BSMJ/BKMJ Series Power Capacitors-Xinxiang Shengyuan Electric Co., Ltd.

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Scope of Use

Self-healing low-voltage shunt capacitors are suitable for low-voltage power systems operating at frequencies of 50Hz or 60Hz. They are primarily used to improve power factor, reduce reactive power losses, enhance voltage quality, and maximize transformer capacity. These capacitors are officially endorsed by the government as the optimal energy-saving product for widespread adoption.

Working conditions

After a capacitor is disconnected from the power source, it must be ensured that its residual voltage drops to 10% of the rated voltage before it can be reconnected. Typically, this process takes about 200 seconds, so the controller should have a built-in feature that locks out reconnection for a specified period after disconnection. If a standard controller is used, an additional quick-discharge device must be installed separately. However, this restriction does not apply when using equipotential switching switches. The installation altitude should not exceed 2000 meters. The ambient temperature category is -25°C/Class C, with a minimum temperature of -25°C and a maximum temperature of Class C—no higher than 50°C. Additionally, the average temperature over any 24-hour period must remain below 40°C, while the annual average temperature should not surpass 30°C. Finally, capacitors must always operate in well-ventilated environments; they are strictly prohibited from being used in enclosed, non-ventilated spaces.

Main technical specifications

Rated voltage: 230V, 250V, 400V, 450V, 525V, 690V, 750V, 1050V, 1200V. Other voltages are available upon special order.
Rated capacity: 1–60 kvar for 0.4–0.69 kV; capacities for other voltage levels to be specified separately.
Rated frequency: 50 Hz or 60 Hz.
Capacity tolerance: -5% to ±10%.
Tangent of the loss angle: 60.1% at 20°C.
Withstand Voltage: Between terminals, 2.15 times the rated voltage for 10 seconds; between terminals and case, 2Un + 2kV or 3kV, whichever is higher, for 10 seconds—without any permanent breakdown or flashover.
Maximum allowable overvoltage: Up to 8 hours per 24-hour period when the voltage reaches 1 times the rated voltage; no more than 30 minutes every 24 hours at 1.15 times the rated voltage; not exceeding 5 minutes at 1.2 times the rated voltage; and no more than 1 minute at 1.3 times the voltage.
Maximum allowable current: The current is permitted to operate at no more than 1.3 times the rated current. When accounting for transient overcurrents, overvoltage conditions, positive capacitance deviations, and harmonic effects, the transient overcurrent must not exceed 1.43 times the rated current.

Connection methods include △-connection, Y-star connection, -Y-star connection with neutral point lead-out, III-three-section type, single-phase type, and various other configurations. Additional connection options can be customized based on specific user requirements.
Self-discharge performance: After the capacitor is disconnected from power, the remaining voltage drops from √2Un to below 50V within 3 minutes.

Compliant with standards: GB/T 12747-2004, IEC 60831:2002.

Installation dimensions

Product Category

BSMJ-0.25 Phase Shift

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.25-5-3YN	0.25	5	255	6.7	50	115	Figure 2, Terminal M6
0.25-7.5-3YN	0.25	7.5	382	10	50	180	Figure 2, Terminal M6
0.25-10-3YN	0.25	10	509	13.3	50	180	Figure 2, Terminal M6
0.25-15-3YN	0.25	15	764	20	50	210	Figure: Four-terminal M8
0.25-20-3YN	0.25	20	1019	26.7	50	210	Figure: Four-terminal M8
0.25-25-3YN	0.25	25	1273	33.3	50	250	Figure: Four-terminal M8
0.25-30-3YN	0.25	30	1528	40	50	300	Figure: Four-terminal M8
0.25-40-3YN	0.25	40	2037.18	53.3	50	230	Figure: Three-terminal M8

