• Metering – current, voltage, power, Energy, frequency, power factor
• Demand – current, watts, vars, VA
• Temperature – 12 RTD inputs
• Vibration and Speed – 4 analog transducer inputs
• Expanded sequence of event recorder - 256 time stamped events
• Oscillography – 12 samples/ cycle up to 128 cycles in length
• Trending – 8 parameters with up to a 5 second sample rate

The 489 offers a multitude of different analog and digital inputs and outputs to allow the 489 to be seamlessly integrated into most generator automation schemes.

Outputs Relays

The 489 provides six output contacts for the purpose of controlling or signaling other devices and operations personnel. Protection elements can be configured to control the Trip contact, the Alarm contact, or the 3 Auxiliary contacts whenever the element operates. The status of each of these contact are also displayed on LEDs found on the relays front panel.

Digital Inputs

Eight digital inputs are available for monitoring the status of external contacts, tachometers, or control switches. With these inputs, the relay can identify the status of the associated breakers and receive commands from operational staff such as controlling the output relays, resetting the thermal limits, or triggering a waveform capture.

RTD Inputs

Twelve RTD inputs allow the 489 to monitor both the generator stator and bearing temperature. A built in voting feature adds additional security by ensuring that two RTDs monitoring the same device both detect the overtemperature condition before tripping the generator offline.

Analog Inputs

Four analog inputs are available for providing protection and monitoring of generator bearing vibration. The analog inputs are field programmable to measure transducer signals that operator over a range of 0 to 1 mA, 0 to 20 mA, or 4 to 20 mA.

Analog Outputs

Four analog outputs are available for signaling the value of measured analog quantities to external process control devices such as PLCs. The analog outputs can be ordered to operate over a 4 to 20mA range or a 0 to 1mA range and can be configured to signal a representation of most analog quantities measured by the 489 including currents, voltages, frequency.

• Networking interfaces - RS232, RS485, 10Mbps copper Ethernet
• Multiple protocols - ModBus™ RTU, ModBus™ TCP/IP, DNP 3.0 Level 2
• Embedded Ethernet - Direct connection to Ethernet Local/Wide Area Networks (LAN/WAN) supporting baud rates of up to 10Mbps, using Modbus TCP/IP protocol, via an RJ45 port located on the back panel of the relay

Advanced Communications

The 489 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new or existing monitoring and control systems. Multiple communication ports are available including a front panel RS232 serial port for easy local computer access, two RS485 serial ports and a 10Mbps copper Ethernet port that provide direct integration in most communications architectures.

The 489 supports the most popular industry standard protocols enabling easy, direct integration into most DCS and SCADA systems. Protocols supported include:

• Modbus RTU, Modbus TCP/IP
• DNP 3.0

The EnerVista™ Suite is an industry-leading set of software programs that simplify every aspect of using the 489 relay. The EnerVista™ suite provides all the tools to monitor the status of your protected asset, maintain the relay and integrate information measured by the 489 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the 489 Setup software included with every relay to carry out postmortem event analysis. 
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SUPERBUTE Advantage: Superior primary winding design and extra creep distance ensure accurate, reliable performance in harsh conditions

SUPERBUTE instrument transformers are designed for quality and reliability with features engineered to withstand high voltage stresses and extreme environmental conditions, while delivering the highest accuracies possible, all within a compact design. The result is a reliable, long-lasting, easy to handle design that ultimately lowers total cost of ownership.

Outdoor Voltage Transformers: Outdoor voltage transformers are available at 5-69 kV and 60-350 kV BIL. These units are offered in two distinct sizes for efficient sizing:

• Station class: Higher burden, higher thermal rating, and extra creep distance for metering and/or relaying applications in substations or installations where higher ratings are required such as high altitude or high contamination locations.
• Distribution class: Compact designs, with lighter burden and thermal rating for more efficient application to solid-state metering and other modern relay and control power installations.

Indoor Voltage Transformers: Indoor Voltage Transformers are available at 5-25 kV system voltage and 60-200 kV BIL.

Outdoor Current Transformers: Outdoor current transformers are available in Bar-Type and Window-Type styles, 5-15 kV, 60 kV-110 kV BIL, up to 4000 A. Outdoor wound-type current transformers (CTs) are available 5-69 kV, 60-350 kV BIL, up to 1200 A. Wound-type units are available in two distinct sizes:

• Station class: Station class CT’s have a versatile design that is suitable for metering and/or relaying applications. Units are larger in size, have additional creep distance, and are rated for heavier metering burdens.
• Distribution class: Distribution class CT’s are more compact and are designed specifically for maximum efficiency in solid-state revenue metering applications. These CT’s generally do not have a relay rating.

Outdoor current transformers are also available in Bar-Type and Window-Type styles, 5-15 kV, 60 kV-110 kV BIL, up to 4000A.

Indoor Current Transformers: Indoor current transformers are available 5-15 kV system voltage and 60-150 kV BIL. Product types include wound type up to 1200 A, and window-type or bar-type up to 4000 A.

Results and Benefits

The 4% and 40% test points in combination with a high rating factor of 4.0 means 1 Encompass CT can equal or better the performance of both higher AND lower ratios.

The 500:5 Encompass unit when compared to a 200:5 standard CT has equal to or better test results at all points included even low currents and is available at an equivalent price. This comparison holds true across several other standard CT ratios, meaning one Encompass CT can functionally replace up to eight other standard ratios, allowing for an inventory reduction of up to nearly 90%.

A 500:5 Encompass CT has ±0.3% accuracy from 200A to 2000A, compared to a standard 200:5 CT which has a ±0.3% accuracy from 200A to only 800A. Both CT’s have ±0.6% accuracy from 20A to 200A.

The 500:5 Encompass CT has equal to or better accuracy rating across the entire 20A to 2000A range. It is important to note that accuracy class only defines the “tolerance of error” allowed in a CT. Actual test results are also an important factor when evaluating CT’s. At a typical burden of B-0.1, the Encompass CT test results slightly outperform a standard CT, even at the lowest test amps. All Encompass test results are well within the IEEE limits.

^{* Tested Accuracy Class values shown are for illustrative purposes only, and not a guarantee of performance. Actual results may vary, within defined test tolerances.}

GE Vernova's family of voltage regulator products, along with their dedicated controllers, supports both substation and pole-mounted applications as illustrated below.

GE Vernova's Voltage Regulation solutions integrate seamlessly into utility optimization and control strategies for voltage regulation, and is comprised of the following components:

• Substation voltage regulator with integrated DGC-V controller
• Pole-mounted voltage regulators with integrated DGC-V controller
• Pole-mounted capacitor banks with integrated DGC-C controller
• Integrated line monitoring devices
• Metering for end of line voltage measurements
• Integrated communications