Cutler-Hammer Digitrip OPTIM 1050, Instruction For Operation And Maintenance

I.B. 29C891B

Page 24

Effective 11/98

TRIP UNIT TYPE

DIGITRIP OPTIM 1050

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 

➀ ➁

No

Yes Yes

Yes

LSIG 

➀ ➁

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

Yes

Yes

Yes

Yes

Power Quality - Harmonics

Yes

Yes

Yes

Yes

Power Factor

Yes

Yes

Yes

Yes

COMMUNICATIONS

IMPACC

Yes

Yes

Yes

Yes

TESTING

Testing Method 

OPT, BIM, IMPACC

OPT, BIM, IMPACC

OPT, BIM, IMPACC 

OPT, BIM,

Secondary Injection

Table 3.4  Digitrip OPTIM 1050 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 Tol0-30%

➄

Setting Tol10-40%

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

11

11