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Protection Settings

29

TemBreak

PRO

P_BE-UM-001-EN V1.3.0

Short Time Delay Protection (STD)

The short time protection is designed to protect against low level short circuits.

Short Time Delay Settings Description

S

I

sd

(x I

r

)

Short Time Delay protection threshold

t

sd

(ms)

Short Time Delay

I²t (ON / OFF)

Inverse I²t time

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Summary of Contents for TemBreak PRO P

Page 1: ...Version 1 3 0 NHP Electrical Engineering Products AU 1300 NHP NHP NZ 0800 NHP NHP nhp com au nhp nz com P Model Moulded Case CircuitBreaker Basic Electronic Trip Unit from 160A up to630A USER MANUAL...

Page 2: ...ained in the technical documentation must be observed Publication of responsibility The contents of this document have been reviewed to ensure that the reliability of the information is correct at tim...

Page 3: ...t change the overall scope of the previous version but may include additional information which complements or corrects the previous version or provides additional clarity on an existing topic z Patch...

Page 4: ...4 Trip Curve 24 Long Time Delay LTD protection 25 Adjusting Ir Current 26 Adjusting tr Time Delay 27 Thermal memory Hot Cold start mode 28 Short Time Delay Protection STD 29 Adjusting Isd Current 30 A...

Page 5: ...basic understanding of electrical circuit protection topics including but not limited to Power distribution and reticulation Circuit protection devices Fault currents Arc faults Temperature rise and...

Page 6: ...GF Ground Fault Protection SN Solid Neutral hex Hexadecimal base 16 numbering system SSID Service Set Identifier name of the Wi Fi wireless network I or INST Instantaneous Protection STR String datat...

Page 7: ...r improved selectivity combinations between MCCBs or other circuit breaker types Features LSI or LSIG Setting by rotary dial Over temperature alarm LED Signalling the OCR LED status Ready Signalling P...

Page 8: ...25 2 30 3 35 e No of Poles 1 6 2 7 3 4 f Trip Unit Rating In In x A g Trip Unit Type TF Adj Thermal Fix Magnetic 3 FF Fix Thermal Fix Magnetic 3 FM Fix Thermal Adj Magnetic 8 TM Adj Thermal Adj Magnet...

Page 9: ...BEG P630N SE B800N TM B800N BE B800N SX B800N SE B1000N BE B1000N SX B1000N SE B1250N BE B1600N BE H 70 P160H TM P160H BE P160H BEG P160H SE P250H TM P250H BE P250H BEG P250H SE P400H TM P400H BE P400...

Page 10: ...E G 7 dial Adjustable LSIG Ground Fault Std Std Std Std Std Std BE Instantaneous only setting ICB 1 Std Std Std Std Std Std LT Adjustable 40 to 100 in 1 increments Std Std Std Std Std Std Instantaneou...

Page 11: ...dial Adjustable LSI Std Std Std Std BE G 7 dial Adjustable LSIG Ground Fault Std Std Std Std BE Instantaneous only setting ICB 1 Std Std Std Std LT Adjustable 40 to 100 in 1 increments Std Std Std St...

Page 12: ...SI Std Std Std Std BE G 7 dial Adjustable LSIG Ground Fault Std Std Std Std BE Instantaneous only setting ICB 1 Std Std Std Std LT Adjustable 40 to 100 in 1 increments Std Std Std Std Instantaneous se...

Page 13: ...ndicate whether an MCCB is in the Tripped or Not Tripped position ON OFF Alarm contacts come in either general purpose or micro switch type with some combinations pre wired or with terminals Each cont...

Page 14: ...rminal Instantaneous T2UV00LD02NT 24 All P160 250 Terminal Instantaneous T2UV00LD10NT 110 All P160 250 Terminal Instantaneous T2UV00LD20NT 230 All P160 250 Terminal Instantaneous T2UV00LA10DS 110 All...

Page 15: ...t the PTA output contact to send the pre trip alarm over a local signalling circuit Located on the outside left hand side of the MCCB MIP Maintenance Interface Port for temporary connection to OCR tes...

Page 16: ...nt electrical shock and damage to equipment disconnect and isolate power source upstream of the MCCB before installing or servicing the MCCB including its connected accessories Notice To ensure correc...

Page 17: ...g of the MCCB ensuring bare conductors are not exposed directly to concentrated ionised gases This also applies to the attached busbars supplied as part of the MCCB Interpole barriers or terminal cove...

Page 18: ...ance from lower breaker to open charging part of terminal on upper breaker front connection or the distance from lower breaker to upper breaker end rear connection and plug in type P160F 50 10 10 0 25...

Page 19: ...and UVTs Left side and right side mounting locations are independent and accept unique combinations For example shunts and UVTs may only be mounted on the right side whereas auxiliary and alarm contac...

Page 20: ...Installation Internal Accessory Mounting Locations 20 TemBreak PRO P_BE UM 001 EN V1 3 0 P250 internal accessories combination Legend...

Page 21: ...01 EN V1 3 0 P400 630 internal accessories combination Legend Notice Only 2 internal accessories can be mounted on the right hand side of a P400 and P630 MCCB Under no circumstances can 3 or more be i...

Page 22: ...pplied Installation Instructions for the respective accessories for further detail Standard Alarm Auxiliary installation Action Note 1 Switch the Smart MCCB to the Tripped Position 2 Open the front co...

Page 23: ...Switch the Smart MCCB to the Tripped Position 2 Open the front cover of the MCCB 3 Locate the shunt or UVT s trip bar into the MCCB trip mechanism slot 4 The shunt or UVT will need to be rolled into p...

Page 24: ...ons of upstream and downstream protection LSI 3 Pole LSIG 3 Pole LSI 4 Pole LSIG 4 Pole List of Protection Functions Abbreviation Description Protection against Symbol Definition L Long time delay LTD...

Page 25: ...protects against current overloads or surges in power distribution or motor control applications Long Time Delay protection is an inverse time protection which includes a thermal image function Long...

Page 26: ...8 29 44 32 31 28 34 34 04 37 36 8 40 100A Ir1 max 40 Ir1 max 45 Ir1 max 50 Ir1 max 57 Ir1 max 63 Ir1 max 72 Ir1 max 80 Ir1 max 87 Ir1 max 93 Ir1 max 100 36 8 40 41 4 45 46 50 52 44 57 57 96 63 66 24 7...

Page 27: ...ment Range seconds 0 5 1 5 2 5 5 7 5 9 10 12 14 16 Notice For the following MCCBs the setting of Ir and tr can limit the setting of Isd for STD protection P160_BE In 160A P250_BE In 250A If Ir 0 9 x I...

Page 28: ...ng continues to calculate the thermal value H even if the current is below the LTD pick up threshold As long as the OCR is powered self supply or external backup power the thermal imaging will continu...

Page 29: ...0 Short Time Delay Protection STD The short time protection is designed to protect against low level short circuits Short Time Delay Settings Description S Isd x Ir Short Time Delay protection thresh...

Page 30: ...MCCBs the setting of Ir and tr can limit the setting of Isd for STD protection P160_BE In 160A P250_BE In 250A If Ir 0 9 x In and tr 16s Isd is limited to 9 x Ir even if the dial is set to 10x Notice...

Page 31: ...or STD can be enabled by setting the tsd dial to a value on the right side or I2t disabled by setting a value on the left side For example The figure below displays tsd set to 100ms with I2t for STD a...

Page 32: ...y I2t K curve within the STD tripping section starting from the Isd threshold setting up to the Ii threshold setting The below graphic illustrates the difference between I2t enabled and disabled with...

Page 33: ...1 EN V1 3 0 The I2t curve is based on the setting of Ir The below time current graph illustrates the effect of the I2t curves calculated for different Ir settings Settings I2t ONLY base on Ir 630A Ful...

Page 34: ...to the end of LTD tripping curve starting from Itsp where constant K Max Ii x ttsp Max Ii is the maximum Ii settable on the trip unit and is not adjustable For the following MCCBs Itsp and ttsp value...

Page 35: ...s 15 The instantaneous protection has no adjustable time delay The non trip time is 10 ms with a maximum cut out time is 50 ms The li trip threshold can be adjusted from the Ii dial which is represent...

Page 36: ...me tolerance for ground protection is 20 ms 50 ms GF protection can be turned ON or OFF using the GF dial on 3P MCCBs by setting the dial to the ON or OFF position respectively For 4P MCCBs the N dial...

Page 37: ...time delays for the Neutral pole remain identical to the tr and tsd time delay adjustment values for the main phases and cannot be independently changed INST protection of the Neutral pole is not affe...

Page 38: ...nt 80 x Ir ORANGE Solid PTA output activated OCR Status GREEN Solid OCR operating normally ORANGE Flashing Internal OCR fault detected System Alarms System alarms are produced as a result of either an...

Page 39: ...The trip alarm on the P_OCR indicates the status of the LTD protection which if flashing indicates that an LTD trip is imminent Alarm Status type LED Status Description LTD Pick up Alarm OFF Current 1...

Page 40: ...ED and contact are unaffected and remain OFF and OPEN respectively As the load current increases to at or above Ip the Pre trip warning zone is entered and is indicated by the PTA LED illuminating FLA...

Page 41: ...tection functions Minimum conditions for energizing the trip unit without an external power supply Circuit breaker closed Minimum current through the circuit breaker below is a table per rating Trip u...

Page 42: ...le value of Ir in Amperes 3 If required turn the Ir2 fine adjustment dial to the required percentage of the maximum scale Ir1 as configured in the previous step NOTE To turn off LTD protection set Ir2...

Page 43: ...Note Illustration 1 Turn the MCCB to the OFF Position Open the transparent flap to access lsd adjustment dials 2 Using a PH1 PH2 or PZ2 size screwdriver rotate the Isd adjustment dial to the required...

Page 44: ...which is performed as follows Refer to Protection Settings Instantaneous Protection INST section for further detail on setting Ii Action Note Illustration 1 Turn the MCCB to the OFF Position Open the...

Page 45: ...follows Refer to Protection Settings Instantaneous Protection INST section for further detail on setting Ii Action Note Illustration 1 Turn the MCCB to the OFF Position Open the transparent flap to a...

Page 46: ...able GF protection and is performed as follows Refer to Protection Settings Ground Earth Fault Protection GF section for further detail on GF protection Action Note Illustration 1 Turn the MCCB to the...

Page 47: ...Settings Ground Earth Fault Protection GF and Neutral Protection NP sections for further detail on NP and GF protection Action Note Illustration 1 Turn the MCCB to the OFF Position Open the transpare...

Page 48: ...requirements in TemBreak PRO P_BE Installation Instructions supplied with MCCB Increased contact resistance loose internal connection or contact failure Replace MCCB High proportion of high frequency...

Page 49: ...tor and or starter manufacturer Short circuit in motor e g windings starter circuit Verify and correct any issues with motor wiring Inspect and verify motor winding insulation Refer to motor manufactu...

Page 50: ...50 TemBreak PRO P_BE UM 001 EN V1 3 0 Annex A Dimensions P160 Dimensions...

Page 51: ...Annex A Dimensions 51 TemBreak PRO P_BE UM 001 EN V1 3 0 P250 Dimensions...

Page 52: ...Annex A Dimensions 52 TemBreak PRO P_BE UM 001 EN V1 3 0 P400 Dimensions...

Page 53: ...Annex A Dimensions 53 TemBreak PRO P_BE UM 001 EN V1 3 0 P630 Dimensions...

Page 54: ...ble protection settings with fine adjustment to pick up current and time delay for the various respective trip curves which can change depending on the application To aide in selectivity studies a tri...

Page 55: ...55 TemBreak PRO P_BE UM 001 EN V1 3 0 Annex C I2t Let Through Curves P160_BE...

Page 56: ...Annex C I2t Let Through Curves 56 TemBreak PRO P_BE UM 001 EN V1 3 0 P250_BE...

Page 57: ...Annex C I2t Let Through Curves 57 TemBreak PRO P_BE UM 001 EN V1 3 0 P400_BE...

Page 58: ...Annex C I2t Let Through Curves 58 TemBreak PRO P_BE UM 001 EN V1 3 0 P630_BE...

Page 59: ...59 TemBreak PRO P_BE UM 001 EN V1 3 0 Annex D Peak Let Through Curves P160_BE...

Page 60: ...Annex D Peak Let Through Curves 60 TemBreak PRO P_BE UM 001 EN V1 3 0 P250_BE...

Page 61: ...Annex D Peak Let Through Curves 61 TemBreak PRO P_BE UM 001 EN V1 3 0 P400_BE...

Page 62: ...Annex D Peak Let Through Curves 62 TemBreak PRO P_BE UM 001 EN V1 3 0 P630_BE...

Page 63: ...ipation per pole Pole numbers AC Power dissipation per product In A Z m Power W Power W P160 40 A 0 35 0 56 3P 4P 1 68 100 A 0 35 3 50 10 5 160 A 0 35 9 27 P250 40 A 0 24 0 38 3P 4P 1 2 100 A 0 24 2 4...

Page 64: ...50 250 250 P400 250A 250 250 250 250 250 250 250 250 250 400A 400 400 400 400 400 400 400 258 9 318 5 P630 630A 630 630 630 630 630 615 560 497 434 Rated Temperature Ampere frame Connection type Rated...

Page 65: ...65 TemBreak PRO P_BE UM 001 EN V1 3 0 This page is intentionally left blank...

Page 66: ...P_BE UM 001 EN Version 1 3 0 Published 29th April 2021 NHP Electrical Engineering Products AU 1300 NHP NHP NZ 0800 NHP NHP nhp com au nhp nz com...

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