Product Core Brief
- Model: MIVII3000E00HI00 (MIVII-3-010E00HI00)
- Brand: General Electric (GE) / GE Grid Solutions
- Series: Multilin MIV II Series
- Core Function: Combined three-phase voltage and frequency protection for power generation and distribution assets.
- Product Type: Digital Protective Relay
- Key Specs: Combined Voltage & Frequency Protection (Code 3) | HI Power Supply (110-250 VDC / 110-230 VAC) | Modbus RTU RS485
Condition: New Original (New Surplus)
Product Introduction
GE MIVII3000E00HI00 is a micro-controller-based protective relay engineered for comprehensive voltage and frequency management within the GE Multilin MIV II product family. Designed for utility substations, generator panels, and industrial motor control centers, this unit continuously monitors three-phase voltage, zero-sequence ground voltage, and grid frequency to prevent equipment damage during electrical supply faults.
The module integrates four under/overvoltage elements, four frequency elements, and voltage unbalance monitoring into a single compact housing. Equipped with a high-range AC/DC power supply, front/rear Modbus communications, and configurable trip relays, it serves as a direct-fit replacement to restore protection loops without requiring physical panel cutouts or control wiring modifications.
Quality Control & Inspection Process
Surplus protective relays require strict verification before installation in active substation and power distribution panels. Every unit undergoes a rigorous 5-step quality assurance process:
- Inbound Inspection: Verify origin documentation and cross-reference serial tags against OEM manufacturing logs. Visually inspect the enclosure, rear terminal screws, front keypad, and LCD for mechanical stress, cracks, or terminal oxidation.
- Live Functional Testing: Mount the unit on a dedicated relay test bench connected to an auxiliary power source (110 VDC/230 VAC). Inject calibrated three-phase AC voltage and frequency signals using a secondary injection test set to verify IEEE 27, 59, and 81 trip thresholds, delay timers, and relay contact operations over 24 hours.
- Electrical Testing: Conduct insulation resistance checks with a 500 V Megger (verifying >10 MΩ to ground) and test isolation integrity across potential transformer (PT) input terminals and trip output contacts.
- Firmware & Configuration: Connect using EnerVista MIV II Setup software via the front RS-232 port. Read and record exact internal firmware builds, clear historic event logs/trip profiles, and backup non-volatile memory states.
- Final QC & Packaging: Enclose the relay in ESD-shielding bags with fresh desiccant. Frame the assembly in thick anti-static foam inside a heavy-duty container sealed with a QC Passed label.
