Factory Supply Ac Capacitor For Welding Equipment - High power capacitor for power electronics – CRE

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Factory Supply Ac Capacitor For Welding Equipment - High power capacitor for power electronics – CRE Detail:

DKMJ-S Specification

CRE has been a world leader in high-performance film capacitor technology design for 10 years. We produce dry-wound capacitors, from 100VDC to 4kVDC. A key feature of CRE High Power is Controlled Self-Healing technology. This enables the capacitors to continue to function without catastrophic failure by effectively insulating any microscopic conduction sites within the dielectric.

While power film capacitors remain functional throughout their operating life, the initial capacitance value will decrease at a rate dependent upon the applied voltage and hot spot temperature. Our standard designs provide < (2-5)% capacitance loss over 100,000 hours lifetime at nominal voltage and a 70ºC hot spot temperature, while application specific designs can be provided on request. Various series of CRE High Power Capacitors are available for DC filtering, Protection, Pulse Discharge, Tuning, AC filtering and Storage applications.

2W4A2455
2W4A2481_副本
CRE plant

Technical data


Rated capacitance	CN	1880μF±10%
Rated voltage	UN	2150V.DC
Non-recurrent surge voltage	Us	3225V
Maximum current	Imax	240A
Maximum peak current	Î	28.2KA
Maximum surge current	Is	84.6KA
Series resistance	Rs	≤0.35mΩ
Tangent of the loss	tanδ	0.002 (100Hz)
Tangent of the loss angle	tanδ0	0.0002
Self dischargetime const.	C × Ris	10000S（100VDC 60S）
Self inductance	Le	≤29nH
Thermal resistance	Rth	0.33K/W
Lowest operating temperature	Èmin	-40°C
Maximum operating temperature	Èmax	85C
Storage temperature	Èstorage	-40~85°C
Service life	at Èhotspot	100000 h(≤70 °C)
Failure quota		100Fit

Test data
Voltage test between terminals	Vtt	3225V.DC/10S
A.C. voltage test terminal/container	Vt-c	7000V.AC/50Hz 10S

Operating altitude		2000m(max)
Maximal torque		25Nm(max)
Weight		≈25kg

DKMJ-S drawing

DKMJ-S Selection table

Voltage	Un 800V.DC Us 1200V Ur 200V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
4000	340	125	190	5	20.0	120	1.1	0.9	17.6
8000	340	125	350	4	32.0	180	0.72	0.6	31.2
6000	420	125	245	5	30.0	150	0.95	0.7	26.4
10000	420	125	360	4	40.0	200	0.72	0.5	39.2
12000	420	235	245	4	48.0	250	0.9	0.3	49.6
20000	420	235	360	3	60.0	300	0.6	0.3	73.6
Voltage	Un 1200V.DC Us 1800V Ur 300V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
2500	340	125	190	8	20.0	120	1.1	0.9	17.6
3300	340	125	245	8	26.4	150	0.95	0.7	22.4
5000	420	125	300	7	35.0	180	0.8	0.6	32.8
7500	420	125	430	5.5	41.3	200	0.66	0.6	44.8
5000	340	235	190	8	40.0	200	1.1	0.3	32.8
10000	340	235	350	6	60.0	250	0.8	0.3	58.4
5000	420	235	175	8	40.0	200	1	0.4	36
7500	420	235	245	7	52.5	250	0.9	0.3	49.6
10000	420	235	300	7	70.0	250	0.8	0.3	61.6
15000	420	235	430	5	75.0	300	0.6	0.3	84
Voltage	Un 1500V.DC Us 2250V Ur 450V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
1200	340	125	190	10	12.0	120	1.1	0.9	17.6
3000	340	125	420	8	24.0	180	0.66	0.7	37.6
2000	420	125	245	10	20.0	150	0.95	0.7	26.4
4000	420	125	430	8	32.0	200	0.66	0.6	44.8
5000	340	235	350	8	40.0	250	0.8	0.3	58.4
4000	420	235	245	10	40.0	250	0.9	0.3	49.6
8000	420	235	430	8	64.0	300	0.6	0.3	84
Voltage	Un 2000V.DC Us 3000V Ur 600V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
1000	340	125	245	12	12.0	150	0.95	0.7	22.4
1500	340	125	350	10	15.0	180	0.72	0.6	31.2
2000	420	125	360	10	20.0	200	0.72	0.5	39.2
2400	420	125	430	9	21.6	200	0.66	0.6	44.8
3200	340	235	350	10	32.0	250	0.8	0.3	46.4
4000	420	235	360	10	40.0	280	0.7	0.3	58.4
4800	420	235	430	9	43.2	300	0.6	0.3	67.2
Voltage	Un 2200V.DC Us 3300V Ur 600V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms (A)max	ESR (mΩ)	Rth (K/W)	Weight （Kg）
2000	420	235	245	12	24	150	0.9	0.740740741	40
2750	420	235	300	10	27.5	200	0.8	0.46875	49.6
3500	420	235	360	10	35	200	0.7	0.535714286	58.4
Voltage	Un 3000V.DC Us 4500V Ur 800V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms (A)max	ESR (mΩ)	Rth (K/W)	Weight （Kg）
1050	420	235	245	20	21	150	0.9	0.740740741	40
1400	420	235	300	15	21	200	0.8	0.46875	49.6
1800	420	235	360	15	27	200	0.7	0.535714286	58.4
Voltage	Un 4000V.DC Us 6000V Ur 1000V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms (A)max	ESR (mΩ)	Rth (K/W)	Weight （Kg）
600	420	235	245	20	12	150	0.9	0.740740741	40
800	420	235	300	20	16	200	0.8	0.46875	49.6
1000	420	235	360	20	20	200	0.7	0.535714286	58.4
Voltage	Un 2800V.DC Us 4200V Ur 800V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
2×1000	560	190	310	20	2×20	2×350	1	0.2	60
Voltage	Un 3200V.DC Us 4800V Ur 900V
Cn (μF)	W (mm)	T (mm)	H (mm)	dv/dt (V/μS)	Ip (KA)	Irms(A)50℃@10KHz	ESR (mΩ) @1KHz	Rth (K/W)	Weight （Kg）
2×1200	340	175	950	15	2×18	2×200	1.0	0.5	95

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Ac Capacitor In Power Electronic