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Real quality challenge: According to the Quality Manager at a panel building LLC the following was concluded after testing 500 MCCBs: “We passed all of them through routine tests. However, regarding thermal trip intermittent failures we had 12 reject in the field after being installed.” The reason why the thermal trip fail rates were missed […]

Real production issue: “As a low-voltage electrical manufacturer, our MCB contact tips tend to misalign post-punching; we are looking for a mechanism that will allow us to achieve ±0.02mm precision and allow for 1P/2P/3P/4P conversion in under 5 minutes.”— Process Engineer, Low Voltage Electrical Manufacturer. “Punching” as it relates to MCB production means the rapid […]

Real purchasing dilemma: According to a plant manager of a switchgear manufacturer, “We purchased a circuit breaker testing device that claimed to test everything but it couldn’t handle the high-voltage requirements of our load isolation switch, nor is the supplier familiar with IEC 60947-3”. When choosing an automatic inspection machine, it’s not just searching for […]

Field failure cost: An undetected vacuum leak on a 24KV VCB led to failure to interrupt a short circuit. This substation outage cost our utility company more than $200,000, and we missed it due to our testing procedures. – Maintenance engineer, regional utility company. Testing a VCB breaker is not the same as testing a […]

Real production bottleneck: “We do a manual check of 10,000 MCBs on each shift, but we can perform only one function of the MCB test at a time. The escape ratio for testing defective MCBs is 0.8%; there is no way for us to track the MCB tests.” – Quality Manager of a mid-sized electrical […]

Real need from the shop floor: According to the production supervisor of an electrical product manufacturing company, the old pneumatic riveter causes 1.2% of loose connections on MCB’s. In response to that, he has requested another machine capable of handling different types of product(s) (1P-4P) at one time without having to make constant adjustments. As […]