"To carry out 2.55*In test as per Table 7 (test c) of IEC 60898"
Fully Automatic ‘Stand Alone’ Option (i.e. with or without PC).
ON line Loading of MCBs.
Can test MCBs ranging from 0.5 Amp to 120 Amp with suitable model.
Individual DC Constant Current Source with Fine Regulation; Multiplied Reliability and Graceful Degradation.
Current setting: Automatic within +/- 0.3 % of set value.
PC based operation; Selection of MCB its parameters from PC and/or MTCM for stand alone option.
Early, OK Late indication on each Individual Display Unit as well as on PC at same time.
Data Acquisition on PC by Windows based Software for traceability and statistical analysis.
The test system is a special version of the thermal test test system in the sense that the test jig is primarily designed to hold and connect multi pole MCBs for thermal verification so that each pole can be verified to trip within the IEC time band after the MCB has been riveted. This test ensures the trip verification of MCB so as to trip all the 4 poles at once when overload is detected in one single pole. In short, this is a verification-only bench.
The system is designed and customized to carry out 2.55*In test as per Table 7 (test c) of IEC 60898 (also mentioned for routine testing of MCBs). The test is done at dc current to exactly analyze and correct the bimetallic properties of the MCB as far as thermal tripping is concerned.
The DC source is an SMPS based variable source of a conveniently low voltage and the user may simply select the model based on the MCB rating and tripping current (2.55*In or any other current value). The source is more accurate than the conventional electrical source in the sense that it is capable to correct any load or line accuracies instantaneously.
The entire system, whether one station or multi station is PC interfaced and the software is in built with data logging and data analysis features.