POWER Capacitor
BSMJ Shunt Capacitor of Self-healing

General Description

The low voltage shunt capacitor of self--healing produced by ourcompany has applied the Zn-Al complex metalized film, which is themost advanced in our country at present. It also adopts theadvanced foreign production technology and techniques as well as the leading-edge equipment from Japan and Korea. This kind of capacitor is produced strictly according to the international GB/T12747-2004 and the international atandard of IEC60831-1(1996). It is mainly used for enhancing the power factor of the network, reducing the reactive loss and improving the voltage quality.

Using Conditions

Indor use only
▷Temperature range: -25℃~50
▷Humidity RH: <85
▷Caltitude:<2000m

Installation places: No harmless gas and steamed gas; no inductive and explosive dust; no violent vibration.

Ventilation and heat emission: When more than two capacitors are mounted, the mounting gap shall be largerthan 30mm. Further more, some effective measures for heatemission shall be taken during hotter times in summer.

Features

 1. Small volume, light weight: its volume and weight are only 1/4 or 1/5 of the previous products.

 2. Low loss: the angle tangent value of the actual loss is lessthan 0.01%, which contributes to the low energy consumption for the capacitor it self, little heat and small temperature rise. Therefore, its service life is longer and the energy conservation effect is better.

 ▷3. Excellent self-healing performance: When a part of theissolation is punctured through due to the over voltage, the product is capable of quick self-healing, which makes it continue to work as usual, thus the reliability is greatly improved.

 ▷4. Safety: it is equipped with self--discharging resistant and safety devices inside. The inner self-discharging resistant can discharge the attached electric power with in the capacitor, so that the safety device can cut off the electricity supply in time once there is something wrong with the capacitor. Consequently, the malfunction is hindered from further development and the usage safety is ensured.

 ▷5. No oil leakage: the capacitor has applied advanced half-solid soak materials whose melting point is higher than 70℃. this kind of material is environmentally friendly, which avoids pollution. Further more,the capacitor will not lose efficacy because of oil leakage either.

Technical parameters
Rated voltage
230VAC 250VAC 400VAC 525VAC 690VAC 750VAC 1140VAC
Rated capacifance
1~60kvar
Capacitance tolerance
-5~+10%
Tangent of the loss angle
≤0.15%
Inter-dynode voltage limit
2.15Un.2s
Voltage limit between electrode shells
3KV(AC)10s & 3.6KV(AC)2s
Insulation
500VDC among the phases 1 min more than 100M
Max allowabel voltage
110% of rated voltage
Max allowable current
130% of rated voltage
Self-discharging characteristic
Within 3 min after switching off the power supply, the rest voltage drops to 50V or below
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BSMJ Slit-phase shunt Capacitor of Self-healing

General Description

With the development of reactive compensation technology, we can apply the method of respective three--phase switching of the capacitor as for the three-phase unbalanced load, which means to compensate the reactive power by split phase. In this way, the accuracy of the compensation would be higher and the electricity-saving result would be better. It compensates the shut capacitor by split-phase. As the shell of the capacitor is designed without the neutral point to lead out the connecting terminals, the split phase switching of the capacitor can be conveniently achieved.

▷As to the main features, technical indexes, using conditions, appearance and installation size of the product, please refer to the relevant conditions and parameters of low-voltage shunt capacitor of BSMJ series manufactured by our company.

Structure and Connection

▷1. Three single-phase capacitors should be connected like Y, with the neutral point introducing out(mark N end), thus three single-phase capacitors are composed. The AN, BN and CN are independent units during operation.

▷2. Each independent unit is connected with dischargeresistance respectively.

▷3. Each of the independent units is connected with overvoltage buffer so that they can be cut off immediately if there is any damage.

Note: the three single-phase capacitor with independent units is also suitable for the split-phase compensation. It is small and convenient, which is deeply appreciated by the users.

Note: other products with special models will be supplied according to the users. requirements.
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DFMJ Columniform Capacitor of Self-healing


1. The rated voltage of the capacitor should be in accordance with the actual net voltage,and the increased voltage resulted from the capacitor should be taken into consideration.Usually,the actual net voltage would be much higher than the norinal voltage.If the voltage is too low,the service life of the capacitor would be greatly reduced.But it is not higher,the better because the output of the capacitor will be enormously lower down if the high voltage is chosen while the actual voltage is relatively low.

2. Do not test the capacitor is qualified or not by measuring the current. You should measure the capacitance of the capacitor.Three-phase
capacitor:the actual measured capacitance between any two ends should be half of the total capacitance,which is marked on the capacitor with the error between -5and 10%.Single-phase capacitor:the actual measured capacitance between the two ends should be equal to the total capacitance with the error between -5and 10%

3. If the capacitor is used in places of large harmonic wave,some measures of inhibiting the harmonic wave should be adopted,or the harmonic wave may become larger and may become large and may even cause resonance because of the capacitor,which would endanger the safety of the network and cause the damage to the capacitor.We can hardly see capacitors working without  a series reactor of inhibiting harmonic wave aboard.Compared with the aluminum pole capacitor,the metalized capacitor are more likely to be damaged if being used without the method of inhibiting  harmonic wave.

Designed into column type and mini structure,this product can be installed in any direction.Providing strengthened safety protection,reinforced connection terminals and reactive compensation device parts,it is the first rank product that is more suitable for the power grid.
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