AS/NZS 3003:1999
Warning: Superseded Standard. This document has been replaced by:
AS/NZS 3003:2003Electrical installations - Patient treatment areas of hospitals and medical and dental practices
Specifies requirements in addition to those in the SAA Wiring Rules (AS 3000) for electrical installations in hospitals and medical and dental practices where electromedical procedures are performed on a regular basis. In addition, specifies requirements for cardiac-protected and body-protected electrical areas. Included in the appendices are typical forms for commissioning tests for patient treatment areas, methods of measuring magnetic fields and resistance calculations in equipotential areas.
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AS/NZS 3003:1999 ELECTRICAL INSTALLATIONS - PATIENT TREATMENT AREAS OF HOSPITALS AND MEDICAL AND DENTAL PRACTICES
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Applied parts, Type CF, Type BF or Type B
1.4.2 Authorized person
1.4.3 Body-protected electrical area
1.4.4 Body-type procedure
1.4.5 Cardiac-protected electrical area
1.4.6 Cardiac-type procedure
1.4.7 Equipotential terminal (EP terminal)
1.4.8 Exposed metal
1.4.9 Leakage protected circuit (LPC)
1.4.10 Leakage protective device (LPD)
1.4.11 Line isolation monitor (LIM)
1.4.12 Medical electrical equipment
1.4.13 Overload monitor
1.4.14 Patient-circuit
1.4.15 Patient equipotential area (EP area)
1.4.16 Patient equipotential junction (EP junction)
1.4.17 Patient location
1.4.18 Prospective hazard current
1.4.19 Protected electrical area
1.4.20 Return earth
1.4.21 Transformer-isolated supply
1.5 METHOD OF MARKING
SECTION 2 GUIDANCE
2.1 INTRODUCTION
2.2 AREA SELECTION
2.3 CLASSIFICATION SELECTION
SECTION 3 BODY-PROTECTED ELECTRICAL AREAS
3.1 GENERAL
3.2 SUPPLY WIRING
3.2.1 Low voltage a.c. supplies (including emergency power supplies)
3.2.2 Low voltage d.c. supplies
3.2.3 Extra-low voltage supplies
3.3 EARTHING
3.4 ACCESS TO LEAKAGE PROTECTIVE DEVICES AND LINE ISOLATION MONITORS
3.5 SOCKET-OUTLETS
3.5.1 Number and disposition
3.5.1.1 General
3.5.1.2 Cleaning purposes
3.5.2 Marking and identication of socket-outlets
3.5.3 Type of socket-outlet
3.6 RESIDUAL CURRENT DEVICES (RCDs)
3.6.1 General
3.6.2 Number of poles
3.6.3 Discrimination
3.6.4 Number of points controlled by RCDs
3.6.5 Indication
3.6.6 Marking
3.6.7 Access for testing
3.7 LOW VOLTAGE ISOLATED SUPPLIES
3.7.1 General
3.7.2 Isolating transformer
3.7.3 Overload monitor
3.7.4 Line isolation monitor
3.7.5 Overcurrent circuit-breaker
3.7.6 System prospective hazard current
3.7.7 Number and disposition
3.7.8 Access for testing
3.8 ISOLATING SWITCHES
3.9 MARKING
3.10 COMMISSIONING
SECTION 4 CARDIAC-PROTECTED ELECTRICAL AREAS
4.1 GENERAL
4.2 SUPPLY WIRING
4.2.1 Low voltage a.c. supplies (including emergency power supplies)
4.2.2 Low voltage d.c. supplies
4.2.3 Extra-low voltage supplies
4.3 EARTHING
4.3.1 General
4.3.2 Equipotential earthing system
4.3.3 Return earth
4.3.4 Patient equipotential terminal (EP terminal)
4.3.5 Earthing of permanently wired equipment
4.4 ACCESS TO LEAKAGE PROTECTIVE DEVICES AND LINE ISOLATION MONITORS
4.5 SOCKET-OUTLETS
4.5.1 Number and disposition
4.5.2 Marking and identication of socket-outlets
4.5.3 Type of socket-outlet
4.6 RESIDUAL CURRENT DEVICES (RCDs)
4.6.1 General
4.6.2 Number of poles
4.6.3 Discrimination
4.6.4 Number of points controlled by RCDs
4.6.5 Indication
