Product overview

GGJ low-voltage reactive power compensation cabinet is specially designed for the actual situation of the power grid. It adopts intelligent control technology, which effectively solves the problem of automatic switching reactive power compensation of parallel capacitors under harmonic conditions on the one hand, and can filter harmonics according to the actual requirements of users, clean the grid environment, reduce losses and eliminate harmonic hazards on the other hand; It also provides capacitive reactive power to the system to improve the power factor. It can be used in power distribution systems of electric power, metallurgy, petrochemical, industrial and mining enterprises, construction, machinery and other industries.

Model and meaning

Environmental conditions

● Altitude: 2000m;

● Ambient temperature: – 25~+40℃;

● Relative humidity: no more than 90% (20°C );

● The installation site shall be free of flammable and explosive materials, corrosive gas and conductive dust;

● There shall be no violent vibration and turbulence, and the installation gradient shall not be greater than 5 degrees;

Structure introduction

● Voltage zero crossing switching compensation device, which can realize no inrush current and impact, and can switch capacitors frequently and quickly;

● Fast response, fast tracking of reactive power change of system load, real-time dynamic or static response switching;

● Capacitor automatic/manual switching device is adopted, which can be operated frequently to improve compensation accuracy;

● The top of the cabinet is equipped with a cooling fan, which is controlled by a temperature control switch to adjust the temperature in the cabinet at the right time;

● Complete protection functions: short circuit, overload, overvoltage, undervoltage, phase loss protection, easy set.

Technical parameter

● Rated voltage: 400V, 660V, 1000V;

● Rated frequency: 50Hz;

● Rated capacity: 30-1000var;

● Operating voltage range: 0.8-1.1 Un;

● Capacitor wiring mode: Y or △;

● Measurement error: voltage: ±0.5%, current: ±1%, reactive power: ±1%;

● Switching mode: automatic switching according to harmonic voltage or power factor;

● Switching delay: 0-999s adjustable

Local compensation calculation of motor and determination of required capacitance
	Before compensation	Kilovar number of capacitors required per kilowatt load to obtain the required COSφ 2
tanφ1	cosφ1	cosφ2=0.7	cosφ2=0.75	cosφ2=0.8	cosφ2=0.82	cosφ2=0.85	cosφ2=0.87	cosφ2=0.9	cosφ2=0.92	cosφ2=0.95	cosφ2=0.97	cosφ2=1.00
4.9	0.2	3.88	4.02	4.15	4.2	4.28	4.33	4.41	4.57	4.57	4.65	4.9
3.87	0.25	2.85	2.99	3.12	3.17	3.25	3.31	3.39	3.45	3.54	3.62	3.87
3.18	0.3	2.16	2.3	2.43	2.48	2.56	2.61	2.7	2.75	2.85	2.93	3.18
2.68	0.35	1.66	1.79	1.93	1.98	2.06	2.11	2.19	2.25	2.35	2.43	2.68
2.29	0.4	1.27	1.41	1.54	1.59	1.67	1.72	1.81	1.87	1.96	2.04	2.29
2.16	0.42	1.14	1.28	1.41	1.46	1.54	1.59	1.68	1.74	1.83	1.91	2.16
2.04	0.44	1.02	1.16	1.29	134	1.42	1.47	1.56	1.62	1.71	1.79	2.04
1.93	0.46	0.91	1.05	1.18	1.23	1.31	1.36	1.45	1.5	1.6	1.68	1.93
1.83	0.48	0.81	0.95	1.08	1.13	1.21	1.26	1.34	1.4	1.5	1.58	1.83
1.73	0.5	0.71	0.85	0.98	1.03	1.11	1.17	1.25	1.31	1.4	1.48	1.73
1.64	0.52	0.62	0.76	0.89	0.94	1.02	1.08	1.16	1.22	1.31	1.39	1.64
1.56	0.54	0.54	0.68	0.81	0.86	0.94	0.99	1.07	1.13	1.23	1.31	1.56
1.48	0.56	0.46	0.6	0.73	0.78	0.86	0.91	1	1.05	1.15	1.23	1.48
1.4	0.58	0.38	0.52	0.65	0.71	0.78	0.84	0.92	0.98	1.08	1.15	1.4
1.33	0.6	0.31	0.45	0.58	0.64	0.71	0.77	0.85	0.91	1	1.08	1.33
1.27	0.62	0.25	0.38	0.52	0.57	0.65	0.7	0.78	0.84	0.94	1.01	1.27
1.2	0.64	0.18	0.32	0.45	0.5	0.58	0.63	0.72	0.77	0.87	0.95	1.2
1.14	0.66	0.12	0.26	0.39	0.44	0.51	0.57	0.65	0.71	0.81	0.89	1.14
1.08	0.68	0.06	0.2	0.33	0.38	0.46	0.51	0.59	0.65	0.75	0.83	1.08
1.02	0.7		0.14	0.27	0.32	0.4	0.45	0.54	0.59	0.69	0.77	1.02
0.96	0.72		0.08	0.21	0.27	0.34	0.4	0.48	0.54	0.63	0.71	0.96
0.91	0.74		0.03	0.16	0.21	0.29	0.34	0.42	0.48	0.58	0.66	0.91
0.86	0.76			0.11	0.16	0.24	0.29	0.37	0.43	0.53	0.6	0.86
0.8	0.78			0.05	0.1	0.18	0.24	0.32	0.38	0.47	0.55	0.8
0.75	0.8				0.05	0.13	0.18	0.27	0.32	0.42	0.5	0.75
0.7	0.82					0.08	0.13	0.21	0.27	0.37	0.45	0.7
0.65	0.84					0.03	0.08	0.16	0.22	0.32	0.4	0.65
0.59	0.86						0.03	0.11	0.16	0.26	0.34	0.59
0.84	0.88							0.06	0.11	0.21	0.29	0.54
0.48	0.9								0.06	0.16	0.23	0.48
0.48	0.92									0.1	0.18	0.43
0.36	0.94									0.03	0.11	0.36
0.29	0.96										0.01	0.29
0.2	0.98											0.2

Common configuration table

Solution I: co-compensation options

Capacitance contactor	Capacitance switching compound switch	Self-healing shunt capacitor
CJ19-25	XXFK-△-16KVA	BSMJ0.4-1-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-2-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-3-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-5-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-6-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-7.5-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-8-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-10-3
CJ19-25	XXFK-△-16KVA	BSMJ0.4-12-3
CJ19-32	XXFK-△-16KVA	BSMJ0.4-14-3
CJ19-32	XXFK-△-16KVA	BSMJ0.4-15-3
CJ19-32	XXFK-△-16KVA	BSMJ0.4-16-3
CJ19-43	XXFK-△-20KVA	BSMJ0.4-18-3
CJ19-43	XXFK-△-20KVA	BSMJ0.4-20-3
CJ19-63	XXFK-△-30KVA	BSMJ0.4-25-3
CJ19-63	XXFK-△-30KVA	BSMJ0.4-30-3
CJ19-95		BSMJ0.4-40-3
CJ19-95		BSMJ0.4-50-3

Solution II: separate compensation options

Capacitance contactor	Capacitance switching compound switch	Self-healing shunt capacitor
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-1-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-2-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-3-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-4-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-5-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-6-3Y
CJ19-25	XXFK-Y-7.5KVAX3	BSMJ0.25-7-3Y
CJ19-25	XXFK-Y-10KVAX3	BSMJ0.25-8-3Y
CJ19-25	XXFK-Y-10KVAX3	BSMJ0.25-10-3Y
CJ19-25	XXFK-Y-12KVAX3	BSMJ0.25-12-3Y