2 units of SEL751A01G3G0X71860300 in stock from the United States

2 units of SEL751A01G3G0X71860300 in stock from the United StatesupHaichending specializes in selling SEL products in the United States, with SEL offices and SEL Shanghai sales center.

The SEL-751A comprehensive protection and measurement device provides a solution for industrial feeder protection with the SEL-751A relay, flexible I/O options, easy installation, and fast setup. Optional Ethernet or serial port communication and multiple protocols, including MIRROREBITS ® And IEC61850. Provide complete feeder protection for overcurrent, overvoltage, undervoltage, and frequency components. The complete feeder protection flexibly cooperates with inverse time limit and instantaneous overvoltage, overcurrent, low voltage, as well as frequency component and circuit breaker failure protection. Optional protection function2 units of SEL751A01G3G0X71860300 in stock from the United States

Each inverse time element of SEL-751A has two types of return characteristics. One type is when the current is at least one cycle below the starting value. Another way to imitate electromechanical induction The reset time of the disk component is determined by the time disk setting, disk movement percentage, and current amount. The second option is not available when using standard coincident curves. The overcurrent element used for phase fault detection and the negative sequence overcurrent element are used to detect phase to phase faults. Negative sequence current does not reflect the three-phase load current, thus providing higher sensitivity to phase to phase faults. There is no significant negative sequence component in three-phase faults, which can be detected by phase overcurrent components. Zero sequence (IG) and zero sequence (IN) overcurrent elements are used to detect ground faults. In addition to 1A/- zero sequence CT, the SEL-751A offers optional high-sensitivity zero sequence components with sensitivity as low as 0.125 mA on the secondary side. Connect star shaped or open delta voltage star shaped connection (four wire) voltage or open delta connection (three wire) voltage can be connected to voltage inputs VA, VB, VC, and N according to Figure 1. You only need to make global settings (DELTA_Y=WYE or DELTA_Y=DELTA) and external wiring changes without any internal hardware changes or adjustments. Therefore, regardless of the wiring form of the three-phase voltage, a SEL-751A model can meet the needs of various distribution protections. In addition, the SEL-751A also supports single voltage input. For users who use a single voltage input, the SEL-751A will perform all protection and measurement functions based on the assumption of three-phase voltage balance.

2 units of SEL751A01G3G0X71860300 in stock from the United States Shanghai Chending specializes in selling SEL products from the United States, with SEL offices and SEL Shanghai sales centers.