4.6.6 Marking
4.6.7 Access for testing
4.7 ISOLATED SUPPLIES (OTHER THAN ELV)
4.7.1 General
4.7.2 Isolating transformer
4.7.3 Overload monitor
4.7.4 Line isolation monitor
4.7.5 Overcurrent circuit-breaker
4.7.6 System prospective hazard current
4.7.7 Number and disposition
4.7.8 Access for testing
4.8 ISOLATING SWITCHES
4.9 MARKING
4.10 COMMISSIONING
APPENDIX A RATIONALE FOR THE REQUIREMENTS OF THIS STANDARD
A1 DEFINITIONS
A2 GUIDANCE
A3 BODY-PROTECTED ELECTRICAL AREAS
A3.1 General
A3.2 Supply wiring
A3.3 Earthing
A3.4 Access to leakage protective devices and line isolation monitors
A3.5 Socket-outlets
A3.6 Residual current devices
A3.7 Low voltage isolated supplies
A3.8 Isolating switches
A3.9 Marking
A3.10 Commissioning
A4 CARDIAC-PROTECTED ELECTRICAL AREAS
A4.1 General
A4.2 Supply wiring
A4.3 Earthing
A4.4 Access to leakage protective devices and the line isolation monitors
A4.5 Socket-outlets
A4.6 Residual current devices (RCDs)
A4.7 Isolated supplies (other than ELV)
A4.8 Isolating switches
A4.9 Marking
A4.10 Commissioning
APPENDIX B PLANNING OF AREAS
B1 RATIONALE FOR DECIDING WHAT AREAS SHOULD BE WIRED AS BODY-PROTECTED ELECTRICAL AREAS OR AS CARDIAC-PROTECTED ELECTRICAL AREAS
B1.1 Types of medical procedures necessitating protection
B1.2 Types of protection
B2 RATIONALE FOR CHOOSING RCD-PROTECTED OR ISOLATION- PROTECTED SUPPLY SYSTEMS
B2.1 General
B2.2 Summary
B3 RATIONALE FOR DECIDING THE NUMBER AND DISPOSITION OF FINAL SUBCIRCUITS IN THE AREA
B3.1 Socket-outlets
B3.2 Number of protective devices
B4 TEMPORARY UPGRADING OF AREAS
APPENDIX C MARKING OF BODY-PROTECTED ELECTRICAL AREAS AND CARDIAC-PROTECTED ELECTRICAL AREAS
C1 BODY-PROTECTED ELECTRICAL AREA SIGNS
C2 CARDIAC-PROTECTED ELECTRICAL AREA SIGNS
APPENDIX D COMMISSIONING TESTS FOR BODY-PROTECTED ELECTRICAL AREAS AND CARDIAC-PROTECTED ELECTRICAL AREAS
D1 GENERAL
D2 FORMAT OF TEST REPORTS
D3 EXAMPLE OF COMMISSIONING TEST REPORT
D3.1 Body-protected electrical areas
D3.2 Cardiac-protected electrical area
D4 RCD COMMISSIONING TEST RESULTS
D5 LIM COMMISSIONING TEST RESULTS
APPENDIX E MEASURES FOR AVOIDING INTERFERENCE FROM MAGNETIC FIELDS
E1 GENERAL
E2 LOCATION OF EQUIPMENT
E3 UNDERFLOOR HEATING
APPENDIX F METHOD FOR MEASURING MAGNETIC FIELDS
APPENDIX G INSTRUMENT FOR MEASURING POTENTIAL DIFFERENCES IN AN INSTALLATION
APPENDIX H EARTHING OF PERMANENTLY WIRED ELECTRICAL EQUIPMENT IN EP AREAS
H1 GENERAL
H2 EQUIPMENT POWERED FROM DOUBLE-INSULATED ELV SUPPLIES
H2.1 General
H2.2 Interconnection of accessible conductive parts
H2.3 Earthing
H3 EQUIPMENT POWERED FROM SINGLE-INSULATED ELV SUPPLIES
H4 EQUIPMENT POWERED FROM PROTECTED LV SUPPLIES
H4.1 General
H4.2 Interconnection of accessible conductive parts
H4.3 Earthing
H5 EQUIPMENT POWERED FROM UNPROTECTED LV SUPPLIES
H5.1 General
H5.2 Interconnection and earthing of accessible conductive parts
APPENDIX I CALCULATIONS FOR EQUIPOTENTIAL EARTHING SYSTEMS
I1 REQUIREMENTS OF THE STANDARD
I2 EXAMPLES OF RESISTANCE CALCULATIONS
I2.1 General
I2.2 Equipotential earthing system
I2.3 Connections to the EP junction
APPENDIX J ADDITIONAL REQUIREMENTS FOR APPLICATION IN NEW ZEALAND
JI SCOPE
J2 DEFINITIONS
J2.1 Exposed conductive part
J2.2 Patient environment
J3 EQUIPMENT USED OUTSIDE OPERATING THEATRES AND DEDICATED BODY-PROTECTED AREAS
J4 GENERAL
J5 PROVISION OF EP SYSTEM
J6 FORM OF EP SYSTEM
J7 TOUCH VOLTAGE
J8 PIPELINE ISOLATORS
J9 CONNECTION OF ITEMS TO THE EQUIPOTENTIAL EARTHING SYSTEM