BSMJ-0.28 Phase-Shifted

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.28-10-3YN	0.28	10	406	20.6	50	180	Figure 2, Terminal M6
0.28-15-3YN	0.28	15	609	30.9	50	210	Figure 2, Terminal M6
0.28-20-3YN	0.28	20	812	23.8	50	210	Figure: Four-terminal M8
0.28-25-3YN	0.28	25	1015	29.8	50	210	Figure: Four-terminal M8
0.28-30-3YN	0.28	30	1218	37.1	50	250	Figure: Four-terminal M8

BSMJ-0.3 Phase-Shifted

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.3-10-3YN	0.3	10	353.7	11.1	50	125	Figure 2, Terminal M6
0.3-15-3YN	0.3	15	530.7	16.7	50	180	Figure 2, Terminal M6
0.3-20-3YN	0.3	20	707.4	22.2	50	210	Figure 2, Terminal M6
0.3-25-3YN	0.3	25	884.4	27.6	50	210	Figure: Four-terminal M8
0.3-30-3YN	0.3	30	1061.1	33.3	50	250	Figure: Four-terminal M8

BSMJ-0.4 Three-phase (Single-phase)

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current Three-phase / Single-phase	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.4-3-3	0.4	3	60	4.3 / 7.5	50	125	Figure 1: Terminal M6
0.4-4-3	0.4	4	80	5.8/10	50	125	Figure 1: Terminal M6
0.4-5-3	0.4	5	99	7.2 / 12.5	50	125	Figure 1: Terminal M6
0.4-6-3	0.4	6	119	8.7/15	50	125	Figure 1: Terminal M6
0.4-8-3	0.4	8	159	11.5/20	50	125	Figure 1: Terminal M6
0.4-10-3	0.4	10	199	14.4 / 25	50	125	Figure 1: Terminal M6
0.4-12-3	0.4	12	239	17.3/30	50	180	Figure 1: Terminal M6
0.4-14-3	0.4	14	279	20.2/35	50	180	Figure 1: Terminal M6
0.4-15-3	0.4	15	298	21.7 / 38	50	180	Figure 1: Terminal M6
0.4-16-3	0.4	16	318	23.1/40	50	180	Figure 1: Terminal M6
0.4-18-3	0.4	18	358	26.0 / 45	50	210	Figure 1: Terminal M6
0.4-20-3	0.4	20	398	28.9/50	50	210	Figure 1: Terminal M6
0.4-22-3	0.4	22	438	31.8 / 55	50	240	Figure 2: Terminal M8
0.4-25-3	0.4	25	497	36.1/63	50	210	Figure 2: Terminal M8
0.4-30-3	0.4	30	597	43.3/75	50	210	Figure 2: Terminal M8
0.4-40-3	0.4	40	796	57.7/100	50	250	Figure 2: Terminal M8
0.4-50-3	0.4	50	995	72.1 / 125	50	300	Figure 2: Terminal M8

BSMJ-0.45 Three-Phase (Single-Phase)

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current Three-phase / Single-phase	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.45-3-3	0.45	3	47	3.8 / 6.7	50	125	Figure 1: Terminal M6
0.45-4-3	0.45	4	62.8	5.1 / 8.9	50	125	Figure 1: Terminal M6
0.45-5-3	0.45	5	78.6	6.4/11.1	50	125	Figure 1: Terminal M6
0.45-6-3	0.45	6	94.3	7.7 / 13.3	50	125	Figure 1: Terminal M6
0.45-8-3	0.45	8	125.7	10.3 / 17.8	50	125	Figure 1: Terminal M6
0.45-10-3	0.45	10	157	12.8 / 22.2	50	125	Figure 1: Terminal M6
0.45-12-3	0.45	12	188.6	15.4 / 26.7	50	180	Figure 1: Terminal M6
0.45-14-3	0.45	14	220	18/31	50	180	Figure 1: Terminal M6
0.45-15-3	0.45	15	235.8	19.3 / 33.3	50	180	Figure 1: Terminal M6
0.45-16-3	0.45	16	251	20.5 / 35.5	50	180	Figure 1: Terminal M6
0.45-18-3	0.45	18	283	23.1/40	50	180	Figure 1: Terminal M6
0.45-20-3	0.45	20	314	25.7 / 44.4	50	210	Figure 1: Terminal M6
0.45-22-3	0.45	22	345	28.2 / 48.9	50	210	Figure 1: Terminal M6
0.45-25-3	0.45	25	393	32.1 / 55.6	50	210	Figure 2: Terminal M8
0.45-30-3	0.45	30	471	38.5/66.7	50	210	Figure 2: Terminal M8
0.45-35-3	0.45	35	550	44.9 / 77.8	50	250	Figure 2: Terminal M8
0.45-40-3	0.45	40	628	51.3 / 88.9	50	250	Figure 2: Terminal M8
0.45-50-3	0.45	50	786	64.1 / 111.1	50	300	Figure 2: Terminal M8

