MCB Thermal Verification Test Bench (IEC 60898 Table 7 (Test C))

PC based Panel equipped with Barcode scanner will be used for Verification of 100% Thermal characteristics of MCBs.

DC Constant Current source 0.5A – 200A for individual station with fine Regulation at suitable voltage will be used (Dual Current source will be used). Accuracy of the system to be better than Class 0.2.

Bench will be used for verification of MCBs of the current rating (maximum 200A) 0.5A, 1A, 1.6A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, & 63A at 2.55/3 times the rated current.

Panel will be able to test 5 MCB poles at a time with independent test fixture and control.

Each station will be provided with one Display Unit for controlling, test result and the sequence of operation. Each station module will measure the trip time of MCB under test, and will also indicate the result as Early, OK, Late and No Trip & same data will be transferred to PC immediately.

The type of MCB under test & its related parameters like time band, Current will be linked with the MCB Cat number and will be selectable through PC.

Temperature correction factor for test current / duration will be discussed and decided jointly (selectable through PC).

After selection of Cat No., it should be possible to load MCBs independently on each station. Each station should start the test after loaded MCB is scanned with Barcode Scanner. Systems will operate by Push Button.

Verification program will be as below : 0 – T1 : MCB trips indicating as “Early“ T1 – T2 : MCB trips indicating as “OK” (T1 to T2 is a time of the particular rating) T2 – T3 : MCB trips indicating as “Late” T4 : MCB trips indicating as “No Trip” (Where T1, T2, T3 & T4 indicate the Tim Pneumatically operated mechanical fixtures will be used to connect the MCB. Fixture will be suitable for testing of Single, Double, Three & Four pole MCB.

The product can be customized as per the number of stations: 1 (stand alone), 2, 4, 6, 8, 10 and 12 stations. Additionally, the product can be microccontroller based with each microcontroller controlling an individual station, or a PC based wherein the PC controls all the stations simultaneosuly and independenly of each other. The product is available as a standalone module with micro controller based control – without the use of PC as a low cost alternative with features as scalability and accuracy intact.