Effective 10/2004
Page 79I.L. 70C1036H05
Digitrip 1150 Settings (continued)
Setting Description
Long Memory
(Thermal Memory)
Indicates whether over-current memory function is on or off. (Applicable on LSI,
LSIG and LSIA curves only.)
Sliding Window Assignment Determines if the maximum kW demand or the maximum kVA demand is
calculated on a fixed or sliding 15-minute window.
Auto Waveform Capture Interval The time between auto waveform captures.
High INST Trip The circuit breaker tripped at a high fault current via separate High INST Module.
See Appendix C.
High Load Alarm When the current reaches the setting, a High Load Alarm occurs.
High Load Time The circuit breaker waits the duration of the High Load Time before entering into
an alarm condition.
Alarm to Event Log When enabled, alarm events are stored into the Event Log.
Ground Pickup Alarm When ground current exceeds this setting, a Ground Pickup Alarm occurs (when
applicable).
Neutral Pickup Alarm When neutral current exceeds this setting, a Neutral Pickup Alarm occurs.
Breaker Operations Count Alarm When circuit breaker operations count exceeds this setting, a circuit Breaker
Operations Count Alarm occurs.
Low Power Factor Alarm When the power factor falls below this setting, a Low Power Factor Alarm occurs.
THD Alarm When the percent THD exceeds this setting, a THD Alarm occurs.
kW Demand Alarm When the kW demand reaches this setting, a kW Demand Alarm occurs.
kVA Demand Alarm When the kVA demand reaches this setting, a kVA Demand Alarm occurs.
Activate Alarm Relay A on Trip The trip conditions upon which Alarm Relay A is activated:
Long Delay
Short Delay
Instantaneous
Ground Fault
Ampere Unbalance
Phase Loss
Over Temperature
Rating Plug
External Communications
Accessory Bus
Pulse Initiate Relay A The pulse initiator, a means of measuring kWh of kVAh energy, is on or off. If on,
no other functions can be assigned to Relay A.
Activate Alarm Relay A on
Alarm
The alarm conditions upon which Alarm Relay A is activated:
Ground Under Voltage
Neutral Amp Over Voltage
Long Delay Pickup Under Frequency
High Load Over Frequency
Operations Count Phase Unbalance
Low Power Factor Phase Rotation
THD
kW Demand
kVA Demand
Courtesy of NationalSwitchgear.com
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