J9.1 Items to be connected to the equipotential earthing system (other than the EP junction)
J9.2 Items to be connected to the EP junction
J10 CONDUITS
J11 EQUIPMENT EP TERMINALS
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References
- AS/NZS 2500:1995
Guide to the safe use of electricity in patient care
Related Information
- 13.260 Protection against electric shock91.140.50 Electricity supply systems
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AS/NZS 3003:1999 ELECTRICAL INSTALLATIONS - PATIENT TREATMENT AREAS OF HOSPITALS AND MEDICAL AND DENTAL PRACTICES
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.3 REFERENCED DOCUMENTS
1.4 DEFINITIONS
1.4.1 Applied parts, Type CF, Type BF or Type B
1.4.2 Authorized person
1.4.3 Body-protected electrical area
1.4.4 Body-type procedure
1.4.5 Cardiac-protected electrical area
1.4.6 Cardiac-type procedure
1.4.7 Equipotential terminal (EP terminal)
1.4.8 Exposed metal
1.4.9 Leakage protected circuit (LPC)
1.4.10 Leakage protective device (LPD)
1.4.11 Line isolation monitor (LIM)
1.4.12 Medical electrical equipment
1.4.13 Overload monitor
1.4.14 Patient-circuit
1.4.15 Patient equipotential area (EP area)
1.4.16 Patient equipotential junction (EP junction)
1.4.17 Patient location
1.4.18 Prospective hazard current
1.4.19 Protected electrical area
1.4.20 Return earth
1.4.21 Transformer-isolated supply
1.5 METHOD OF MARKING
SECTION 2 GUIDANCE
2.1 INTRODUCTION
2.2 AREA SELECTION
2.3 CLASSIFICATION SELECTION
SECTION 3 BODY-PROTECTED ELECTRICAL AREAS
3.1 GENERAL
3.2 SUPPLY WIRING
3.2.1 Low voltage a.c. supplies (including emergency power supplies)
3.2.2 Low voltage d.c. supplies
3.2.3 Extra-low voltage supplies
3.3 EARTHING
3.4 ACCESS TO LEAKAGE PROTECTIVE DEVICES AND LINE ISOLATION MONITORS
3.5 SOCKET-OUTLETS
3.5.1 Number and disposition
3.5.1.1 General
3.5.1.2 Cleaning purposes
3.5.2 Marking and identication of socket-outlets
3.5.3 Type of socket-outlet
3.6 RESIDUAL CURRENT DEVICES (RCDs)
3.6.1 General
3.6.2 Number of poles
3.6.3 Discrimination
3.6.4 Number of points controlled by RCDs
3.6.5 Indication
3.6.6 Marking
3.6.7 Access for testing
3.7 LOW VOLTAGE ISOLATED SUPPLIES
3.7.1 General
3.7.2 Isolating transformer
3.7.3 Overload monitor
3.7.4 Line isolation monitor
3.7.5 Overcurrent circuit-breaker
3.7.6 System prospective hazard current
3.7.7 Number and disposition
3.7.8 Access for testing
3.8 ISOLATING SWITCHES
3.9 MARKING
3.10 COMMISSIONING
SECTION 4 CARDIAC-PROTECTED ELECTRICAL AREAS
4.1 GENERAL
4.2 SUPPLY WIRING
4.2.1 Low voltage a.c. supplies (including emergency power supplies)
4.2.2 Low voltage d.c. supplies
4.2.3 Extra-low voltage supplies
4.3 EARTHING
4.3.1 General
4.3.2 Equipotential earthing system
4.3.3 Return earth
4.3.4 Patient equipotential terminal (EP terminal)
4.3.5 Earthing of permanently wired equipment
4.4 ACCESS TO LEAKAGE PROTECTIVE DEVICES AND LINE ISOLATION MONITORS
4.5 SOCKET-OUTLETS
4.5.1 Number and disposition
4.5.2 Marking and identication of socket-outlets
4.5.3 Type of socket-outlet
4.6 RESIDUAL CURRENT DEVICES (RCDs)
4.6.1 General
4.6.2 Number of poles
4.6.3 Discrimination
4.6.4 Number of points controlled by RCDs
4.6.5 Indication
4.6.6 Marking
4.6.7 Access for testing
4.7 ISOLATED SUPPLIES (OTHER THAN ELV)
4.7.1 General
4.7.2 Isolating transformer
4.7.3 Overload monitor
4.7.4 Line isolation monitor
4.7.5 Overcurrent circuit-breaker
