I.B. 29C891B
Page 23
Effective 11/98
TRIP UNIT TYPE DIGITRIP OPTIM 750
RMS Sensing Yes
Programmable Yes
CIRCUIT BREAKERS
Types Series C K, L and N-Frames»` Series C R-Frames SPB Pow-R DSII/DSLII Power
Ampere Range 70 - 1200A 800 - 2500A 200 - 5000A 100 - 5000A
Interrupting Rating @ 480V 30 thru 100KA 65 thru 100KA 50 thru 150KA 30 thru 200KA
TRIP UNIT ORDERING OPTIONS
LSI
➀➁ No Yes Yes Yes
LSIG
➀➁ Yes Yes Yes Yes
LSIA
➁ Yes Yes Yes Yes
PROTECTION AND COORDINATION
Interchangeable Rating Plug (I
n
) 70-1200A 800-2500A 200-5000A 100-5000A
Over-Temperature Trip Yes Yes Yes Yes
LONG DELAY PROTECTION
Long Delay Setting (I
r
) ➂ 0.4 - 1.0 x I
n
(0.01 steps) 0.4 - 1.0 x I
n
(0.01 steps) 0.4 - 1.0 x I
n
(0.01 steps) 0.4 - 1.0 x I
n
(0.01 steps)
Long Delay Pickup 116% of I
r
116% of I
r
116% of I
r
105% or I
r
Long Delay Time I
2
t @ 6 x I
r
➃ 2-24 secs (0.10 steps) 2-24 secs (0.10 steps) 2-24 secs (0.10 steps) 2-24 secs (0.10 steps)
Long Delay Time I
4
t @ 6 x I
r
(SDT Slope Flat only) ➄ 1-5 secs (0.10 steps) 1-5 secs (0.10 steps) 1-5 secs (0.10 steps) 1-5 secs (0.10 steps)
Long Delay Thermal Memory (Powered or Unpowered) Yes (programmable) Yes (programmable) Yes (programmable) Yes (programmable)
High Load Alarm 0.5 - 1.0 x I
r
0.5 - 1.0 x I
r
0.5 - 1.0 x I
r
0.5 - 1.0 x I
r
SHORT DELAY PROTECTION
Short Delay Pickup ➂ 1.5 - 8.0 x I
r
(0.1 steps) 1.5 - 8.0 x I
r
(0.1 steps) 1.5 - 8.0 x I
r
(0.1 steps) 1.5 - 10.0 x I
r
(0.1 steps)
(400 - 3000A)
1.5 - 6.0 x I
r
(0.1 steps)
(4000 - 5000A)
Short Delay Time I
2
t @ 8 x I
r
➅ 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps)
Short Delay Time Flat
➅ 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps)
Zone Selective Interlocking Yes Yes Yes Yes
INSTANTANEOUS PROTECTION
Instantaneous Pickup
➆ 2.0 - 8.0 x I
n
(0.1 steps) 2.0 - 10.0 x I
n
(0.1 steps) 2.0 - 10.0 x I
n
(0.1 steps) 2.0 - 10.0 x I
n
(0.1 steps)
(1600 & 2000A) (400 - 3000A)
2.0 - 6.0 x I
n
(0.1 steps) 2.0 - 6.0 x I
n
(0.1 steps)
(2500A) (4000 & 5000A)
Discriminator Yes Yes Yes Yes
Override (Fixed Instantaneous)
➇ Yes Yes Yes Yes
GROUND FAULT PROTECTION
Ground Fault Alarm (not to exceed 1200A) ➈ 0.2 - 1.0 x I
s
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps)
Ground Fault Pickup (not to exceed 1200A)
➆ 0.2 - 1.0 x I
s
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps) 0.24 - 1.0 x I
n
(0.01 steps)
Ground Fault Delay I
2
t @ 0.62 x I
n
/I
s
➉ 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps)
Ground Fault Delay Flat 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps) 0.1 - 0.5 secs (0.01 steps)
Zone Selective Interlocking Yes Yes Yes Yes
Ground Fault Memory Yes Yes Yes Yes
SYSTEM MONITORING
Digital Display Yes (Using OPT or BIM) Yes (Using OPT or BIM) Yes (Using OPT or BIM) Yes (Using OPT or BIM)
Current Yes Yes Yes Yes
Cause of Trip LEDs Yes Yes Yes Yes
Magnitude of Trip Information Yes Yes Yes Yes
Remote Signal Contacts Yes Yes Yes Yes
Power and Energy No No No No
Power Quality - Harmonics No No No No
Power Factor No No No No
COMMUNICATIONS
IMPACC Yes Yes Yes Yes
TESTING
Testing Method OPT, BIM, IMPACC OPT, BIM, IMPACC OPT, BIM, IMPACC OPT, BIM, IMPACC +
Secondary Injection
Table 3.3 Digitrip OPTIM 750 Trip Unit System Capabilities Overview
➀ No ground fault alarm (A) provided
➁ Refer to para. 3-2.3 and Figure 3-4 for details
➂ Setting Tolerance ±5%
➃ Setting Tolerance +0-30%
➄ Setting Tolerance +10-40%
Notes:
I
n
= Rating Plug
I
r
= Long Delay Setting
I
s
= Sensor Rating
OPT = Hand Held Programmer (OPTIMizer)
BIM = Breaker Interface Module
➅ Setting Tolerance (See time-current curves)
➆ Setting Tolerance ±10%
➇ Setting Tolerance ±20%
➈ Only available with LSIA
➉ I
s
(L & N-Frame), I
n
(R-Frame, SPB, DSII/DSLII)
Contact factory or Vista for K-Frame availability
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