GE EntelliGuard G - Table 3.3. Selectivity with Entelliguard TU Trip Units in ANSI and ICCB; Power Break II Circuit Breakers

DET-653C EntelliGuard
®
G Circuit Breaker Application Guide
24-May-12 Section 3. EntelliGuard TU Trip Unit System
©2012 General Electric All Rights Reserved
13
Table 3.3. Selectivity with EntelliGuard TU Trip Units in ANSI and ICCB/ Power Break II Circuit Breakers
Downstream device with
EntelliGuard TU Trip Unit
Power Break II,
UL 489 CB
WavePro or AKR,
ANSI CB
EntelliGuard G,
ANSI/UL Std I
EntelliGuard
G, ANSI Ext I
Max Instantaneous in X
Max Instantaneous in X
Frame determines
maximum
instantaneous
pickup (X) for PB II
and WP CB.
Plug/Icw ratio
determines
maximum possible
for EntelliGuard
GCB. EntelliGuard
values shown are
more maximum
withstand tiers.
800A frame
15
15
15
30
1600A frame
15
15
15
30
2000A frame
15
15
15
30
3000A frame
13
N/A
15
30
3200A frame
N/A
13
15
30
4000A frame
10
10
15
23
5000A frame
N/A
7
15
19
6000A frame
(UL 489 only)
N/A
N/A
15
N/A
Amperes per above multipliers
800A frame,
800A plug
12,000
12,000
12,000
24,000
1600A frame,
1600A plug
24,000 24,000 24,000
48,000
2000A frame,
2000A plug
30,000
30,000
30,000
60,000
3000A frame,
3000A plug
39,000 N/A 45,000 90,000
3200A frame,
3200A plug
N/A
41,600
48,000
96,000
4000A frame,
4000A plug
40,000 40,000 60,000 92,000
5000A frame,
5000A plug
N/A
35,000
75,000
95,000
6000A frame,
6000A plug
N/A N/A 90,000 N/A
• Maximum instantaneous is a multiple of rating plug. The above values may be lower if a smaller rating plug than maximum for frame is used. In PB II &
WavePro circuit breakers, the maximum instantaneous multiplier is limited by frame rating. In EntelliGuard G, the maximum Instantaneous X may be
limited by circuit breaker withstand or short time rating (also known as Icw). The current numbers above multiplied by 0.9 provide maximum selectivity
above non-current limiting if instantaneous is adjusted to maximum and no zone selective interlocking is used.
Note: For complete listing of all selectivity functionalities see publication DET-537D