Table of Contents
Advertisement
CHAPTER 1: INTRODUCTION
Monitoring
Inputs
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
LOCKOUT RESET
Function: .................................................................Reset any lockout trips when this feature is configured.
Operation:...............................................................Contact Input 1 to 10, Virtual Input 1 to 32, Logic Element 1
RESET
Function: .................................................................Resets any alarms and non-lockout trips when LOCKOUT
Operation:...............................................................Contact Input 1 to 10, Virtual Input 1 to 32, Logic Element 1
FUSE FAIL (VTFF)
Time Delay:............................................................1 s
Timing Accuracy:................................................±0.5 s
Elements: ................................................................Trip or Alarm
AMBIENT TEMPERATURE
High Temperature Pickup: ..............................20°C to 80°C in steps of 1°C
Low Temperature Pickup: ...............................-40°C to 20°C in steps of 1°C
Time Delay:............................................................1 to 60 min in steps of 1 min
Temperature Dropout:......................................Configurable 90 to 98% of pickup
Temperature Accuracy: ...................................±10°C
Timing Accuracy:................................................±1 second
BREAKER HEALTH
Timer Accuracy: ..................................................± 3% of delay setting or ± 1 cycle (whichever is greater) from
DEMAND
Measured Values:................................................Phase A/B/C present and maximum current, three-phase
Measurement Type:...........................................Thermal Exponential, 90% response time (programmed): 5,
Current Pickup Level:.........................................10 to 10000 in steps of 1 A
Real Power Pickup Level:.................................0.1 to 300000.0 in steps of 0.1 kW
Reactive Power Pickup Level:........................0.1 to 300000.0 in steps of 0.1 kVar
Apparent Power Pickup Level: ......................0.1 to 300000.0 in steps of 0.1 kVA
Dropout Level: ......................................................96-98% of Pickup level
Level Accuracy:....................................................± 2% (current demand only)
CONTACT INPUTS
Inputs:.......................................................................10
Selectable thresholds:.......................................17, 33, 84, 166 VDC
Recognition time: ................................................1/2 cycle
Debounce time: ...................................................1 to 64 ms, selectable, in steps of 1 ms
Maximum input voltage & continuous
current draw:...................................................300 VDC, 2 mA, connected to Class 2 source
Type: .........................................................................opto-isolated inputs
External switch: ...................................................wet contact
to 16, Remote Input 1 to 32
RESET is configured, or resets any alarms and trips (lockout
and non-lockout trips) when LOCKOUT RESET is not
configured.
to 16, Remote Input 1 to 32
pickup to operate
present and maximum real/reactive/apparent power
10, 15, 20, 30 minutes
Block Interval / Rolling Demand, time interval (programmed):
5, 10, 15, 20, 30 minutes
±10%
SPECIFICATIONS
1–15
Advertisement
Table of Contents
