GE M60

CHAPTER 2: PRODUCT DESCRIPTION SPECIFICATIONS
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2-25
2
Availability: 1 per CT bank with a minimum of 2
BREAKER FLASHOVER
Operating quantity: phase current, voltage, and voltage difference
Pickup level voltage: 0.004 to 1.500 pu in steps of 0.001
Dropout level voltage: 97 to 98% of pickup
Pickup level current: 0.020 to 1.500 pu in steps of 0.001
Dropout level current: 97 to 98% of pickup
Level accuracy: ±0.5% or ±0.1% of rated, whichever is greater
Pickup delay: 0 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±42 ms, whichever is greater
Operate time: <42 ms at 1.10 × pickup at 60 Hz
BREAKER RESTRIKE
Principle: detection of high-frequency overcurrent condition ¼ cycle after breaker opens
Availability: one per digital signal processor (DSP)
Pickup level: 0.1 to 2.00 pu in steps of 0.01
Reset delay: 0.000 to 65.535 s in steps of 0.001
REDUCED VOLTAGE STARTING
Mode: current only, current and timer, current or timer
Transition level: 25 to 300% of FLA in steps of 1
Timer: 1.0 to 600.0 seconds in steps of 0.1
Timer accuracy: ±50 ms
RTD PROTECTION
Pickup: 1 to 249°C in steps of 1
Dropout level: 2°C of pickup
Timer accuracy: <1 s
Elements: trip and alarm
REMOTE RTD PROTECTION
Pickup level: 1 to 200°C
Dropout level: 2°C of pickup
Time delay: <10 s
Elements: trip and alarm
RRTD COMMUNICATION FAILURE
Pickup level: no communications
Time delay: 10 s
TRIP BUS (TRIP WITHOUT FLEXLOGIC)
Number of elements: 6
Number of inputs: 16
Operate time: <2 ms at 60 Hz
Timer accuracy: ±3% or 10 ms, whichever is greater
2.5.2 User-programmable elements
FLEXLOGIC
Programming language: Reverse Polish Notation with graphical visualization (keypad programmable)
Lines of code: 1024
Internal variables: 64
Supported operations: NOT, XOR, OR (2 to 16 inputs), AND (2 to 16 inputs), NOR (2 to 16 inputs), NAND (2 to 16 inputs),
latch (reset-dominant), edge detectors, timers
Inputs: any logical variable, contact, or virtual input
Number of timers: 32