nulec_capm4_notes.pdf

Setting NU-LEC CAPM4 Recloser Controllers

in the

Computer-Aided Protection Engineering System

(CAPE)

Prepared for

CAPE Users' Group

June 20-21, 2000

Electrocon International, Inc. Georgia Power Company

Ann Arbor, Michigan Atlanta, Georgia

This document is the sole property of Electrocon International, Inc. and is provided to theCAPE Users Group for its own use only. It may not be supplied to any third party, orcopied or reproduced in any form, without the express written permission of ElectroconInternational, Inc. All copies and reproductions shall be the property of ElectroconInternational, Inc. and must bear this ownership statement in its entirety.

Setting NU-LEC CAPM4 Recloser 2000 Users’ Group Meeting

1

Application Notes on Setting NU-LEC CAPM4 Recloser Controllers

I. Recloser Models

This is a summary of the data a CAPE user must provide for the NU-LEC SwitchgearOperating System model CAPM-4.

Typical STYLE used in CAPE is as follows:

Style Properties

CAPM-4 General purpose controller style for model CAPM4, suitable foruse with all applicable NU-LEC switchgear.

For details of the recloser, refer to the description in the NU-LEC Publication N00-101(Switchgear Operating System User Manual) and to NU-LEC’s recloser setting program,Windows SOS.

II. Recloser Elements

The recloser contains phase, ground and SEF (sensitive earth fault) overcurrent elements,with separate settings possible for each of up to four operations.

Element Description

Ground TCC1 Ground operation on 1st shot

Ground TCC2 Ground operation on 2nd shot

Ground TCC3 Ground operation on 3rd shot

Ground TCC4 Ground operation on 4th shot

Phase TCC1 Phase operation on 1st shot

Phase TCC2 Phase operation on 2nd shot

Phase TCC3 Phase operation on 3rd shot

Phase TCC4 Phase operation on 4th shot

SEF TCC1 Sensitive Earth Fault operation on 1st shot

SEF TCC2 Sensitive Earth Fault operation on 2nd shot

SEF TCC3 Sensitive Earth Fault operation on 3rd shot

SEF TCC4 Sensitive Earth Fault operation on 4th shot

III. Overcurrent Timing Curves

There are eight NU-LEC timing curves defined by equations. The following table lists theparameters used for each curve model:


2

Polynomial Terms

Curve Type Code 1 2 3 4 5 6Definite Time 5 1 0 0 0 0 0

IEC 255 Extremely Inverse 8 80 2 1 1 0 0

IEC 255 Standard Inverse 8 0.14 0.02 1 1 0 0

IEC 255 Very Inverse 8 13.5 1 1 1 0 0

IEEE Std. Extremely Inverse 9 28.2 0 2 1 0.1217 0

IEEE Std. Moderately Inverse 9 0.0515

0 0.02 1 0.114 0

IEEE Std. Very Inverse 9 19.61 0 2 1 0.491 0

Instantaneous 5 0.01 0 0 0 0 0

In addition, there are a number of timing curves defined by data points, which are similarto the curves defined for the Cooper Form 4C, as listed below:

TCC010 TCC114 TCC133 TCC152









TCC112 TCC131 TCC142

TCC113 TCC132 TCC151

IV. Recloser Taps

When placing a recloser, set the following taps. Only the settings with Internal Nameshown in bold are actually used in the Program Model for this recloser. Note: the CAPM 2and CAPM 4 both use the same program model within CAPE.

All currents are set as primary amps or as multiples of another pickup setting.

