AS/NZS 3947.4.3:2000
Low-voltage switchgear and controlgear - Contactors and motor-starters - A.C. semiconductor controllers and contactors for non-motor loads
Applies to a.c. semiconductor non-motor load controllers and contactors intended for performing electrical operations by changing the state of a.c. electric circuits between the ON-state and the OFF-state. They may include a series mechanical switching device and are intended to be connected to circuits, the rated voltage of which does not exceed 1000 V a.c. This Standard is identical with and reproduced from IEC 60947-4-3:1999.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$186.30 NZD
|
|
| HardCopy |
$207.00 NZD
|
|
| Networkable PDF |
Price varies
|
|
| Online Library ( Annual subscription) |
Info
Price varies
Online Library subscription information Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team. |
AS/NZS 3947.4.3:2000 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTACTORS AND MOTOR-STARTERS-A.C. SEMICONDUCTOR CONTROLLERS....
PREFACE
CONTENTS
INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions
3.1 Definitions concerning a.c. semiconductor (non-motor-load) control devices
3.1.1 AC semiconductor controllers and contactors (solid-state contactors)
3.1.2 Hybrid controllers and contactors (see figure 1)
3.1.3 current-limit function
3.1.4 load control
3.1.5 ramp-up
3.1.6 ramp-down
3.1.7 controlled operation
3.1.8 Vacant
3.1.9 ON-state
3.1.10 FULL-ON (state of controllers)
3.1.11 minimum load current
3.1.12 OFF-state
3.1.13 OFF-state leakage current (IL)
3.1.14 operation (of a controller)
3.1.15 operating cycle (of a controller)
3.1.16 operating capability
3.1.17 overload current profile
3.1.18 rating index
3.1.19 tripping operation (of a controller)
3.1.20 trip-free controller
3.1.21 overcurrent protective means OCPM
3.1.22 ON-time
3.1.23 OFF-time
3.2 EMC definitions
3.2.1 electromagnetic compatibility, EMC (abbreviation)
3.2.2 (electromagnetic) emission
3.2.3 electromagnetic disturbance
3.2.4 radio(frequency) disturbance
3.2.5 radiofrequency interference; RFI (abbreviation)
3.2.6 transient (adjective and noun)
3.2.7 burst (of pulses or oscillations)
3.2.8 voltage surge
3.2.9 immunity (to a disturbance)
4 Classification
5 Characteristics of a.c. semiconductor controllers and contactors
5.1 Summary of characteristics
5.2 Type of equipment
5.2.1 Form of equipment
5.2.2 Number of poles
5.2.3 Kind of current
5.2.4 Interrupting medium (air, vacuum, etc.)
5.2.5 Operating conditions of the equipment
5.3 Rated and limiting values for main circuits
5.3.1 Rated voltages
5.3.2 Currents
5.3.3 Rated frequency
5.3.4 Rated duty
5.3.5 Normal load and overload characteristics
5.3.6 Rated conditional short-circuit current
5.4 Utilization category
5.4.1 Assignment of ratings based on the results of tests
5.5 Control circuits
5.6 Auxiliary circuits
5.7 Vacant
5.8 Coordination with short-circuit protective devices (SCPD)
5.9 Switching overvoltages
6 Product information
6.1 Nature of information
6.2 Marking
6.3 Instructions for installation, operation and maintenance
7 Normal service, mounting and transport conditions
7.1 Normal service conditions
7.1.1 Ambient air temperature
7.1.2 Altitude
7.1.3 Atmospheric conditions
7.1.4 Shock and vibrations
7.2 Conditions during transport and storage
7.3 Mounting
7.4 Electrical system disturbances and influences
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 Materials
8.1.2 Current-carrying parts and connections
8.1.3 Clearances and creepage distances
8.1.4 Vacant
8.1.5 Vacant
8.1.6 Vacant
8.1.7 Terminals
8.1.8 Vacant
8.1.9 Provisions for earthing
8.1.10 Enclosures for equipment
8.1.11 Degrees of protection of enclosed controllers and contactors
8.2 Performance requirements
8.2.1 Operating conditions
8.2.2 Temperature rise
8.2.3 Dielectric properties
8.2.4 Normal load and overload performance requirements