4.7.6 System prospective hazard current
4.7.7 Number and disposition
4.7.8 Access for testing
4.8 ISOLATING SWITCHES
4.9 MARKING
4.10 COMMISSIONING
APPENDIX A RATIONALE FOR THE REQUIREMENTS OF THIS STANDARD
A1 DEFINITIONS
A2 GUIDANCE
A3 BODY-PROTECTED ELECTRICAL AREAS
A3.1 General
A3.2 Supply wiring
A3.3 Earthing
A3.4 Access to leakage protective devices and line isolation monitors
A3.5 Socket-outlets
A3.6 Residual current devices
A3.7 Low voltage isolated supplies
A3.8 Isolating switches
A3.9 Marking
A3.10 Commissioning
A4 CARDIAC-PROTECTED ELECTRICAL AREAS
A4.1 General
A4.2 Supply wiring
A4.3 Earthing
A4.4 Access to leakage protective devices and the line isolation monitors
A4.5 Socket-outlets
A4.6 Residual current devices (RCDs)
A4.7 Isolated supplies (other than ELV)
A4.8 Isolating switches
A4.9 Marking
A4.10 Commissioning
APPENDIX B PLANNING OF AREAS
B1 RATIONALE FOR DECIDING WHAT AREAS SHOULD BE WIRED AS BODY-PROTECTED ELECTRICAL AREAS OR AS CARDIAC-PROTECTED ELECTRICAL AREAS
B1.1 Types of medical procedures necessitating protection
B1.2 Types of protection
B2 RATIONALE FOR CHOOSING RCD-PROTECTED OR ISOLATION- PROTECTED SUPPLY SYSTEMS
B2.1 General
B2.2 Summary
B3 RATIONALE FOR DECIDING THE NUMBER AND DISPOSITION OF FINAL SUBCIRCUITS IN THE AREA
B3.1 Socket-outlets
B3.2 Number of protective devices
B4 TEMPORARY UPGRADING OF AREAS
APPENDIX C MARKING OF BODY-PROTECTED ELECTRICAL AREAS AND CARDIAC-PROTECTED ELECTRICAL AREAS
C1 BODY-PROTECTED ELECTRICAL AREA SIGNS
C2 CARDIAC-PROTECTED ELECTRICAL AREA SIGNS
APPENDIX D COMMISSIONING TESTS FOR BODY-PROTECTED ELECTRICAL AREAS AND CARDIAC-PROTECTED ELECTRICAL AREAS
D1 GENERAL
D2 FORMAT OF TEST REPORTS
D3 EXAMPLE OF COMMISSIONING TEST REPORT
D3.1 Body-protected electrical areas
D3.2 Cardiac-protected electrical area
D4 RCD COMMISSIONING TEST RESULTS
D5 LIM COMMISSIONING TEST RESULTS
APPENDIX E MEASURES FOR AVOIDING INTERFERENCE FROM MAGNETIC FIELDS
E1 GENERAL
E2 LOCATION OF EQUIPMENT
E3 UNDERFLOOR HEATING
APPENDIX F METHOD FOR MEASURING MAGNETIC FIELDS
APPENDIX G INSTRUMENT FOR MEASURING POTENTIAL DIFFERENCES IN AN INSTALLATION
APPENDIX H EARTHING OF PERMANENTLY WIRED ELECTRICAL EQUIPMENT IN EP AREAS
H1 GENERAL
H2 EQUIPMENT POWERED FROM DOUBLE-INSULATED ELV SUPPLIES
H2.1 General
H2.2 Interconnection of accessible conductive parts
H2.3 Earthing
H3 EQUIPMENT POWERED FROM SINGLE-INSULATED ELV SUPPLIES
H4 EQUIPMENT POWERED FROM PROTECTED LV SUPPLIES
H4.1 General
H4.2 Interconnection of accessible conductive parts
H4.3 Earthing
H5 EQUIPMENT POWERED FROM UNPROTECTED LV SUPPLIES
H5.1 General
H5.2 Interconnection and earthing of accessible conductive parts
APPENDIX I CALCULATIONS FOR EQUIPOTENTIAL EARTHING SYSTEMS
I1 REQUIREMENTS OF THE STANDARD
I2 EXAMPLES OF RESISTANCE CALCULATIONS
I2.1 General
I2.2 Equipotential earthing system
I2.3 Connections to the EP junction
APPENDIX J ADDITIONAL REQUIREMENTS FOR APPLICATION IN NEW ZEALAND
JI SCOPE
J2 DEFINITIONS
J2.1 Exposed conductive part
J2.2 Patient environment
J3 EQUIPMENT USED OUTSIDE OPERATING THEATRES AND DEDICATED BODY-PROTECTED AREAS
J4 GENERAL
J5 PROVISION OF EP SYSTEM
J6 FORM OF EP SYSTEM
J7 TOUCH VOLTAGE
J8 PIPELINE ISOLATORS
J9 CONNECTION OF ITEMS TO THE EQUIPOTENTIAL EARTHING SYSTEM
J9.1 Items to be connected to the equipotential earthing system (other than the EP junction)
J9.2 Items to be connected to the EP junction
J10 CONDUITS
J11 EQUIPMENT EP TERMINALS