Transformer TK-20 (TK 20, TK20; tk-20; tk 20; tk20)
Transformer TK-20 - a device designed to be embedded in the sealing jaws robots and manipulators as current sources for the implementation of welding.
Voltage class: up to 0.66 kV;
Rated voltage: 0.66 kV;
Ratio: 10/5A, 15/5A, 20/5A.
Structural features of transformers TK-20
Transformers TK-20 have water cooling and protection from overheating of the windings, as well as holes for tires. Each current transformer TK-20 consists of a coil is mounted with a magnetic core shell type, poured into the casing heat resistance compound. The primary winding device with the findings of L1 and L2 is made of heavy gauge wire with a current capacity, which is needed for the normal operation of the installation. Secondary winding TK-20 is in the form of two series-connected circular turns. The secondary winding of the current transformers TK-20 and the conclusions I1 and I2 of the secondary winding is connected to the terminal block 1. It has a number of turns to the rated current of the primary winding current induced therein 5A.
The outer coil transformer TK-20 temperature sensor. Magnetic TC-20 assembled from split twisted cores of cold-rolled electrical steel and casing made of sheet steel.
Overall dimensions of current transformers TK-20 - less than 112 × 150 × 225mm. Weight devices does not exceed 1.7 kg.
Specifications transformer TK-20:
- The value of the primary current: 10A, 15A, 20A;
- The value of the secondary current: 5A;
- Insulation class: F;
- Nominal open-circuit voltage of the secondary winding: 3.6 V;
- Continuous secondary current of 4.0 kA.
Rated supply voltage is set to 380V at a frequency range 50 Hz. Current transformers TK-20 have a power of 20 W at a 50% duty cycle. Cooling water consumption for the device at an inlet pressure of 1,47 × 105Pa (1.5 kgf / cm 2) is not less than 4.0 l / min.