8.2.5 Coordination with short-circuit protective devices
8.2.6 Switching overvoltages
8.3 EMC requirements
8.3.1 General
8.3.2 Emission
8.3.3 Immunity
9 Tests
9.1 Kinds of tests
9.1.1 General
9.1.2 Type tests
9.1.3 Routine tests
9.1.4 Sampling tests
9.1.5 Special tests
9.2 Compliance with constructional requirements
9.3 Compliance with performance requirements
9.3.1 Test sequences
9.3.2 General test conditions
9.3.3 Performance under no load, normal load and overload conditions
9.3.4 Performance under short-circuit conditions
9.3.5 EMC tests
9.3.6 Routine and sampling tests
9.4 Special tests
9.4.1 Vacant
ANNEX A - Marking and identification of terminals
A.1 General
A.2 Marking and identification of terminals of controller and contactors
ANNEX B - Typical service conditions for controllers and contactors
B.1 Control of resistive heating elements
B.2 Switching of electric discharge lamp controls
B.3 Switching of incandescent lamps
B.4 Switching of transformers
B.5 Switching of capacitor banks
ANNEX C - Vacant
ANNEX D - Requirements for radiated emission testing
D.1 Characteristics of controllers and contactors
D.2 Radiated emissions
ANNEX E - Method of converting CISPR 11 radiated emission limits to transmitted power equivalents
ANNEX F - Operating capability
ANNEX G - Examples of control-circuit configurations
G.1 External control device (ECD)
G.2 Control-circuit configurations
ANNEX H - Items subject to agreement between manufacturer and user
Keep me up-to-date
Sign up to receive updates when there are changes to this standard
References
Limits and methods of measurement of radio disturbance characteristics of electrical motor-operated and thermal appliances for household and similar purposes, electric tools and similar electric apparatus
Low-voltage switchgear and controlgear - General rules
Related Information
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 4, Clause 5
Citation context:Listed as a Standard applicable to contactors and motor-starters - AC semiconductor controllers and contactors for non-motor loads
Similar Standards
-
AS/NZS 60947.1:2021
Low-voltage switchgear and controlgear, Part 1: General rules
-
AS/NZS 61439.1:2016
Low-voltage switchgear and controlgear assemblies - Part 1: General rules
-
AS/NZS 61439.2:2016
Low-voltage switchgear and controlgear assemblies - Part 2: Power switchgear and controlgear assemblies -
AS/NZS 61439.3:2016
Low-voltage switchgear and controlgear assemblies - Part 3: Distribution boards intended to be operated by ordinary persons (DBO)
AS/NZS 3947.4.3:2000 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - CONTACTORS AND MOTOR-STARTERS-A.C. SEMICONDUCTOR CONTROLLERS....
PREFACE
CONTENTS
INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions
3.1 Definitions concerning a.c. semiconductor (non-motor-load) control devices
3.1.1 AC semiconductor controllers and contactors (solid-state contactors)
3.1.2 Hybrid controllers and contactors (see figure 1)
3.1.3 current-limit function
3.1.4 load control
3.1.5 ramp-up
3.1.6 ramp-down
3.1.7 controlled operation
3.1.8 Vacant
3.1.9 ON-state
3.1.10 FULL-ON (state of controllers)
3.1.11 minimum load current
3.1.12 OFF-state
3.1.13 OFF-state leakage current (IL)
3.1.14 operation (of a controller)
3.1.15 operating cycle (of a controller)
3.1.16 operating capability
3.1.17 overload current profile
3.1.18 rating index
3.1.19 tripping operation (of a controller)
3.1.20 trip-free controller
3.1.21 overcurrent protective means OCPM
3.1.22 ON-time
3.1.23 OFF-time
3.2 EMC definitions
3.2.1 electromagnetic compatibility, EMC (abbreviation)
3.2.2 (electromagnetic) emission
3.2.3 electromagnetic disturbance
3.2.4 radio(frequency) disturbance
3.2.5 radiofrequency interference; RFI (abbreviation)
3.2.6 transient (adjective and noun)
3.2.7 burst (of pulses or oscillations)
3.2.8 voltage surge
3.2.9 immunity (to a disturbance)
