ENTES Electric Co., Ltd.

Reactive power compensation switching switch

Special Contactor for Capacitor Matching
MC series
Summary
MC contactor is specially designed for switching capacitors. It is equipped with advanced closed contacts. First, the auxiliary contacts guide current through the series of advanced closed contacts to ensure that the input current is within acceptable range. This stage takes 2-10 Ms. Then the main contact closure contacts connect the capacitor to the circuit completely, and the auxiliary contacts are automatically disconnected (the over-current intensity of 2.5 and 5 kV Ar models is ensured by special strengthening contact material).

●Auxiliary contact block
●Three-phase connection
●Possible capacitor connection up to 60 kvar,
●Coil voltage: 220-230VAC 50/60 Hz
●Compliance with IEC-497 Standard
●Long electrical life
●UL certification (12, 16, 20 and 25 kvar models)

Advantage
●Long service life of contactor
●Reduction of Reactive Power Faults Caused by Contactor
Faults (Compensation Faults)
●Reduction of capacitor failures
●Avoiding Voltage Fluctuation and Improving Power Quality
●Reduced maintenance intervals for unexpected failures and compensation systems.
●Reduction of loss in facility production.

MC series

Product model	Maximum Operating Power（kvar）			Rated current（A）	Capacitor Unit Model
Product model	220~240V	400~450V	500~550V	Rated current（A）	Capacitor Unit Model
MC-9b	5kvar 13A	9.7kvar 14A	14kvar 16A	21.6A	AC-9
MC-12b	6.7kvar 18A	12.5kvar 18A	18kvar 21A	28.4A	AC-9
MC-18b	8.5kvar 22A	16.7kvar 24A	24kvar 30A	37.8A	AC-9
MC-25b	10kvar 26A	18kvar 26A	26kvar 30A	40.5A	AC-9
MC-32a	15kvar 39A	25kvar 36A	36kvar 42A	56.1A	AC-9
MC-40a	20kvar 52A	33.3kvar 48A	48kvar 55A	74.8A	AC-9
MC-50a	20kvar 52A	40kvar 58A	58kvar 67A	90.4A	AC-50
MC-65a	25kvar 66A	45.7kvar 66A	66kvar 76A	102.9A	AC-50
MC-75a	29.7kvar 78A	54kvar 78A	78kvar 90A	121.6A	AC-50
MC-85a	35kvar 92A	60kvar 87A	92kvar 106A	143.4A	AC-50
MC-100a	37kvar 97A	62kvar 89A	94kvar 109A	146.5A	AC-50
Note: When the switch is switched on, it must be discharged first (the maximum residual voltage of the terminal is less than or equal to 50V) to prevent short circuit. The current of the gG fuse must be 1.5~2 times of the rated current.

Thyristor switch
SC-225 / SC-325 / SC-250 / SC-350

Summary
SC series dynamic switching contactors are used in systems with rapidly changing loads. After using SC series dynamic contactors, the switching time of capacitors used to provide capacitive power to the system is less than 20 ms (1 cycle), which can bring more effective compensation for switching load quickly, such as flat head welder, crane and arc furnace.

●Response time is less than 20 ms
●Reactor heat input
●Thermal protection
●Warning LED
●Long service life
●Easy installation
●Work quietly
●Flip-flop with RS-485 and DC voltage
●Flip-off characteristic of capacitor when voltage is higher than Vmax. Radiator design allows continuous operation at higher loads and higher temperatures
●FFT ensures high reliability in high harmonic environment

Technical characteristics
●Working voltage 480/690V
●Maximum power 25/50 KVAr
●Frequency 45/60 Hz
●Triggering 5-30VDC
●Working temperature - 10 C, +55 C.
●Storage temperature - 10 C, +75 C.
●Humidity 95%
●Shell Protection Level IP-00
●Standard EN 60947-1
●Dimensions: 275.7 mm x 140 mm X 212.1 mm

	25 KVA	50 KVA
Two Tristors make up a triangle(400V)	SC-225	SC-250
Three Tristors form a star(690V)	SC-325	SC-350
It is suggested that these products be used in ENT. SPD series overload protection devices.