Tap Name Internal Name Tap DescriptionsAuto Reclose AUTO_RCLS ON/OFF

Ground Protection GND_PROT ON/OFF

SEF Protection SGF_PROT ON/OFF

Cold Load Pickup CLP_PROT ON/OFF

Work Tag WORK_TAG ON/OFF


3

Phase Trip Current PHS_MIN_TRIP 10 – 1260 Amps

Earth Trip Current GND_MIN_TRIP 10 – 1260 Amps

SEF Trip Current SGF_MIN_TRIP 4 – 20 Amps

Phase Threshold Mult. PHS_THRSH_MULT 1.0 – 10.0

Earth Threshold Mult. GND_THRSH_MULT 1.0 – 10.0

Cold Load Multiplier CLP_MULT 1.0 – 5.0

Cold Load Time CLP_TIME 1 – 480 min

Single Shot Trip SS_TRIP 1 – 4

Single Shot Time SS_TIME 1 - 180 sec

Reset Time RESET_TIME 5 – 180 sec

Trips to Lockout LO_TRIP 1 - 4

SEF Trips to Lockout SGF_LO_TRIP 1 – 4

Loss of Phase Protection LOP_PROT ON/OFF

Loss of Phase Volts LOP_VOLTS 1000 – 15000 volts

Loss of Phase Timeout LOP_TIME 0.1 – 100.0 sec

SEF Availability SGF_AVAIL ON/OFF

Fault Reset Time FLT_RESET_TIME 50 - 800 ms

Maximum Time MAX_TIME 2.0 - 180.0 sec, OFF

Sequence Control SEQ_CTRL ON/OFF

Live Load Blocking LLB_PROT ON/OFF

Phase Protection Type 1 PHS_TCC1_ID CAPM-4 Time Curves

Phase Time Multiplier 1 PHS_TCC1_TMULT 0.05 – 2.00

Phase Definite Time 1 PHS_TCC1_DEFTIME 0.5 – 100 sec

Phase Instantaneous 1 PHS_TCC1_INST_MULT 1 –30, OFF

Phase Minimum Time 1 PHS_TCC1_TMIN 0.0 – 2.0 sec

Phase Additional Time 1 PHS_TCC1_ADDER 0.0 – 2.0 sec

Earth Protection Type 1 GND_TCC1_ID CAPM-4 Time Curves

Earth Time Multiplier 1 GND_TCC1_TMULT 0.05 – 2.00

Earth Definite Time 1 GND_TCC1_DEFTIME 0.5 – 100 sec

Earth Instantaneous 1 GND_TCC1_INST_MULT 1 –30, OFF

Earth Minimum Time 1 GND_TCC1_TMIN 0.0 – 2.0 sec

Earth Additional Time 1 GND_TCC1_ADDER 0.0 – 2.0 sec

Dead Time 1 TCC1_DEAD_TIME 0.5 – 180 sec

SEF Definite Time 1 SGF_TCC1_DEFTIME 0.5 – 180 sec







4





































High Current Lockout HCL_PROT ON/OFF

HCL Lockout Current HCL_AMPS 10 – 16000 Amps

HCL Active Trip Number HCL_TRIP 1 – 4


5

Inrush Restraint INRUSH_PROT ON/OFF

Inrush Restraint Time INRUSH_TIME 0.05 - 30.0 sec

Inrush Restraint Multiplier INRUSH_MULT 1 - 30

V. Element Settings

On the element forms, set only the necessary contact logic codes; other settings are takenfrom the common taps. You can also change the settings from CAPE CG using the forms orusing DRAG_CURVE. The new common taps are computed automatically from theelement settings.

VI. Contact Logic

Suggested contact logic codes:

Element Contact Logic CodeGround TCC1 GND_TCC1

Ground TCC2 GND_TCC2



Phase TCC1 PHS_TCC1

Phase TCC2 PHS_TCC2

Phase TCC3 PHS_TCC3

Phase TCC4 PHS_TCC4

SEF TCC1 SEF_TCC1

SEF TCC2 SEF_TCC2

SEF TCC3 SEF_TCC3

SEF TCC4 SEF_TCC4

If there are duplicates from other reclosers in the same LZOP, you may add the prefix"CAPM_" , e.g. "CAPM_GND_TCC1".

The LZOP LOGIC (e.g. CAPM_TRIP) for all elements is

PHS_TCC1 OR PHS_TCC2 OR PHS_TCC3 OR PHS_TCC4 ORGND_TCC1 OR GND_TCC2 OR GND_TCC3 OR GND_TCC4 ORSEF_TCC1 OR SEF_TCC2 OR SEF_TCC3 OR SEF_TCC4

To prevent an element from tripping the logical breakers in its local zone of protection(LZOP), omit its contact-logic code from this expression. For only the first trip elements,the expression would be:

PHS_TCC1 OR GND_TCC1 OR SEF_TCC1

nulec_capm4_notes.pdf

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