OEM High-Efficiency JBK3 Series Machine Tool Control Transformers - China Suppliers & Factory with Pure Copper Coils Manufacturers, Companies

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OEM High-Efficiency JBK3 Series Machine Tool Control Transformers - China Suppliers & Factory with Pure Copper Coils Manufacturers, Companies

The JBK3 series machine tool control transformers, manufactured in China, utilize pure oxygen-free copper coils that are coated with a double-layer insulating varnish. These high-performance transformers are designed to minimize wire loss and provide exceptional resistance to oxidation, ensuring a long operational lifespan. Thanks to advanced manufacturing processes and high magnetic permeability, these transformers exhibit conversion efficiency that surpasses national standards, placing them at an internationally leading level. Ideal for use in 50–60 Hz AC circuits, they serve as reliable control power supplies for machine tools, mechanical equipment, work lighting, and signal lamps. As a trusted supplier in the industry, our factory is committed to delivering top-quality transformers that meet the diverse needs of our customers

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Product Description

Type Designation

1	Machine tool transformer
2	Control
3	Design serial number
4	Rated capacity (VA)

1	Single-phase
2	Control
3	Design serial number
4	Rated capacity (VA)

Operating Conditions

Ambient air temperature: -5°C to +40°C, average not exceeding +35°C over 24 hours.
Installation altitude not exceeding 2000 meters.
Relative humidity: ≤50% at +40°C; higher humidity allowed at lower temperatures.
Maximum monthly average humidity: 90% with average minimum temperature of +25°C.
Free from severe vibration and mechanical shock.
Protected from rain and snow.
Supply voltage waveform approximately sinusoidal.

Product Display

JBK3 series machine tool control transformers back

Technical Parameters

Parameter	Value
Efficiency	≥95%
Insulation Resistance	≥20 MΩ
Overload Capacity	2x rated current for 1 minute
Dielectric Strength	2000V AC for 1 minute (no breakdown/flashover)
Insulation Class	Class B (130°C), F (155°C), H (180°C)
Noise	≤55 dB
Ambient Temperature	-15°C to +40°C
Max Average Monthly Temp	≤35°C
Installation Altitude	<1000m

External Dimensions and Installation Dimensions

JBK3 Series Control Transformers Dimensions

Model	Bmax	Dmax	Emax	Mounting Hole Spacing		Mounting Hole K or K×J	Fmax
Model	Bmax	Dmax	Emax	A	C	Mounting Hole K or K×J	Fmax
JBK3-40/63VA	78	75	89	56±0.4	51±2	4.8×9	12
JBK3-100VA	85	90	91	64±0.4	68±2	4.8×9	12
JBK3-160VA	96	97	105	84±0.4	73±2	5.8×11	14
JBK3-250VA	96	105	105	84±0.4	85±2	5.8×11	14
JBK3-400VA	120	105	123	103±0.4	82±2	7×12	18
JBK3-630VA	150	105	145	128±0.5	86±2	7×12	22
JBK3-1000VA	160	195	145	140±2	158±2	7×12	18
JBK3-1600VA	180	225	155	155±2	180±2	7×12	18
JBK3-2500VA	200	250	171	165±2	210±2	7×12	18

Frequently Asked Questions

Q1: What is the JBK3 Series Control Transformer used for?

The JBK3 Series is a machine tool control transformer designed to provide stable, isolated voltage for control circuits in CNC machines, lathes, milling machines, and other industrial equipment. It supports single-phase operation and is available in rated capacities from 40VA to 2500VA.

Q2: What insulation classes are available for the JBK3 transformer?

The JBK3 Series is available in three insulation classes: Class B (rated up to 130°C), Class F (rated up to 155°C), and Class H (rated up to 180°C), allowing selection based on the thermal demands of the application environment.

Q3: What are the installation altitude requirements for the JBK3 transformer?

According to the technical parameters, the JBK3 Series transformer should be installed at altitudes below 1000 meters to ensure optimal performance and safe operation. The operating conditions section notes a maximum installation altitude of 2000 meters under specified conditions.

Q4: What is the dielectric strength of the JBK3 Series transformer?

The JBK3 Series transformer has a dielectric strength of 2000V AC applied for 1 minute with no breakdown or flashover, ensuring high electrical safety and reliable insulation performance in industrial environments.

Q5: Can the JBK3 transformer handle overload conditions?

Yes, the JBK3 Series is capable of handling overload conditions. It can withstand 2 times the rated current for up to 1 minute, providing a safety margin during temporary current surges in machine tool control circuits.

Q6: What environmental conditions are required for the JBK3 transformer?

The JBK3 transformer requires an ambient temperature between -5°C and +40°C, relative humidity not exceeding 50% at 40°C, protection from rain, snow, and severe mechanical vibration, and an approximately sinusoidal supply voltage waveform for reliable operation.

OEM High-Efficiency JBK3 Series Machine Tool Control Transformers - China Suppliers & Factory with Pure Copper Coils Manufacturers, Companies

Product Description

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