EXCELL PRECISION CO., LTD
SP151 Weighing System Surge Protector
The high performance surge protector device applies to 4- or
1. General
SP151 Surge Protector is designed for accessing direct into the cabling of the weighing system, in order to prevent the load cells and other sensitive electronic components from damage by a near surge strike or power failure. Surge protector works at the local only, therefore, SP151 devices should be installed on both ends of circuitry loop.
A complete system protection requires additional surge protection device(s) to ensure that other items, such as AC power, external printers, mainframes, and telephone and so on.
2. Installation
The following recommendation is only as a reference. Take into account of local conditions, the installation should always be carried out by professionals.
2.1 Siting
SP151 should be set within 3m from the load cells or systems to be protected. For the maximum degree of protection, SP151 should be used at both ends concurrently of the interconnected cables. In general, install a protective device between the junction box and load cells set (Figure 1). Some systems specify load cell individual cable(s), protections are needed for every load cell (Figure 2). Within the weighbridge, the SP151 should be set close to the indication systems, the interconnecting cables must be separated by at least 50mm from other irrelevant cables.
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