Bk-2kVA 3kVA 5kVA Single Phase Low Voltage 440V to 220V Step Down Control Transformer for Machine Tools

Product Description

General

SBK series three-phase dry-type transformer, suitable for AC 50 ~ 60Hz, input voltage does not exceed 1000V in the circuit, as a variety of machine tools, mechanical equipment and other general electrical control power, local lighting and indicating power, can also be used as a small power Power supply

Structure

SG and SBK series three-phase dry-type transformers can be made into open or protective type, with the advantages of low loss, low noise, good fire performance and no pollution to the environment. Transformers are divided into control transformers and lighting transformers according to the purpose of the products; control transformers are fixed transformers; lighting transformers are portable transformers except for lighting transformers for machine tools. The iron core of the transformer is made of cold-rolled silicon steel sheet, and the steel yoke is clamped on both sides by a steel or steel plate and fastened by a screw. According to the structure, the product is divided into two types: open type and protective type. The protective type is made of steel plate into a case, the transformer is inside the case, and there is an inlet and outlet hole outside the case to install the power line. If necessary, increase the voltmeter, ammeter, temperature controller, steering wheel, etc. according to user requirements, in order to move.

Normally Use Condition

Altitude: the altitude of the installation site does not exceed 2000m;
Temperature: the ambient air temperature does not exceed +40, and the average temperature within 24 h does not exceed +35, the lower limit of ambient air temperature is -5;
Humidity: When the maximum temperature is +40, the relative humidity of the air does not exceed 50%; at lower temperatures, higher relative humidity can be allowed, for example, 90% at +20; Installed in places where there is no severe vibration or shock vibration; In a non-explosive hazardous medium, where there is no corrosive metal and insulating gas and conductive dust.
Input and output voltage can be customized according to customer needs

Technical Date Sheet

Product name	Dry type transformer
Model	SBK series
Output voltage accuracy	±1%
Voltage change rate	≤1.5%
Output waveform distortion	No distortion (compared to the input waveform)
Insulation class and IP rating	Class F, Class H, and HC are available (normally Class F) IP rating: IP00, IP20, etc.
Work efficiency	≥98%
Frequency	50/60HZ
Connection method	Y/
Overload capacity	Allows to work for more than 1.2 times the rated load for 4 hours (can long-term full load)
Noise	≤35Db
Temperature rise	≤60
Insulation resistance	≥150MΩ
Design life	30 year
Working environment	Temperature:-20 + 45 Humidity:≤95% non-condensing
Workplace	No corrosive gas and conductive dust
Safety standards	VDE0550. IEC439. JB5555. GB226
Cooling method	Dry air cooling

Product Description

FAQ

Q 1. What's the payment term?

A. We accept TT,30% deposit and 70% balance against copy of BL.

 

Q 2. How's the delivery time ?

A.Usually it will take about 7-20 days for production. For sample usually in 1 week.

 

Q 3. Tell me the standard of package?

A. For the small capacity, color box as inner package and carton as delivery package. For big capacity, use strong wooden case for protection.

 

Q 4. What kind of material of transformer?

A. For servo type transformer, we have two types, one 100% copper and the other is copper with aluminum. It depends on your requirement . In fact, those two have no difference if normal work well. Only except the long life. Copper is better and also higher price. For relay type transformer, we use toroidal coils, the material is aluminum. comparing with square coils, toroidal coils with high efficiency.

 

Q 5.Could you offer Form A or C/O ?

A. It's totally not a problem. We can prepare relative documents to foreign affairs office or other offices to apply for this certificate.

 

Q 6.Would you accept to use our logo ?

A.Our logo is ZX. If your order, has good quantity, it's absolutely no problem to do OEM. But if you use our logo ZX, it will be high appreciated.

 

Q 7.We want to know month capacity.

A. It depends on which model. For example for relay type small capacity , month capacity can reach near 10000pcs and big capacity near 2000pcs.

 

Q 8.Where is your market?

A. Our products are popular in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid
East, Eastern Asia, Western Europe and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefits from our cooperation.

 

Q 9. What kind of certificate you have ?

A. Our company already obtained CE , ISO9001, PCT, SGS. design and technical patents certificates.