GE EntelliGuard G Application Manual page 55

Section 6. Application Data
Table 6.3C
Operational Ratings, IEC Circuit Breakers
Mechanical
Envelope Frame Operations -
No Maintenance
400-1600A 12500
1
2000A 12500
800-1600A 10000
800-1600A 5000
2000-2500A 10000
2
2000-2500A 5000
3200-4000A 10000
3200-4000A 5000
4000A 5000
3 5000A 5000
6400A 5000
Table 6.4
Factor "B" – Ambient Temperature Rating Factor
Ambient Maximum Wire
Temperature, °C 1 Insulating Rating °C
25 75
40 90
50 105
60 125
70 125
Table 6.5
Factor "D" – Altitude
Altitude
Feet Meters
100 - 6,000 30 - 1,800
6,001 - 10,000 1,801 - 3,000 1.04
> 10,001 > 3,001
Table 6.6
Factor "E" – Load Class Rating
Load Type
Switching Electromagnets
Single Motor Branch Circuit Protection (Normal Duty)
Switching Capacitors
Single Motor Branch Circuit Protection (Heavy Duty)
All Other load Types (Normal Duty)
Table 6.7
Circuit Breaker and Trip Parameters
Adjustment or Capability
Trip Current Rating Plug
Long Time Pick Up
Short Time Pick Up
Instantaneous Pick Up
Maximum Achievable Selectivity = Icw
Ground Fault Pick Up
Override Pick Up
Making Current Release
Courtesy of NationalSwitchgear.com
Mechanical
Operations -
With Maintenance
20000
20000
20000
10000
20000
10000
20000
10000
10000
10000
10000
Factor B
2
1
1 Average air temperature over a 24-hour
1
period outside the breaker's insulated case,
1 but inside the enclosure.
2 Cable (wire) must be based on 75°C current
1.1
rating per Table 3 10-16, current National
1.15
Electrical Code.
Factor D
1
1.08
Factor E
1.5
1
1.5
1.5
1 1.75
1
Abbreviation Trip Designation Setting or Range
In In
LTPU LTPU
STPU STPU
IPU I
N/A
GF GF
HSIOC N/A
MCR N/A
Electrical Operations - No Maintenance
440V AC 690V AC 1000V AC
10000 8000 500
8000 6000 500
10000 8000 500
5000 5000 500
6000 5000 500
5000 5000 500
5000 2500 500
5000 2500 500
2500 1500 500
1500 1000 300
1500 1000 300
1 Use this factor to either plugging duty or
starting more than 25 times per hour, where
the rms current cannot be easily calculated.
~37.5-100% of sensor
Plug x pick up setting
1.5X - 12X of the LTPU
2X -15 or 30X of the trip current rating plug
Function of the withstand rating
20-60% sensor, <1200A
Function of the withstand rating
Function of the close and latch rating
53