GB/T 4988-2016Electric products for ships and offshore units—Ratings of frequency,voltage and current (English PDF)
船舶和近海装置用电工产品 额定频率、额定电压和额定电流
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 29, 2016
Implementation date
March 1, 2017
Scope
GB/T 4988-2016 is the English-translated version of 船舶和近海装置用电工产品 额定频率、额定电压和额定电流.
GB/T 4988-2016 is the Chinese standard "Electric products for ships and offshore units—Ratings of frequency,voltage and current". Its scope clause reads: This standard specifies the rated frequency, rated voltage and rated current of electrical products for ships and offshore installations.
This standard applies to ships and offshore equipment (mobile and fixed) of the electrical products.
The electrical products include reliable fixed and permanent connection Power supply, lighting, electric heating, cooking equipment; automatic control systems and communications, navigation equipment, external general power supply device; electrical instrumentation; Mobile power tools and mobile lighting devices and equipment that operate at safety voltages.
This standard does not apply to the following. a) a dedicated power supply within the equipment and devices and components connected to these power supplies; b) thermal components of the thermal relay and fuses of the fuse (for rated current parameters); c) Excitation equipment for generators; d) special equipment and cables. Its clauses include rated frequency; rated voltage.
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Document preview — GB/T 4988-2016
National Standard of the People's Republic of China
- ICS
- 29.020
- Classification
- K 04
- Replacing
- GB/T 4988-2002
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This standard specifies the rated frequency, rated voltage and rated current of electrical products for ships and offshore installations.
This standard applies to ships and offshore equipment (mobile and fixed) of the electrical products. The electrical products include reliable fixed and permanent connection
Power supply, lighting, electric heating, cooking equipment; automatic control systems and communications, navigation equipment, external general power supply device; electrical instrumentation;
Mobile power tools and mobile lighting devices and equipment that operate at safety voltages.
This standard does not apply to the following.
a) a dedicated power supply within the equipment and devices and components connected to these power supplies;
b) thermal components of the thermal relay and fuses of the fuse (for rated current parameters);
c) Excitation equipment for generators;
d) special equipment and cables.
2 rated frequency
The rated frequency is specified as 50Hz, 60Hz, 400Hz, 1000Hz.
3 rated voltage
3.1
DC rated voltage requirements in Table 1.
Table 1 Units are Volts
Power supply equipment voltage supply equipment voltage
24 24,26,28,36
800a 800a
1000 - a is a single power supply voltage parameter.
3.2
AC rated voltage requirements in Table 2.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Similar standards
Editions of GB/T 4988
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 4988-2016 | Electric products for ships and offshore units—Ratings of frequency,voltage and current | current edition | Current |
| GB/T 4988-2002 | Electric products for ships and offshore units—Ratings of frequency,voltage and current | previous edition | Superseded |
This page sells the current edition, GB/T 4988-2016. Earlier editions are listed for reference only.
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