4 Classification
5 Characteristics of a.c. semiconductor controllers and contactors
5.1 Summary of characteristics
5.2 Type of equipment
5.2.1 Form of equipment
5.2.2 Number of poles
5.2.3 Kind of current
5.2.4 Interrupting medium (air, vacuum, etc.)
5.2.5 Operating conditions of the equipment
5.3 Rated and limiting values for main circuits
5.3.1 Rated voltages
5.3.2 Currents
5.3.3 Rated frequency
5.3.4 Rated duty
5.3.5 Normal load and overload characteristics
5.3.6 Rated conditional short-circuit current
5.4 Utilization category
5.4.1 Assignment of ratings based on the results of tests
5.5 Control circuits
5.6 Auxiliary circuits
5.7 Vacant
5.8 Coordination with short-circuit protective devices (SCPD)
5.9 Switching overvoltages
6 Product information
6.1 Nature of information
6.2 Marking
6.3 Instructions for installation, operation and maintenance
7 Normal service, mounting and transport conditions
7.1 Normal service conditions
7.1.1 Ambient air temperature
7.1.2 Altitude
7.1.3 Atmospheric conditions
7.1.4 Shock and vibrations
7.2 Conditions during transport and storage
7.3 Mounting
7.4 Electrical system disturbances and influences
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1 Materials
8.1.2 Current-carrying parts and connections
8.1.3 Clearances and creepage distances
8.1.4 Vacant
8.1.5 Vacant
8.1.6 Vacant
8.1.7 Terminals
8.1.8 Vacant
8.1.9 Provisions for earthing
8.1.10 Enclosures for equipment
8.1.11 Degrees of protection of enclosed controllers and contactors
8.2 Performance requirements
8.2.1 Operating conditions
8.2.2 Temperature rise
8.2.3 Dielectric properties
8.2.4 Normal load and overload performance requirements
8.2.5 Coordination with short-circuit protective devices
8.2.6 Switching overvoltages
8.3 EMC requirements
8.3.1 General
8.3.2 Emission
8.3.3 Immunity
9 Tests
9.1 Kinds of tests
9.1.1 General
9.1.2 Type tests
9.1.3 Routine tests
9.1.4 Sampling tests
9.1.5 Special tests
9.2 Compliance with constructional requirements
9.3 Compliance with performance requirements
9.3.1 Test sequences
9.3.2 General test conditions
9.3.3 Performance under no load, normal load and overload conditions
9.3.4 Performance under short-circuit conditions
9.3.5 EMC tests
9.3.6 Routine and sampling tests
9.4 Special tests
9.4.1 Vacant
ANNEX A - Marking and identification of terminals
A.1 General
A.2 Marking and identification of terminals of controller and contactors
ANNEX B - Typical service conditions for controllers and contactors
B.1 Control of resistive heating elements
B.2 Switching of electric discharge lamp controls
B.3 Switching of incandescent lamps
B.4 Switching of transformers
B.5 Switching of capacitor banks
ANNEX C - Vacant
ANNEX D - Requirements for radiated emission testing
D.1 Characteristics of controllers and contactors
D.2 Radiated emissions
ANNEX E - Method of converting CISPR 11 radiated emission limits to transmitted power equivalents
ANNEX F - Operating capability
ANNEX G - Examples of control-circuit configurations
G.1 External control device (ECD)
G.2 Control-circuit configurations
ANNEX H - Items subject to agreement between manufacturer and user
AS/NZS 3947.4.3:2000
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.