Key Specifications
CT is the device to measure alternating current. When the electric current is high in the electric circuit and cannot be measured, we can use CT to know the decreasing rate of electric current in the electric circuit, and it can make circuit easily connect with the measuring and recording instruments.
Sample Lead Time： 3~5 days
Production Lead Time：3 Weeks (Urgent order can be negotiated)
Quantity：No MOQ Require
Specification Table
NFC Transformer provides both standard and custom designs with following features.
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105/130/155/180 degree insulation systems are available.
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Design to meet UL/CSA/TUV/VDE/CE and other appointed safety agency requirements.
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Auto transformer and insulated transformer can be design according to requirements.
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100/110/115/120/208/220/230/240/277/380/415V/440V or specified primaries are optional.
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Secondary voltage: 3.6V/6.3V12V/24V/36V/100V/110V/120V/200V/220V/240V/380V or customer specified.
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Terminations and mounting means can be customized.
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ROHS 2.0 Directive (EU) 2015/863 amending Annex II to Directive 2011/65/EU and Substance of very high concern (SVHC) under Regulation (EC) NO.1907/2006 of REACH are conformity.
Process
Toroidal Transformer Main Materials (IQC process)
All the material is inspected strictly with ISO9001:2015 quality program.
Core: appearance inspection and core loss test.
Copper wire: pinhole test and coat of adhesion test
Toroidal Transformer Process
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Core is from 0.23mm thick silicon steel Japanese material 23Z100.
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Core is protected from 4 layer polyester films with 0.075mm thick (50% overlap 2 layers). The brand of polyester films is DUPONT.
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Primary winding wire is polyesterimid enameled, have 130/155/180degress for choice.
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Primary lead wire from type UL1617 double insulation for 600V voltage and 105 degree
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Insulation between primary and secondary is overlap 67% 2 layers , 4 layers polyester films or 50% 4 layers, , 8 layers polyester films. It is subjects to different safety agency requirements. The brand of polyester films is DUPONT.
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Secondary winding wire is polyesterimid enameled, have 130/155/180degress for choice.
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Secondary lead wire from type UL1015 for 600V voltage and 105 degree
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Outer insulation is overlap 50% 1 layers, 2 layers polyester films. The brand of polyester films is DUPONT.
Transformer Testing Items
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Exciting current & core loss: 100% test
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DC Resistance: 100% test
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Layer insulation: 100% test
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Loading test: 100% test
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Hi-pot test: 100% test, but the time is only approx 10seconds for the production-run.
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Aging test: Spot check, 10% of product quantity
Assembly Means
Two mounting way for choice.
1. Rubber + Metal disk Assembly
2. Epoxy in the centre
FAQ
