ABB PDAA401 3BSE017234R1 THYRISTOR MODULE

Description

Try to run the motion at low speed in both directions. It might be possible, but with bad control properties. At

the same time measure the DC-current of the three line phases one by one by means of a tong-type A

meter in DC-mode. In case of thyristor failure there is a significant DC-current in some of the phases.

Investigation after fast checking

Disconnect the main supply, for example by removing the line fuses, and disconnect the motor.

For thyristor faultfinding remove the six voltage measurement fuses and disconnect the gate connectors in

the circuit board end. To avoid confusing results, it is also recommended to temporarily disconnect the RC

circuit DASG 110 or DASG 111.

Start the trouble shooting with Multimeter in resistance range. This is mostly adequate as the most common

thyristor faults result in short circuit or diode action of the devices.

If you cannot find any faulty thyristor but still suspect thyristor fault make the faultfinding with a thyristor

tester. Use following voltages for testing depending of the rated voltage of the ASTAT Thyristor Module:

Rated voltage 415 V: Use 1200 V test voltage

Rated voltage 600 V: Use 1600 V test voltage

Rated voltage 690 V: Use 2200 V test voltage

All treatment of thyristors shall be with absolutely cleanliness. If more grease must be added after replace

ment follow the instructions for the grease used.

Use following tightening torque then restoring screwed / bolted connections without tell tale washers or

spring indicators inside the thyristor bridges. The torque are valid both for electrical connections as well

mounting of fuses (630 – 1100 A) and thyristor modules (25 – 355 A)20:

Details: If you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.
Price issue: If you find that other suppliers offer a cheaper price for the same product, we are also willing to provide you with a reference price and give you further discounts.
Contact Us:+86 18106937731
Whatapp:+86 15359293870
Email: geabbdcs@gmail.com / 2872270648@qq.com
Contact Person: Chen

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