Frequently Asked Questions about T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX
What are some characteristics of the T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX?
The T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX is a T60 Multilin relay designed for the protection of medium and large transformers. This unit is appropriate for transformers that have up to six windings (ring bus or breaker and a half configuration). This specific T60 can either be used as a stand-alone unit or it can be incorporated within a larger substation control system.
What is the percent differential protection of the T60 Multilin transformer protection system?
The T60 has percent differential protection that is both restrained and unrestrained in order to increase the security feature of the unit. The percent differential is based on a characteristic that is configurable with a dual breakpoint and a dual-slope differential restraint. The T60 also uses more advanced algorithms to detect failure and CT saturation in order to remain immune to conditions of high current AC or low current DC.
How does the T60 prevent normal operation in the instance of transformer over excitation?
The T60 is able to detect the situations that may lead to the transformer over excitation. For example if the system frequency drops or if the transformer voltage increases suddenly then overexcitation may occur. The operation of the percent differential element is desired to halt in these circumstances. In this case a fifth harmonic input is used to take over in these conditions (increased V/Hz ratio).