Industrial Shock-Block™ SB6100
案例研究

The Industrial Shock-Block™ is a personnel protection device that effectively aids in safeguarding your people where equipment and water are present. The reliable performance and environmental considerations (humidity, ultraviolet, corrosion, and dust) of the SB6100 make it the perfect option for companies seeking high-quality protection for their employees. Below are a few examples of customers that discovered the many benefits of the Littelfuse Industrial Shock-Block™ SB6100.

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Municipal Water Utility Company
Protects Workers from Shock Hazards

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A municipal water utility company, that supplies water to more than three million residents, wanted to protect its workers from shock hazards. The facility had two tanks the size of Olympic swimming pools containing 7-10 hp submersible pumps running on 600 V. Once or twice a year the tanks must be cleaned by hand, and workers enter while the water is still present and the pumps are running. The solution was the Littelfuse Industrial Shock-Block™ SB6100 EGFPD. 该公用事业公司将EGFPD安装在为每个泵供电的电机控制中心。 The EGFPDs operate like an industrial ground-fault circuit interrupter. If a device senses a ground fault above a trip setting, it will open the circuit very quickly to protect workers from shock.

 

Large Solution Mining Company Protects
Employees from Electric Shock Near Pumping Station

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溶液开采需要持续的水供应。 A large solution mining company has pump stations located near the water supply to pump the water in for processing. The water needs to be filtered before it is pumped to the mine so there is a filter screening the water intake. 即使在泵站内安装了第二个过滤器,岩石、沙子和碎片仍会进入泵站。通常,员工必须每年一次借助潜水泵清理集水槽中的碎屑。 Having a submersible pump running while the employee is cleaning leaves them at risk for electrical shock. The Industrial Shock-Block™ was the solution. They mounted the EGFPD on the wall inside the pumping station along the river bank. Because the Industrial Shock-Block™ is lightweight, the wall-mount installation among the electrical cabinets worked for this application. Now when a worker goes into the pumping station to clean the sump, they will be protected by the Industrial Shock-Block™.

 

Brick Manufacturer Protects Workers
from Electrocution While Using Wet Saws

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美国西部的一家制砖厂将粘土加工成砖块和其他建筑材料,用于住宅和商业项目。 Part of this process involves wet saws that operate at high voltage (480 V) and it is a wet process. The company managers wanted to make sure operators were safe from electrical ground faults. 工厂电工与犹他州盐湖城的一家Littelfuse经销商讨论了他的担忧,该经销商的代表建议使用Littelfuse的设备接地故障保护器件(EGFPD)。 The Industrial Shock-Block™ SB6100 was installed between the motor control center and the face-cut saws on a manufacturing line built in the 80s. 经过一些实验,确定 30 mA 是防止误脱扣的最低设置。 If the device senses a ground fault at or above that threshold, it opens the circuit within 20 ms - fast enough to prevent worker injury or death from dangerous electrical shock.
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