Telecontrol equipment and systems — Part 2: Operating conditions — Section 1: Power supply and electromagnetic compatibility
1 Scope
This document specifies the requirements for the power supply and electromagnetic compatibility and test report of telecontrol equipment and system under working conditions, and describes the corresponding test methods.
This document is applicable to the design, production, manufacturing and other processes of telecontrol equipment and systems, and is used as a reference for protection measurement and control equipment, distribution automation terminal equipment, and distribution carrier systems supporting distribution automation systems.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 9254.1 Information technology equipment, multimedia equipment and receivers - Electromagnetic compatibility - Part 1: Emission requirements
GB 17625.1-2022 Electromagnetic compatibility - Limits - Part 1: Limits for harmonic current emissions (equipment input current ≤16 A per phase)
GB/T 17625.2-2007 Electromagnetic compatibility (EMC) - Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16A per phase and not subject to conditional connection
GB/T 17626.2 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3 Electromagnetic compatibility - Testing and measurement techniques - Part 3: Radiated, radio-frequency, electromagnetic field immunity test
GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burst immunity test
GB/T17626.5 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test
GB/T17626.6 Electromagnetic compatibility - Testing and measurement techniques - Immunity to conducted disturbances induced by radio-frequency fields
GB/T 17626.8 Electromagnetic compatibility(EMC) - Part 4-8: Testing and measurement techniques - Power frequency magnetic field immunity test
GB/T 17626.9 Electromagnetic compatibility - Testing and measurement techniques - Pulse magnetic field immunity test
GB/T 17626.10 Electromagnetic compatibility - Testing and measurement techniques - Damped oscillatory magnetic field immunity test
GB/T 17626.11 Electromagnetic compatibility - Testing and measurement techniques - Part 11: Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current up to 16 A per phase
GB/T 17626.12 Electromagnetic compatibility - Testing and measurement techniques - Part 12: Ring wave immunity test
GB/T 17626.13-2006 Electromagnetic compatibility (EMC) - Testing and measurement techniques - Harmonics and interharmonics including mains signalling at a.c. power port low frequency immunity test
GB/T 17626.14 Electromagetic Compatibility - Testing and measurement techniques - Voltage fluctuation immunity test
GB/T 17626.18 Electromagnetic compatibility - Testing and measurement techniques - Damped oscillatory wave immunity test
GB/T 17626.29 Electromagnetic compatibility (EMC) - Testing and measurement techniques - Voltage dips short interruptions and voltage variations on d.c. input power port immunity tests
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4365 and the following apply.
3.1
telecontrol equipment
equipment for monitoring and controlling a geographically dispersed production process
3.2
telecontrol system
system for monitoring and controlling a geographically dispersed production process, which is used to realize the monitoring and controlling operation of the controlled equipment from a remote control center
Note: It consists of three parts: control end, executive end and communication channel.
3.3
harmonic content
percentage of the ratio of the RMS value of each harmonic voltage to the power frequency voltage
3.4
ripple voltage
percentage of the peak-to-peak ratio of the AC component of the DC supply voltage to the measured supply voltage (mean) at the rated load
3.5
equipment under test (EUT)
equipment (devices, appliances and systems) subject to electromagnetic compatibility (EMC) compliance tests
Note: EUT in this document refers to telecontrol equipment and telecontrol systems.
[Source: GB/T 6113.201-2018, 3.1.18, modified]
4 Power supply
4.1 General
The electrical energy required for the operation of telecontrol equipment and the systems is provided in the following ways:
a) directly connected to the power supply;
b) connected to a power supply device placed between the power supply and the system (or part thereof);
c) to maintain the operation of the system (or part thereof) by an auxiliary or backup power supply in case of maintenance or failure of the main power supply.
4.2 AC power supply
4.2.1 Nominal AC voltage
This document only considers AC power supply that has the same characteristics as public grid power (e.g. 50Hz) and does not include other higher frequencies (e.g. 40Hz).
The most commonly used nominal AC voltage (RMS) as specified in Table 1
Contents Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Power supply 4.1 General 4.2 AC power supply 4.3 DC power supply 5 Electromagnetic compatibility 5.1 Emission 5.2 Immunity 5.3 Test configurations and procedures 5.4 Acceptance criteria 6 Test report Bibliography