BSMJ-0.48 Three-Phase (Single-Phase)

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current Three-phase / Single-phase	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.48-5-3	0.48	5	69	6.0/10.4	50	125	Figure 1: Terminal M6
0.48-10-3	0.48	10	138	12.0 / 20.8	50	125	Figure 1: Terminal M6
0.48-15-3	0.48	15	207	18.0 / 31.2	50	210	Figure 1: Terminal M6
0.48-18-3	0.48	18	248.7	21.6 / 37.5	50	210	Figure 1: Terminal M6
0.48-20-3	0.48	20	276.3	24/41.7	50	210	Figure 1: Terminal M6
0.48-25-3	0.48	25	345.4	30.7/52.1	50	210	Figure 2: Terminal M8
0.48-30-3	0.48	30	414.5	36.1/62.5	50	210	Figure 2: Terminal M8
0.48-35-3	0.48	35	483.5	42.1 / 72.9	50	250	Figure 2: Terminal M8
0.48-40-3	0.48	40	552.6	48.1 / 83.3	50	250	Figure 2: Terminal M8
0.48-50-3	0.48	50	690.7	60.1 / 104.2	50	300	Figure 2: Terminal M8

BSMJ-0.525 Three-phase (Single-phase)

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current Three-phase / Single-phase	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.525-5-3	0.525	5	58	5.5/10	50	125	Figure 1: Terminal M6
0.525-10-3	0.525	10	115	11.0/19	50	125	Figure 1: Terminal M6
0.525-15-3	0.525	15	173	16.5/29	50	210	Figure 1: Terminal M6
0.525-18-3	0.525	18	208	19.8 divided by 34	50	210	Figure 1: Terminal M6
0.525-20-3	0.525	20	231	22.0 / 38	50	210	Figure 1: Terminal M6
0.525-25-3	0.525	25	289	27.5/48	50	210	Figure 2: Terminal M8
0.525-30-3	0.525	30	346	33.0/57	50	210	Figure 2: Terminal M8
0.525-40-3	0.525	40	462	44.0 / 76	50	250	Figure 2: Terminal M8
0.525-50-3	0.525	50	577	55.0/95	50	300	Figure 2: Terminal M8

BSMJ-0.69 Three-Phase

Product Model	Rated Voltage	Rated Capacity	Rated Capacitor	Rated current Three-phase / Single-phase	Rated Frequency	Height	Drawing Number
BSMJ	KV	Where	μF	A	Hz	H
0.69-10-3	0.69	10	67	8.4	50	180	Figure 1: Terminal M6
0.69-15-3	0.69	15	100	12.6	50	210	Figure 1: Terminal M6
0.69-20-3	0.69	20	134	16.7	50	240	Figure 1: Terminal M6
0.69-25-3	0.69	25	167	20.9	50	210	Figure 2: Terminal M8
0.69-30-3	0.69	30	201	25.1	50	250	Figure 2: Terminal M8