Cookies
Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
ASTM F1669M-12(2018)
Standard Specification for Insulation Monitors for Shipboard Electrical Systems [Metric]
Přeložit název
NORMA vydána dne 1.4.2018
Informace o normě:
Označení normy: ASTM F1669M-12(2018)
Datum vydání normy: 1.4.2018
Kód zboží: NS-847560
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM F1669M-12(2018) :
This specification covers insulation monitoring devices for stripboard electrical systems. Materials covered by this specification include Type I (ac device) and Type II (dc device) electrical system insulation monitoring devices used in the detection of ohmic insulation faults to ground in either active ac ungrounded electrical systems with dc components (Type I) or dc ungrounded electrical systems (Type II). However, devices used in ac ungrounded systems without dc components are not included. The devices shall undergo conformance and routine tests to ensure that the device meets the requirements specified. Conformance tests shall included testing of response time, peak voltage, input impedance or resistance, built-in meters, and impulse voltage withstand capabilities, whereas routine tests shall include testing of response value, self-test function, built-in meters, and voltage.
Keywords:
AC electrical systems, DC components, DC electrical systems, electrical insulation monitoring, electrical systems, ohmic insulation faults,, ICS Number Code 47.020.60 (Electrical equipment for ships or marine structures)
Doplňující informace
| 1. Scope | ||||||
|
1.1 This specification covers two (2) types of electrical system insulation monitoring devices. 1.1.1 Type I is an AC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to ground in active AC ungrounded electrical systems up to 1000 VAC, having DC components up to 1500 VDC. 1.1.2 Type II is a DC device intended as a permanently installed unit for use in the detection of ohmic insulation faults to ground in DC ungrounded electrical systems up to 1500 VDC. 1.2 Limitations—This specification does not cover devices that are intended for operation in AC ungrounded systems without DC components. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are included for information only and are not considered standard. 1.4 The following precautionary caveat pertains only to the test methods portion, Section 7 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||
| 2. Referenced Documents | ||||||
|
Doporučujeme:
