| Specification |
Details |
| Model |
489-P5-LO-A20-E |
| Series |
Multilin 489 |
| Type |
Generator Management Relay (Microprocessor-Based) |
| Phase Current Transformer (CT) Secondary |
5 A (P5) |
| Control Power |
Low Input (LO): 20–60 VDC, 20–48 VAC, 48–62 Hz |
| Analog Outputs |
Four 4–20 mA (A20) |
| Display |
Enhanced 40-character LCD (E) |
| Communication Ports |
1 RS232 (front), 2 RS485 (rear), Modbus RTU protocol |
| Protection Features |
Thermal overload, ground fault, phase differential, overcurrent, undervoltage/overvoltage, underfrequency/overfrequency, reverse power, loss of excitation, inadvertent energization |
| Metering Capabilities |
Voltage, current, power, frequency, power factor, reactive power |
| RTD Inputs |
12 (3-wire, programmable) |
| Output Relays |
6 (for trips, alarms, service), Form-C |
| Voltage Transformer (VT) Inputs |
4 (3 for terminal voltage, 1 for neutral voltage) |
| Event Recording |
Logs last 256 events with time, date, cause, and system parameters |
| Operating Temperature |
-40°C to +60°C (-40°F to +140°F) |
| Storage Temperature |
-40°C to +80°C (-40°F to +176°F) |
| Weight |
10 kg (22 lbs) |
| Dimensions |
21.6 x 22.4 x 25.2 cm (8.5 x 8.8 x 9.9 in) |
| Mounting |
Draw-out design, SR489 metal case |
| Certifications |
CE, CSA, UL |
| Software Compatibility |
EnerVista 489 for setpoint configuration, data logging, and analysis |
