Claire
Mr.Fu
Claire
High-Efficiency JBK3 Series Machine Tool Control Transformers - China Suppliers & Factory with Pure Copper Coils
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
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
| Model | Bmax | Dmax | Emax | Mounting Hole Spacing | Mounting Hole K or K×J | Fmax | |
|---|---|---|---|---|---|---|---|
| A | C | ||||||
| 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.