GE Multilin 850 User Manual

CHAPTER 4: SETPOINTS TESTING
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–425
Testing
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.
Simulation
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.
Pre-Fault
Setpoints
Device
System
Inputs
Outputs
Protection
Monitoring
Control
FlexLogic
Level 1 Level 2 Level 3 Level 4
Setup
Testing
Simulation
Test LEDs
Contact Inputs
Output Relays
Fault
Post-Fault

GE Multilin 850 Specifications

General

Brand	GE
Model	Multilin 850
Category	Protection Device
Language	English