The Megger BVM150 (CJ-59092) System of 16 BVM Battery Voltage Monitors is a battery cell/block voltage measurement system performed on battery banks. This system can be used in conjunction with a load device such as the TORKEL and can be used to measure cell or block voltages from a PC with TORKEL Win or PowerDB software (additional equipment and software sold separately). The BVM system is designed in a modular form where one BVM unit is used for each cell or block in the battery string to be tested. One BVM unit for each cell or block connects to the next in a daisy chain fashion. The included dolphin clips can easily be removed and exchanged with different styles of standard banana plug clamps or extension cables to accommodate any battery connection requirement.

Up to 2 x 120 BVMs can be daisy chained in a single battery bank under test that is used for the capacity testing of large, industrial battery banks commonly found in electrical power substations, telecom facilities, and UPS systems generally. When used in conjunction with a load device, such as the Megger TORKEL, and test data management software, such as TORKEL Viewer, PowerDB, or TORKEL Win, the BVM system facilitates the execution of an automated battery bank capacity test according to IEC and IEEE standards. The test also meet NERC/FERC requirements. The BVM system is designed in a modular form where one BVM device is used for each battery cell or 'jar' in the string to be tested. One BVM for each battery connects to the next in a 'daisy-chain' fashion, thereby providing easy and economical expandability to meet the testing requirements for small-to-large battery bank systems.

Setting up the BVM system for a test is quick and easy. Each BVM unit is identical and can be connected in any battery test position, thus providing maximum flexibility and interchangeability of the BVMs. The BVM 'Auto Discovery' feature enables the host device to automatically determine the number of batteries under test and provide sequential identification of each BVM unit in the test string.

Application Testing

Each BVM unit is identical and can be connected in any battery test position. A single cable connects the first BVM unit in the string to a power and signal connector. The BVM system data output is connected via an Ethernet cable to the BVM's USB port on the TORKEL900 or to a PC with data management software. The BVM system can be used together with older Megger TORKEL versions or any battery load bank. This setup requires the use of a separate PC with test management software. The red dolphin clip in the chain should be connected to the most positive battery pole in the battery bank. The voltage over each BVM device will be logged throughout the complete discharge test.