GE Industrial Solutions Spectra RMS Molded Case User Manual
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GEH-702 Users Manual
Language (Standard)
This setpoint is used to establish the language that is
displayed in the LCD. The available language choices
are English, French, Spanish, German, and Chinese. The
default language is English.
Long Time Pickup (Standard)
This setpoint is used in establishing the breaker’s nominal
ampere rating and is a function of the rating plug installed
in the trip unit. The breaker’s nominal ampere rating “C”,
is calculated by multiplying the long time pickup value
times the rating plug value “X”. The available range of
long time pick up values is 0.5 to 1.0 in increments of 0.05.
Example:
Rating Plug = 800 amps
LT Pickup Setting = 0.50
LT Pickup Value = Nominal Ampere Rating “C” =
800 amps x 0.50 = 400 amps
Figure 8. Long Time Pickup
Long Time Delay (Standard)
This set point is used to allow momentary overloads
without nuisance tripping the breaker. It is also used to
establish the shape of the thermal portion of the time
current curve. Three different long time curve shapes
are available:
MVT > proportional to current squared; same as
Spectra MicroVersaTrip
®
TCC
C > similar to thermal magnetic circuit breaker TCC
F > proportional to current to the fourth power;
similar to fuse TCC
The nominal time delays for each setting are listed below.
Table 15. Nominal Time Delays
Band
Delay (sec)
@ 600%
Band
Delay (sec)
@ 600%
Band
Delay (sec)
@ 300%
MVT1
3
C1
0.3
F1
0.2
MVT2
6
C2
0.5
F2
0.4
MVT3
12
C3
0.8
F3
0.8
MVT4
25
C4
1.2
F4
2
C5
2
F5
4
C6
3
F6
10
C7
5
F7
20
C8
7
C9
12
C10
18
Note: The MVT4, and C10 settings are not available on Spectra G Frame.
Figure 9. Long Time Delay