110V 220V ODM Single-Phase Power Bk Control Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting
• Phase: Single
• Model NO.: BK
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Auto-transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EI
• Brand: Gk
• Input Voltage: 380V
• Output Voltage: 220V
• Frequency: 50/60Hz
• Winding Material: Copper
• Coil Structure: Toroidal
• Transport Package: Export Standard Packaging
• Specification: 16*15*16CM
• Trademark: GK
• Origin: Wenzhou
• HS Code: 8504319000
• Production Capacity: 1000000meters/Weeks
• Package Size: 16.00cm * 15.00cm * 16.00cm
• Package Gross Weight: 11.500kg

Product Description

Product Description

 

BK series control single phase isolation transformer

Model: BK-40 

BK series control transformer
      The BK series control transformer (hereinafter referred to as the transformer) is suitable for power supply in circuits with AC frequency ranging from 50Hz to 60Hz and voltage up to 500V, used for local lighting in industrial and mining enterprises, power supply for control circuits, and power supply for signal lights and indicator lights in electrical equipment.
      
    This transformer can operate for a long time under rated load. When the primary and secondary windings of this transformer are separated and there is only one winding in the secondary, it bears the full rated capacity of the transformer. If the secondary also has control, lighting, and indicator light windings, they will be wound separately according to the distribution of winding capacity. For transformers with single windings and intermediate taps, the capacity of each intermediate tap is less than the rated capacity of the transformer, and only the maximum voltage output terminal can bear the rated capacity.

• Capacity.............................................................................40VA
• Frequency..........................................................................50/60Hz
• Voltage Combination.......................................................Pls. see selection form.
• Winding Material...............................................................100% Copper
• Terminal Block Connection.............................................Provided
• Metallic Bracket Mounting................................................Provided
• Standards.............................................VDE0550, IEC204-1, IEC61588, EC439
• Sample Service..................................................................Pay to Provide
• Quality Assurance.............................................................24 months
• Item Condition....................................................................Brand-Ne

Product Parameters

Item	Capacity	Voltage Combination	Case Qty.
Model	(VA)	Primary (V)/Secondary (V)	(Pcs)
BK-40	40	440/220;240/24;220/24;220-380/110-60-48-24,380/220-110	24
BK-60	60		24
BK-100	100		16
BK-160	160		12
BK-250	250		6
BK-400	400		6
BK-630	630		4
BK-800	800		4
BK-1000	1000		1
BK-1600	1600		1
BK-2500	2500		1

 

Advantages of Toroidal Transformer:

1. A toroidal transformer weighs about half as much as conventional transformer with the same capacity and heat rise. The main materials used in transformer are copper and steel, both of which are getting scarcer with cost increases as a consequence.

 

2. No impregnation is needed to keep the laminates quiet so this potential environmental hazard is avoided.

 

3. The toroidal transformer fits into a smaller space, which allows chassis plates and enclosures to be smaller with less material used.

 

How to find VA for Transformers

Volt amps (VA) is the effective power rating for a transformer. In the perfect transformer, the voltage and current (combined) applied at the primary will exactly equal the voltage and current (combined) on the secondary(s).

 

Efficiency is measure of a transformer's ability to delivery the input power to the load. Efficiency is expressed as a percent by:

 

% = ( PO / PI ) X 100 (Where: PO = Output power, PI = Input power, % = Efficiency)

 

VA Calculation

1. Read the transformer's secondary winding rating (printed or tagged on the transformer case). This should give a rating such as 5V, 500mA.

Multiply the voltage times the current to receive the VA.

Example: 5V times 500mA (or 0.5A) equals 2.5VA

 

2. Convert the secondary winding VA value to the primary winding VA rating as the equation VA (Primary) equals VA (Secondary) or VA (p) = VA(s)

For example of a 2.5VA secondary, if the primary voltage is 120V the current will be A (p) = VA(s) / V(p). Giving A(p) = 2.5 / 120 = 0.020833 (roughly 21mA).

This is the calculation for a single input winding/single output winding transformer.

 

3. Add the separate VA ratings for a transformer with multiple secondary windings.

For secondary winding 1 = 5VA at 500mA

Secondary winding 2 = 24V at 100mA

Total Secondary VA = ( 5 X 0.5 ) + ( 24 X 0.1 ) = 4.9VA

Primary VA will still equal the total secondary VA. 
 

Model	Overall Dimension (mm)			Mounting Dimension (mm)
	B max	D max	E max	A	C	K
BK-40	78	72	90	56	46	4.6
BK-60	78	72	90	56	46	4.6
BK-100	85	88	96	64	62	4.6
BK-160	96	92	106	84	73.5	5.5
BK-250	96	100	106	84	85	5.8
BK-400	120	100	122	93	84	5.8
BK-630	150	114	140	125	92	7
BK-800	150	125	142	125	105	7
BK-1000	168	130	155	138	105	9
BK-1600	168	140	155	138	116	9
BK-2500	250	200	152	165	210	7

Workshop

 

FAQ

1. who are we?
We are based in Wenzhou, China, start from 2019,sell to Domestic Market(50.00%),South Asia(5.00%),Eastern Asia(5.00%),South America(5.00%),Northern Europe(5.00%),Africa(5.00%),Eastern Europe(5.00%),Mid East(5.00%),Southeast Asia(5.00%),Oceania(4.00%),Southern Europe(3.00%),North America(2.00%),Western Europe(1.00%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Transformer, Voltage Stabilizer, Voltage Regulator, Frequency Converter, UPS

4. why should you buy from us not from other suppliers?
We have 15 years of experience in electric equipments and have implemented a strict and complete quality control system to ensure quality and safety, so we have a good reputation in this field and are favored by domestic and foreign customers.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,MoneyGram,Credit Card,PayPal,Western Union,Cash,Escrow;
Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian