NHP TemBreak PRO - User Manual

Version
1.1.0
NHP Electrical Engineering Products
AU 1300 NHP NHP
NZ 0800 NHP NHP
nhp.com.au
nhp-nz.com
B Model Moulded Case Circuit Breaker
Basic Electronic
Trip Unit from 250A up to 1600A
USER MANUAL

Summary

Using this manual

Safety Precautions

General safety warnings and advice for operating and maintaining the equipment.

Summary of Changes

Introduction

Who Should Use This Manual?

Identifies the target audience and required technical understanding for using the manual.

Additional resources

Lists other related documents for comprehensive understanding of the product.

Terminology and Abbreviations

Product Information

Features

Highlights key characteristics and capabilities of the TemBreak PRO B_BE MCCB.

Protection Functions

Outlines the various overcurrent and protection functions available in the MCCB.

Part Number Break Down

Explains the structure and meaning of different components of the product's part number.

Available MCCBs in the TemBreak PRO range

Lists the different MCCB models available within the TemBreak PRO series.

Label Identification

Details how to identify and understand the information presented on the MCCB label.

B250_BE & B400_BE Information

Provides detailed technical specifications for B250_BE and B400_BE MCCB models.

B800_BE Information

Provides detailed technical specifications for B800_BE MCCB models.

B1000_BE & B1250_BE Information

Provides detailed technical specifications for B1000_BE and B1250_BE MCCB models.

B1600_BE Information

Provides detailed technical specifications for B1600_BE MCCB models.

Internal Accessories

Auxiliary & Alarm Switches

Details the function, types, and part numbers for auxiliary and alarm switches.

Shunt Trip

Explains the Shunt Trip function, its purpose, and voltage ratings.

Under Voltage Trips

Describes the Under Voltage Trip (UVT) function and compatible MCCB models.

Plugs and Ports

Installation

Precautions

Important safety warnings and notices to follow before and during installation.

Mounting Angles

Information regarding the permissible mounting orientations for the MCCBs.

Direction of Power Supply

Guidance on the accepted directions for feeding power into the MCCB.

Clearances

Specifies the required safe distances between components and conductors during installation.

Insulating Distance

Details minimum clearance requirements for maintaining electrical insulation.

Internal Accessory Mounting Locations

Illustrates where internal accessories can be mounted within different MCCB frame sizes.

Alarm, Shunt & UVT Installation

Step-by-step instructions for installing alarm, shunt, and UVT accessories.

Shunt & UVT installation

Step-by-step instructions for installing shunt and UVT accessories.

Protection Settings

Trip Curve

Explains the concept of trip curves and their role in overcurrent protection.

List of Protection Functions

Provides a comprehensive list and definition of all protection functions offered.

Pre-Defined Curves

Details the available pre-defined protection curves and their characteristics.

Long Time Delay Protection (LTD)

Explains the LTD protection, its purpose, and adjustment parameters.

Adjusting Ir (Current)

Guide on setting the pickup current (Ir) for Long Time Delay protection.

Adjusting tr (Time Delay)

Explains how to adjust the time delay (tr) for Long Time Delay protection.

Short Time Delay Protection (STD)

Details the Short Time Delay protection, its application, and settings.

Adjustment Isd (Current)

Guide on setting the pickup current (Isd) for Short Time Delay protection.

Adjusting tsd (Time Delay)

Explains how to adjust the time delay (tsd) for Short Time Delay protection.

Instantaneous Protection (INST)

Describes the Instantaneous protection, its purpose, and settings.

Adjusting Ii (Current)

Guide on setting the pickup current (Ii) for Instantaneous protection.

Ground;Earth Fault Protection (GF)

Details the Ground/Earth Fault protection, its availability, and fixed settings.

Neutral Protection (NP)

Explains Neutral Protection, its availability, and adjustment via DIP switches.

Alarms & Indication

Overload alarm

Describes the overload alarm and its LED indication for current status.

Pre-Trip alarm (PTA)

Details the optional Pre-Trip Alarm function and its LED indication.

PTA (Pre-Trip Alarm)

Explains the PTA settings, zones, and LED behavior for early overload warning.

Connections and contact specification

Specifies power supply connections and contact ratings for the PTA output.

Commissioning

LTD Adjustments (Ir)

Step-by-step guide for configuring the LTD protection pickup current (Ir).

Pre-Defined Curve Selection

Instructions for selecting the appropriate pre-defined protection curves.

INST Protection Only Setting

How to configure the MCCB for Instantaneous protection only.

LSIG 3 P - GF Protection Adjustments (Ig)

Configuration steps for Ground Fault protection on LSIG 3P variants.

LSIG 4 P - NP and GF Protection Adjustments (IN)

Configuration steps for Neutral and Ground Fault protection on LSIG 4P variants.

Troubleshooting

Annex A - Dimensions

B250 P

Provides detailed dimensional drawings and specifications for the B250P model.

B250

Provides detailed dimensional drawings and specifications for the B250 model.

B400 P; R

Provides detailed dimensional drawings and specifications for the B400P/R models.

B800 N; H; G

Provides detailed dimensional drawings and specifications for B800N/H/G models.

B800 P; R

Provides detailed dimensional drawings and specifications for the B800P/R models.

B1000 N; H

Provides detailed dimensional drawings and specifications for the B1000N/H models.

B1250 N; H; HL

Provides detailed dimensional drawings and specifications for B1250N/H/HL models.

B1600 N; HL

Provides detailed dimensional drawings and specifications for the B1600N/HL models.

Annex B - Time Current Curves

B250_BE - In 40 A

Displays time-current characteristic curves for the B250_BE with 40A rated current.

B250_BE - In 125 A

Displays time-current characteristic curves for the B250_BE with 125A rated current.

B250_BE - In 250 A

Displays time-current characteristic curves for the B250_BE with 250A rated current.

B400_BE - In 250 A

Displays time-current characteristic curves for the B400_BE with 250A rated current.

B400_BE - In 400 A

Displays time-current characteristic curves for the B400_BE with 400A rated current.

B800_BE - In 630 A

Displays time-current characteristic curves for the B800_BE with 630A rated current.

B800_BE - In 800 A

Displays time-current characteristic curves for the B800_BE with 800A rated current.

B1000_BE - In 1000 A

Displays time-current characteristic curves for the B1000_BE with 1000A rated current.

B1250_BE - In 1250 A

Displays time-current characteristic curves for the B1250_BE with 1250A rated current.

B1600_BE - In 1600 A

Displays time-current characteristic curves for the B1600_BE with 1600A rated current.

Annex C - I²t Let-Through Curves

B250 P

Shows I²t let-through energy curves for the B250P model.

B400 P; R

Shows I²t let-through energy curves for the B400P/R models.

B800 N; H; G

Shows I²t let-through energy curves for the B800N/H/G models.

B800 P; R

Shows I²t let-through energy curves for the B800P/R models.

B1000 N; H

Shows I²t let-through energy curves for the B1000N/H models.

B1250 N; H; HL

Shows I²t let-through energy curves for the B1250N/H/HL models.

B1600 N; HL

Shows I²t let-through energy curves for the B1600N/HL models.

Annex D - Peak Let-through Curves

B250 P

Shows peak let-through current curves for the B250P model.

B400 P; R

Shows peak let-through current curves for the B400P/R models.

B800 N; H; G

Shows peak let-through current curves for the B800N/H/G models.

B800 P; R

Shows peak let-through current curves for the B800P/R models.

B1000 N; H

Shows peak let-through current curves for the B1000N/H models.

B1250 N; H; HL

Shows peak let-through current curves for the B1250N/H/HL models.

B1600 N; HL

Shows peak let-through current curves for the B1600N/HL models.

Annex E - Watts Loss

Impedance Watts Loss

Presents data on impedance and calculated watts loss for different MCCB models.

Annex F - Temperature Ratings Tables

NHP TemBreak PRO Specifications

General

Brand	NHP
Model	TemBreak PRO
Category	Circuit breakers
Language	English