BFMM PV Photovoltaic DC Circuit Breakers

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BFMM8-PV Photovoltaic DC Circuit Breakers

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BEMM8-PV series photovoltaic DC circuit breakers are applicable to DC power grid circuits with rated voltage up to DC1oooV and rated current up to 1250A.DC circuit breaker has the functions of overload long-time delay protection and short- circuit instantaneous protection. which is used to distribute electric energy and protect lines and power supply equipment from overload and shot circuit and other faults. The operating mechanism of DC circuit breaker has the functions of fast closing and fast breaking, with compact structure,small volume and convenient use.

Model And Meaning

①Note: operating voltage of electric operating mechanism:AC110V、AC220v、DC24V、DC110V、DC220V。 ② Note: the shell frame grade of Y2 and Y2B > 40oA is not applicable to internal links.

Normal Operating Conditions

if the altitude is 2ooom or below, it needs to be reduced for use if it is higher than 2ooom. Please contact the manufacturer for other special requirements;
be able to withstand the influence of humid air (three prevention type) ①;
be able to withstand the influence of salt mist and oil mist (three prevention type);
be able to withstand the influence of mold (three prevention type);
in the medium without explosion hazard, and the medium is not enough to corrode metal and damage insulation
where gas and conductive dust are.
Note: ① for three prevention products, please indicate th.

Use And Maintenance

Various characteristics and accessories of the circuit breaker are set by the manufacturer and cannot be adjusted at will in use. Under the condition that the user abides by the storage and use conditions, no more than 18 months from the date of delivery by the manufacturer The seal of the road device is intact. If the product is damaged or cannot be used normally due to manufacturing quality problems, the manufacturer is responsible for replacing and repairing it free of charge.

Accessories Code

Attachment name	No enclosure	call the policecontact	Shunt de excitation Buckle	auxiliary contact	Undervoltage release	Auxiliary contact of shunt release	Undervoltage release shunt release	Two sets of auxiliary contacts
代号	00	08	10	20	30	40	50	60
Attachment name	Auxiliary contact of undervoltage release	Alarm contact of shunt release	Auxiliary contact alarm contact	Alarm contact of undervoltage release	Auxiliary contact alarm contact of shunt release	Two sets of auxiliary contacts and alarm contacts	Auxiliary contact undervoltage release alarm contact
代号	70	18	28	38	48	68	78

Electrical Technical Parameters

Model		BFMM8-125PV	BFMM8-250PV	BFMM8-400PV	BFMM8-630PV	BFMM8-800PV	BFMM8-1250PV
Rated continuous current Tnm		125	250	400	630	800	1250
Rated currentIn(A)		20,25,32,40， 50,63,80,100,125	125,140,160,180， 200,225,250	250,315,350,400	400,500,630	630,700,800	800,1000, 1250
Rated working voltage Ue(V)DC		250V,500V, 750V,1000V	500V, 750V,1000V	500V,780V,1000V	500V,750V, 1000V	500V,750V, 1000V	500V,750V, 1000V
Rated insulation voltage Ui (V)		1000V	1000V	1500V	1500V	1500V	1500V
Rated impulse withstand voltage Uimp(kV)		8KV	8KV	8KV	8KV	8KV	8KV
Test pressure for one minute(V)		3550	3550	3550	3550	3550	3550
Ultimate short circuit breaking capacity(kA)Icu (Ics=75%lcu)	250V	20	20	35	35	50	50
	500V	20	20	35	35	50	50
	750V	20	20	35	35	50	50
	100OV	20	20	35	35	50	50
Mechanical life	Total times	7000	7000	4000	4000	2500	2000
Electrical life	Total times	2000	2000	1000	1000	800	600
Total breaking time (MS)		20	20	20	20	20	20
Installation position		Anywhere
Whether it has isolation characteristics		Yes
standard		IEC60947-2、IEC60947-1、GB14048.1、GB14048.2
Allowable ambient temperature (C)		-25℃~+50℃
Degree of protection		IP20
With accessories		Auxiliary, alarm, shunt, manual operation, electric operation, machine interlocking
Arcing distance (mm)		≥50
Instantaneous action value		12In
Installation mode		Fixed, plug-in

Classification

According to the operation mode:	according to the form of protection:	According to the wiring form:
Body direct operation:	Line protection;	Front panel wiring:
Operation of electric operating mechanism:	Line isolation	Wiring behind the board:
Rotate the handle for operation.		Plug in wiring;
		Draw out wiring (shell rack level current > 400A).

Wiring Method

Grounding type	Single pole grounding system		Ungrounded system
Circuit diagram
Fault effect	Fault A	Maximum short circuit currentlsc	Fault A	No effect
	Fault B	Maximum short circuit currentlsc	Fault B	Maximum short circuit currentlsc
	Fault C	No effect	Fault C	No effect
≤ DC500V	Note: 1. Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example		Note: 1. Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example to ensure that there will be no secondary grounding fault in the installation mode
DC500~750V	Note: 1.Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example		Note: 1. Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example to ensure that there will be no secondary grounding fault in the installation mode
DC750-1000V-1200V	Note: 1. Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example		Note: 1. Both upper and lower incoming lines can be used. Here, the following incoming lines are taken as an example to ensure that there will be no secondary grounding fault in the installation mode

Inter pole series technology: it can bear higher voltage, and series accessories can reduce the temperature rise caused by inter pole series.
Inter pole parallel technology: balance the current flowing through each pole and can bear 2, 3 and 4 times the rated current.

Action Characteristic Curve

Outline And Installation Dimension Drawing

Model	A	B	ΦC	L	W	C	D	G	I	W1	E	F	ФD	H	H1	H2	H3	H4
BFMM8-125PV	30	129	4.5	150	122	91	64	18	131	30	57	24	8	97	107	28	89.5	83
BFMM8-250PV	35	127	4.5	166	142	95	96	23	146	35	57	24	8	97	107	28	89.5	83
BFMM8-400PV	44	195	7	259	199	173	128	30	228	44	89	65	10	108	153	36	103	99
BFMM8-630PV	58	236	7	270	243	184	134	43	235	58	89	65	12	112	158	40	109	104
BFMM8-800PV	70	243	7	280	272	205	155	46	243	70	105	66	12	108	158	32	103	99

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BFMM8-PV Photovoltaic DC Circuit Breakers

Product Categories

Model And Meaning

Normal Operating Conditions

Use And Maintenance

Accessories Code

Electrical Technical Parameters

Classification

Wiring Method

Action Characteristic Curve

Outline And Installation Dimension Drawing

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