GE Multilin 350 Series User Manual

6–92 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
S3 PROTECTION CHAPTER 6: SETPOINTS
the Latched Alarm or Alarm setting is selected. Any or all of the output relays 3 to 6 can
be selected to operate when the phase UV function is selected as Latched Alarm, Alarm,
or Trip.
PH UV PKP
Range: 0.00 to 1.25 x VT in steps of 0.01
Default: 0.75 x VT
This setting defines the phase UV pickup level, and it is usually set to a level, below which
the drawn current from voltage sensitive loads, such as induction motors may cause
dangerous motor overheating conditions.
PH UV CURVE
Range: Definite Time, Inverse Time
Default: Inverse Time
This setting selects the type of timing-inverse time/definite time to define the time of
undervoltage operation based on the selected UV time delay, and the actual
undervoltage condition with respect to the selected UV pickup.
PH UV DELAY
Range: 0.1 to 600.0 sec in steps of 0.1 sec
Default: 2.0 s
This setting specifies the time delay used by the selected “PHASE UV CURVE” type of
timing, to calculate the time before UV operation.
PH UV PHASES
Range: Any One, Any Two, All Three
Default: Any One
This setting selects the combination of undervoltage conditions with respect to the
number of phase voltages under the undervoltage pickup setting. Selection of the “Any
Two”, or “All Three” settings would effectively rule out the case of single VT fuse failure.
PH UV MIN VOLTAGE
Range: 0.00 to 1.25 x VT in steps of 0.01
Default: 0.30 x VT
The minimum operating voltage level is programmable to prevent undesired UV
operation before voltage becomes available.
OUTPUT RELAY 3 to 6
Range: Do not operate, Operate
Default: Do not operate
Any or all of the output relays 3 to 6 can be selected to operate upon a Phase UV
condition. The selection of relay outputs operation is available no matter whether
Latched Alarm, Alarm, or Trip function is selected.
BLOCK 1/2/3
Range: Off, Contact Input 1 to 10[8], Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Element 1 to 16
Default:Off
Three blocking inputs are provided in the Phase UV menu. One blocking input “high” is
enough to block the function. The available selections for each block include Contact
input, Virtual Input, Remote Input, or Logic Element.
Courtesy of NationalSwitchgear.com

GE Multilin 350 Series Specifications

General

Brand	GE
Model	Multilin 350 Series
Category	Relays
Language	English