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

I.B. 29C891B

Page vi

Effective 11/98

LIST OF FIGURES

Figure

Title

Page

1-1

Series C L-Frame Molded Case Circuit Breaker with OPTIM Trip Unit .....................................................2

1-2

SPB Systems Pow-R Circuit Breaker with OPTIM Trip Unit......................................................................2

1-3

DSII Power Circuit Breaker with OPTIM Trip Unit .....................................................................................2

1-4

Family of Digitrip OPTIM Trip Unit Rating Plugs........................................................................................3

1-5

Family of Digitrip Trip Units Comparison ...................................................................................................3

1-6

Hand Held Programmer in Use..................................................................................................................4

1-7

Breaker Interface Module in Service..........................................................................................................4

1-8

Monitor and Control from Central PC ........................................................................................................5

1-9

Typical System Configurations ..................................................................................................................6

2-1

Typical OPTIM Trip Unit Circuitry (DSII Type Circuit Breaker Shown) ......................................................8

2-2

OPTIM Trip Unit Mounted in Series C L-Frame Circuit Breaker (K-Frame is Similar)...............................9

2-3

OPTIM Trip Unit Mounted in Series C N-Frame Circuit Breaker ...............................................................9

2-4

Front View of L-Frame Type OPTIM Trip Unit (K and N-Frame Designs are Similar).............................10

2-5

K, L and N-Frame Type OPTIM Trip Unit Battery Compartment .............................................................10

2-6

K, L and N-Frame Type OPTIM Trip Unit Programming Port ..................................................................11

2-7

OPTIM Trip Unit Mounted in Series C R-Frame Circuit Breaker .............................................................11

2-8

OPTIM Trip Unit Mounted in SPB Circuit Breaker ...................................................................................12

2-9

OPTIM Trip Unit Mounted in DSII Circuit Breaker ...................................................................................12

2-10

Front View of R-Frame, SPB and DSII/DSLII Type OPTIM Model 1050 Trip Unit
with R-Frame Rating Plug Installed .........................................................................................................13

2-11

R-Frame, SPB and DSII/DSLII Type OPTIM Trip Unit Battery Compartment .........................................13

2-12

OPTIMizer Shown Connected to Programming Port of DSII Type Circuit Breaker .................................14

2-13

Family of OPTIM Trip Unit Ratings Plugs ................................................................................................14

2-14

Power Accessory Requirements for K, L and N-Frame Circuit Breakers ................................................15

2-15

Externally Mounted Potential Transformer Module (necessary for K, L and N-Frame only) ...................16

2-16

Ground Fault Alarm Indicator (necessary for K, L and N-Frame only) ....................................................16

3-1

Sample of Partial Time-Current Trip Curve .............................................................................................21

3-2

Typical Trip Curve Horizontal Movement.................................................................................................21

3-3

Typical Long Delay Time Slope Adjustment ............................................................................................21

3-4

Overcurrent Protective Function Combinations .......................................................................................25

3-5

Typical OPTIM Trip Unit Time-Current Curve (10 Curve Shaping Adjustments).....................................26

3-6

Typical Long Delay Setting Adjustment ...................................................................................................27

3-7

Typical Long Delay Time Adjustment (I

2

t) Response ..............................................................................27

3-8

Typical Long Delay Time Adjustment (I

4

t) Response ..............................................................................28

3-9

Typical Short Delay Pickup Adjustment...................................................................................................28

3-10

Typical Short Delay Time Adjustment, Flat Response ............................................................................29

3-11

Typical Short Delay Time Adjustment, (I

2

t) Response.............................................................................29

3-12

Multi-layer Ground Fault Protection Scheme Using Zone Selective Interlocking ....................................30

3-13

Typical Instantaneous Pickup Adjustment ...............................................................................................31

3-14

Ground Fault Alarm LED .........................................................................................................................32

3-15

Typical Ground Fault Pickup Adjustment.................................................................................................33

3-16

Typical Ground Fault Time Delay Adjustment, Flat Response ................................................................33

3-17

Typical Ground Fault Time Delay Adjustment, (I

2

t) Response ................................................................33

3-18

Typical Waveform and Harmonic Display................................................................................................36

3-19

Auxiliary Power Module ...........................................................................................................................38

3-20

Typical Performance Test Record Form..................................................................................................39