90x90
13.6
0.15
3.97
4700
63.5x170
16.5
0.15
4.36
76.2x130
16.3
0.15
4.36
90x110
15.8
0.15
4.36
5600
63.5x190
19.4
0.15
4.76
90x130
19.1
0.15
4.76
6800
76.2x170
23.3
0.15
5.00
8200
90x150
26.1
0.15
5.00
10000
90x190
31.3
0.15
5.00
12000
90x220
35.5
0.15
5.00
500V(2H)
Ratedcapa citance (μ F)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
3900
90x100
9.8
0.15
4.19
76.2x155
11
0.15
4.19
4700
90x100
11.8
0.15
4.60
76.2x130
11.7
0.15
4.60
5600
90x110
13.6
0.15
5.02
76x150
15.1
0.15
5.02
600V(2J)
Ratedcapa citance (μF)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
3900
90x110
15.1
0.15
4.60
76.2x140
16
0.15
4.60
4700
90x130
17.6
0.15
5.04
76.2x180
19.5
0.15
5.04
5600
90x170
22.2
0.15
5.50
76x190
21.1
0.15
5.50
700V(2P)
Ratedcapa citance (μ F)
Dimension ΦDxL(mm)
Ripple current (mA)
tan δ
leakage current (mA)
3900
90x130
12.2
0.15
4.96
76.2x180
14.1
0.15
4.96
4700
90x150
14.1
0.15
5.44
76.2x220
16.6
0.15
5.44
5600
90x180
18.3
0.15
5.94
100x160
18
0.15
5.94
Industrial Applications of Screw Terminal Electrolytic Capacitors
These capacitors are primarily designed for industrial UPS systems, providing reliable energy backup for critical infrastructure. Additional applications include switching power supplies, frequency converters, stepping servo controllers, AC servo systems for sewing equipment, and health equipment controllers. The company supplies capacitors to leading enterprises across these industries, with products accounting for over 70% of the market share in the health equipment controller segment.
Core Technologies
The company possesses 2 patented technologies and 8 copyrights for production control software. The products with a working voltage of 600V that are mass-produced are domestically leading.
Product Standards
The products meet the EU standards and have passed the CE and CB testing certifications.
History of Development
In 2001, the enterprise was established in Beijing.
In 2007, the Suzhou branch was established, and in the same year, the production plant was relocated to Suzhou.
In 2011, the construction of the Anhui factory was initiated.
By the end of 2012, the Anhui factory was officially put into production.
In May 2013, the core production equipment was updated, with a cumulative investment of RMB 15 million in the equipment.
Cooperative Customers
For stepping servo controllers: Shenzhen Leadshine, Beijing HollySys, Start and others.
For AC servo systems of sewing equipment: Baumax, Supu, Hengqiang, Wolong.
In the field of health equipment controllers, UUcap capacitors account for more than 70% of the market share. The company is the designated supplier for brands such as Icon (USA), Shuhua, and Oma.
Customers in industries such as industrial UPS, switching power supplies, and frequency converters.
A.O. Smith, Technology Development Company of Tsinghua University.
FAQ about Industrial UPS Electrolytic Capacitors
What is the operating temperature range of these capacitors?
These capacitors operate within a temperature range of -25℃ to +105℃.
How to estimate the expected service life under actual conditions?
Use the formula Ln = L0 × 2^((105-T)/10) × 2^(-K×ΔT) × a, where variables are defined based on specific operating temperature, ripple current-induced temperature rise, and applied voltage ratio.
What safety certifications do these products hold?
The capacitors comply with RoHS directive 2002/95/EC and have passed CE and CB testing certifications.
What is the rated capacitance tolerance?
The rated capacitance tolerance is ±20% when measured at 120Hz and 20℃.
These screw terminal electrolytic capacitors offer a combination of wide parameter ranges and stable performance for industrial applications. The company operates multiple production facilities and holds 2 patented technologies and 8 production control software copyrights, supporting consistent supply and technical support for industrial clients. Contact the team for detailed product selection guidance and custom solution inquiries.
