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Product profile

Capacitor Structure

Both single phase capacitor and three phase capacitor are characterized by long service life and reliable performance.

The medium voltage capacitor is composed of many capacitor cells, which are connected in series or in parallel into several tanks to obtain the required rated voltage and capacity of signal capacitor.

- Rated voltage of the capacitor depends on the number of the capacitor tanks connected in series.

- Rated capacity of the capacitor depends on the number of capacitors connected in parallel in each tank.

Each capacitor cell is composed of the electrode formed by two aluminum foils and the insulation part formed by high-quality special PP film (for easy dipping). The wired capacitor assembly (called "capacitor packet") is placed in the stainless steel housing and installed to connect the insulating porcelain bushing or terminal of the secondary equipment. After drying treatment and surface treatment, the capacitor packet is injected with the liquid insulating medium of the following characteristics under vacuum conditions:

- Achloride

- Non-toxic

- Biodegradable

This liquid insulating medium has extremely high chemical stability, extremely high gas absorption and partial discharge resistance and the flash point approximately 150 °C. The liquid insulating medium and the solid insulating medium of PP film jointly guarantee full insulation performance between electrodes. This "full film" technology has the following main characteristics:

- Extremely high resistance to strong electric field

- Low power consumption, especially large-power capacitor component

Compared with the previous generation of capacitor with hybrid (paper + film) insulating medium, the capacitor with full film dielectric has longer service life, because:

- Due to lack of paper medium, the heat stability is improved and the loss is reduced

- The chemical stability of the liquid insulating medium is guaranteed

High partial discharge resistance

High insulating medium impedance and small changes in transient overcurrent, voltage and capacitance with temperature

major advantage；principal advantage

	has extremely high chemical stability
	With a longer service life
	High partial discharge resistance

Technical parameters

Electrical characteristics of capacitor

Rated voltage	1~22kV (single-phase capacitor) 1 ~ 13,8 kV (three-phase capacitor)
Rated capacity	1~900kvar
Capacitive reactance error	-5 % ~ +10 % single capacitor or capacitor tank capacity 3Mvar 0 % ~ +10 % capacitor tank capacity between 3 and 30 Mvar 0 % ~ +5 % capacitor tank capacity greater than 30 Mvar
Rated frequency	50Hz
Loss	＜0.15W/kvar ＜0.10W/kvar, after running for 500h at rated frequency and voltage
Insulating material	Biodegradable oil (no PCB-PCT)
Discharging device	Internal discharging device, voltage fall to below 75V within 10min according to international standard; Or voltage fall to below 50V within 5min according to the requirements.

Capacitor running environment

Allowable running overvoltage	Un	Continuous operation
	1,1 Un	Run up to 12h within 24h
	1,15 Un	Run up to 30min within 24h
	1,2 Un	5min
	1,3 Un	1min
Highest transient voltage	≤ 2* √2Un
Maximum output capacity	1,35 Qn
Highest transient current	100 In
Maximum transient duration	0.5 cycle
Transient frequency	1000/year
Grid harmonic current	Imax ≤ 1,3 In
Temperature grade	Maximum 24h 1 year A +40 °C +30 °C +20 °C B +45 °C +35 °C +25 °C C +50 °C +40 °C +30 °C D +55 °C +45 °C +35 °C
Altitude	1000m

Structure features

Specification modelSpecification and model * Dimensional change is not subject to prior notice and is subject to the product delivered actually. For more detailed technical data, call Bogmating.

● Main specifications of 6KV single-phase capacitor

Apply to the reactive compensation device with reactance ratio of 6% Un=6.6/√3 KV, overcurrent capacity 1.81n

Capacitor capacity (kvar)	Model	Boundary dimensions (mm)				System voltage (KV)
Capacitor capacity (kvar)	Model	Box width W	Box height h	Joint hinge D	Porcelain bottle height t	System voltage (KV)
50	BGMD-LC50-H1-4.15/204	145	210	80	305	10
67	BGMD-LC67-H1-4.15/204	145	240	80	305	10
100	BGMD-LC100-H1-4.15/204	145	310	135	305	10
134	BGMD-LC134-H1-4.15/204	145	380	135	305	10
150	BGMD-LC150-H1-4.15/204	145	420	135	305	10
167	BGMD-LC167-H1-4.15/204	145	450	135	305	10
200	BGMD-LC200-H1-4.15/204	145	550	135	305	10
250	BGMD-LC250-H1-4.15/204	145	620	135	305	10
300	BGMD-LC300-H1-4.15/204	145	660	135	305	10
334	BGMD-LC334-H1-4.15/204	145	680	135	305	10
350	BGMD-LC350-H1-4.15/204	145	705	135	305	10
400	BGMD-LC400-H1-4.15/204	145	795	135	305	10
450	BGMD-LC450-H1-4.15/204	145	810	135	305	10
500	BGMD-LC500-H1-4.15/204	145	820	135	305	10

● Main specifications of 10KV single-phase capacitor

Apply to the reactive compensation device with reactance ratio of 6% Un=11/√3 KV, overcurrent capacity 1.81n

Capacitor capacity (kvar)	Model	Boundary dimensions (mm)				System voltage (KV)
Capacitor capacity (kvar)	Model	Box width W	Box height h	Joint hinge D	Porcelain bottle height t	System voltage (KV)
50	BGMD-LC50-H1-6.93/204	145	210	80	305	10
67	BGMD-LC67-H1-6.93/204	145	240	80	305	10
100	BGMD-LC100-H1-6.93/204	145	310	135	305	10
134	BGMD-LC134-H1-6.93/204	145	380	135	305	10
150	BGMD-LC150-H1-6.93/204	145	420	135	305	10
167	BGMD-LC167-H1-6.93/204	145	450	135	305	10
200	BGMD-LC200-H1-6.93/204	145	550	135	305	10
250	BGMD-LC250-H1-6.93/204	145	620	135	305	10
300	BGMD-LC300-H1-6.93/204	145	660	135	305	10
334	BGMD-LC334-H1-6.93/204	145	680	135	305	10
350	BGMD-LC350-H1-6.93/204	145	705	135	305	10
400	BGMD-LC400-H1-6.93/204	145	795	135	305	10
450	BGMD-LC450-H1-6.93/204	145	810	135	305	10
500	BGMD-LC500-H1-6.93/204	145	820	135	305	10