SEL 0700G11A1A1A77850000 | SEL-700G Generator Protection Relay

⚡ Product Description

The SEL 0700G11A1A1A77850000 is an SEL-700G Generator Protection Relay designed for comprehensive protection, monitoring, and synchronization of utility and industrial generators. The SEL-700G combines generator protection functions with an integrated automatic synchronizer, flexible I/O, metering, event recording, and advanced communications. Protection functions can include current differential, stator ground, loss-of-field, reverse power, over/underfrequency, volts-per-hertz, thermal, negative-sequence, and out-of-step protection depending on the configured model and options.

The SEL-700G can also integrate with serial- and Ethernet-based control networks and supports communication technologies including IEC 61850 Edition 2, Modbus, DNP3, IEC 60870-5-103, EtherNet/IP, Mirrored Bits, RSTP, and IEEE 1588 PTP depending on configuration.

SEL-700G

🔧 Key Features

SEL-700G generator protection platform
Comprehensive generator and intertie protection
Integrated automatic synchronizer
Current differential protection
100% stator ground protection options
Loss-of-field and reverse-power protection
Voltage, current, frequency, power, and thermal protection
Flexible I/O and optional expansion cards
Event reporting and metering functions
Ethernet and serial communications
Suitable for generator upgrades and protection-system retrofits

📋 Product Datasheet

Parameter	Value
Brand	SEL
Model	0700G11A1A1A77850000
Series	SEL-700G
Product Name	Generator Protection Relay
Application	Generator Protection and Synchronization
Country of Origin	United States
Condition/Status	New – Open Box
Protection Functions	Generator, Differential, Ground, Frequency, Power and System Backup Protection
Communications	Ethernet / Serial / Configurable Protocols
Power Supply	Configuration-dependent

The referenced item is listed as New – Open Box, with country of origin shown as the United States. The exact power-supply rating and installed communication/I/O options should be confirmed from the complete SEL ordering code and relay nameplate before installation.

❓ Common Questions & Answers

Q: What is the SEL-700G used for?
A: It is a protective relay designed for utility and industrial generator protection, monitoring, and synchronization.

Q: Does the SEL-700G include an automatic synchronizer?
A: Yes. The SEL-700G includes an integrated automatic synchronizer capable of controlling frequency, voltage, and phase during generator synchronization.

Q: What generator protection functions are available?
A: Depending on the configuration, functions include differential, stator-ground, directional, loss-of-field, thermal, volts-per-hertz, frequency, power, negative-sequence, and out-of-step protection.

Q: Does it support communications with a plant control system?
A: Yes. The SEL-700G supports multiple serial and Ethernet communication technologies, with available protocols depending on the specific hardware and firmware configuration.

Q: Can it provide 100% stator ground protection?
A: Yes. With the appropriate neutral-voltage configuration, the SEL-700G can provide 100% stator ground coverage using neutral-overvoltage and third-harmonic voltage differential methods.

Q: Is 0700G11A1A1A77850000 interchangeable with every SEL-700G?
A: No. SEL-700G units can have different CT/PT inputs, power supplies, I/O cards, communications options, and firmware configurations. The complete ordering code should be matched before replacement.

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