1 Scope
This standard specifies the technical requirements, inspection methods, inspection rules and markings, packaging, transportation, storage, etc. of generator low excitation impedance protection devices. This standard applies to low excitation impedance protection devices for static or rectifier type generators (hereinafter referred to as devices)
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard.
. At the time of publication of the standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standardsGB/T 1.3-1997
Guidelines for Standardization Work Unit 1: Rules for Drafting and Expressing Standards Part 3: Regulations for Writing Product Standards
GB/T 7261-1987
Basic Test Methods for Relays and Relay Protection Devices
GB/T 7828-1995
Packaging of Relays and Relay Protection Devices Technical conditions for storage and transportation
GB/T 14598.13-1998 Electrical interference tests for measuring relays and protective devices - Part 1: 1MHz pulse group interference test
3 Product classification
3.1 The same type of device is classified according to different characteristics, varieties, types, etc
The following content is specified by the product standard:
a) The division and series of product varieties, types, specifications; b) The representation method and meaning of device model 3.2 Basic parameters
3.2.1 Input excitation rated value
AC voltage (effective value): 10 V, 50 Hz, AC current: 5,1 A 3.2.2 Rated value of auxiliary excitation amount
DC voltage: 220110, 48, 24V (for devices with dedicated DC power supply, it refers to the rated value of the power supply measured at once). 3.2.3 Contact Form
The contact form is specified by the enterprise product standard. 3.2.4 Boundary dimensions, installation dimensions, and terminal diagrams
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1. Telephone communication and confirmation of requirements
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1. The testing industry is fully covered, meeting different testing needs
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4. Free initial testing, with no testing fees charged
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6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China