Undervoltage Relay Delay; Overvoltage Relay Pickup; Overvoltage Relay Delay; Power-Reversal Relay Pickup - GE MicroVersaTrip Plus Series User Manual

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Figure 32. Trip Unit display for undervoltage relay zero-volt trip

Undervoltage Relay Delay

This function sets the delay time before an under­
voltage trip occurs. The range of delays is 1 to 1 5
seconds, i n steps of 1 second. Choosing
undervoltage protection. The Trip Unit display is
shown in Figure 33.
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Figure 33. Trip Unit display for undervoltage relay delay.

Overvoltage Relay Pickup

This function measures the true rms voltage in all
phases and initiates a trip if any phase voltage
exceeds the set point. The range of set points is 1 1 0
to 1 50% of the nominal voltage, with an increment
of 1 % . The Trip Unit display is shown in Figure 34.
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Figure 34. Trip Unit display for overvoltage relay pickup.

Overvoltage Relay Delay

This function sets the delay time before an overvolt­
age trip occurs. The range of delays is 1 to 1 5 sec­
onds, in steps of 1 second. Choosing
SETUP
UVR
PICKUP
enabled.
disables
O F F
SETUP
s
DELAY
SETUP
PI C KUP
disables
OFF
overvoltage protection. The Trip Unit display is
shown in Figure 35.
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Figure 35. Trip Unit display for overvoltage relay delay.

Power-Reversal Relay Pickup

This function measures the direction of power flow
through the breaker and initiates a trip if a sufficient
magnitude of reverse power is detected. The range
of set points is 1 0 kW to 990 kW, in steps of 1 0 kW.
The Trip Unit display is shown in Figure 36.
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Figure 36. Trip Unit display for power-reversal relay pickup.

Power Direction Setup

This function selects the normal power flow direc­
tion for the breaker, either from line to load or from
load to line. Figure 37 shows the setup display for
normal power flow of line to load. This direction
setup also affects the sign of the normal power
metering displays.
Figure 37. Trip Unit display for power direction setup, showing
21
2.
SETUP
s
DELAY
SETUP
PI C KUP
SETUP
line to load.