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JBK5 Series Machine Tool Control Transformer

The JBK5 series machine tool control transformers, based on the JBK3 series, feature an optimized terminal structure integrated with the bobbin, achieving IP2LX protection against accidental contact. They use domestic IT crimp terminals for higher wiring density. Argon arc welding connects silicon steel sheets and the base plate, forming a compact structure. The one-piece base plate ensures precise mounting, while corrosion-resistant alloy enhances earthing reliability. Compliant with VDE0550, IEC204-1, EC439, JB5555, and GB5226, they are interchangeable with foreign products. Suitable for AC 50–90Hz, input ≤500V, output ≤220V, they power electrical controls, work lights, and signal lights for industrial machinery.

    Type & Meaning

    JB5 Series-4
    1 Machine Tool Control Transformer
    2 Design Sequence Number
    3 Rated Capacity (VA)
    4 Tropical Product Code:
    - Humid Tropical (TH)
    - Dry Tropical (TA)

    Product Overview

    The JBK5 series machine tool control transformers are developed on the basis of the JBK3 series, with an optimized advanced terminal structure that integrates the terminals with the bobbin, raising the protection degree to IP2LX to prevent accidental contact with live circuits. Domestic IT crimp terminals are adopted, allowing a higher wiring density.
    The connections between silicon steel sheets, and between the silicon steel sheets and the base plate, are all made using argon arc welding, forming a compact, integrated structure. In particular, the one-piece formed base plate ensures more precise mounting dimensions than the JBK3 series; made of high-quality corrosion-resistant alloy, it greatly improves the reliability of earthing performance and overall product quality. The product complies with international and national standards including VDE0550, IEC204-1, EC439, JB5555, and GB5226, and is interchangeable with foreign products.
    The JBK5 series machine tool control transformers are suitable for AC 50~90Hz, with an input voltage not exceeding 500V and an output rated voltage not exceeding 220V. They serve as the general electrical control power supply, as well as the power supply for working lights and signal lights, for mechanical equipment in various industries.

     product Display

    JBK5 Series Control Transformer top
    JBK5 Machine Tool Control Transformer

    Outline and Installation Dimensions

    Outline and Mounting Dimension Drawings 1, 2 and Table 1 of the Transformer

    JBK5 Series Outline & Mounting DimensionsJBK5 Series Outline & Mounting Dimensions-2
    Model Overall Dimensions Mounting Dimensions Mounting Holes (K) Fmax Remarks
    Bmax Dmax Emax A C
    JBK5-40/63VA 78  72  96  56±0.15 46±0.125 4.6  1.5 
    JBK5-100VA 85  88  96  64±0.15 62±0.15 4.6  1.5 
    JBK5-160VA 96  92  106  84±0.175 73.5±0.5 5.5  1.5 
    JBK5-250VA 96  100  106  84±0.175 85±0.175 5.8  1.5 
    JBK5-400VA 120  100  122  93±0.175 84±0.175 5.8 
    JBK5-630VA 150  114  140  125±0.2 92±0.175
    JBK5-800VA 150  125  142  125±0.2 105±0.2
    JBK5-1000VA 160  195  142  140±0.2 158±0.2
    JBK5-1000VA 168  130  155  138±0.2 105±0.2 Horizontal Type
    JBK5-1600VA 184  225  145  155±0.2 180±0.2 Vertical Type
    JBK5-1600VA 168  140  155  138±0.2 116±0.2 Horizontal Type
    JBK5-2500VA 250  200  152  165±0.2 210±0.23 Vertical Type

    Technical Parameters

    The main technical parameters of the transformer are listed in Table 2

    Model Power (%) Signal Winding (%) Control Winding (%) Signal Winding (%) Control Winding (%) Rated Input Voltage (V) Rated Output Voltage (V) Remarks
    JBK5-40VA 80  5<Um≤5
    10<Um≤10
    95%~105%
    UH
    6 or 12 1.1Um AC380
    ±5%


    Ac220
    ±5%

    AC220
    (127)/110
    --Control



    48/35/24
    --Lighting or Control



    12/6
    --Signal

    The capacity allocation of each winding can be manufactured according to user requirements
    JBK5-63VA
    JBK5-100VA
    JBK5-160VA 85 
    JBK5-250VA
    JBK5-400VA
    JBK5-630VA
    JBK5-800VA
    JBK5-1000VA
    JBK5-1600VA 90  4.5<Um≤6
    9<Um≤12
    JBK5-2500VA