T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX Technical Specifications

About the T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX

Outfitted with advanced automation capabilities using Multilin’s FlexLogic technology, GE’s T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX is a Transformer Management System that works with transformers of small, medium, and large sizes. It is compliant with IEEE C37.91 standards and provides high-speed protective functions in response to system faults. The relay can automatically resolve faults, or at least shield system components in the event that these faults transpire.

The relay possesses a number of communications options that reduce the need for hardwiring and enable the high-speed, secure transfer of data between contact points and UR relays. The Direct I/O connection, RS232 port, RS485 port, RS422 port, and Ethernet options provide versatile options for establishing communications within the transformer system.

Monitoring and metering functions provided by the relay include oscillography waveform capture at 64 samples per cycle, event recording (up to 1024 time-tagged events), and data logging. The data logging element offers sixteen different channels allowing for up to one sample per cycle. Users can configure which parameters are sampled and recorded, and this data can be downloaded to EnerVista UR for further review. This information is also retained when power is lost since data is stored in non-volatile memory.

Multilin’s EnerVista software offers the T60-N04-HKH-F8M-H6P-M8R-P6P-U6P-WXX a suite of tools with which to edit settings, trend and export data, prepare for cyber security audits, and more. The program comes with the relay and can be downloaded from Multilin’s website or installed through a DVD. Requirements for a computer running the EnerVista UR program are extremely minimal, so users do not have to invest in expensive computing equipment.

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).

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AC Voltage Relay Burden	< 0.25 VA at 120 V
Contact Inputs Tolerance	±10%
DCMA Ouput Isolation	1.5 kV
Percent Differential Minimum Pickup	0.05 to 1.00 pu in steps of 0.001
Phase Distance Directionality	forward, reverse, or non-directional per zone
Pollution Degree	II
RTD Input Accuracy	±2°C