Testing - GE Multilin 850 Instruction Manual

CHAPTER 4: SETPOINTS

Testing

Simulation
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 4-175: Testing Display Hierarchy
Path: Setpoints > Testing
• Simulation
• Test LEDs
• Contact Inputs
• Output Relays
The 8 Series can simulate current and voltage inputs when the Simulation feature is
enabled. Other test operations are also possible such as the LED lamp test of each color,
contact input states and testing of output relays.
Path:
Setpoints > Testing > Simulation
• Setup
• Pre-Fault
• Fault
• Post-Fault
The Simulation feature is provided for testing the functionality of the 8 Series in response
to programmed conditions, without the need of external AC voltage and current inputs.
First time users will find this to be a valuable training tool. System parameters such as
currents, voltages and phase angles are entered as setpoints. When placed in simulation
mode, the relay suspends reading actual AC inputs, generates samples to represent the
programmed phasors, and loads these samples into the memory to be processed by the
relay. Normal (pre-fault), fault and post-fault conditions can be simulated to exercise a
variety of relay features. There are three sets of input parameters used during simulation,
each provides a particular state of the system as follows.
TESTING
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