This standard specifies the rated frequency, rated voltage and rated current of electrical products for ships and offshore installations. This standard applies to electrical products for ships and mobile and fixed offshore installations. Its electrical products include reliably fixed and permanently connected power, lighting, electric heating, and drinking utensils equipment; external universal power supply devices for automatic control systems and communication and navigation equipment; electrical instruments; mobile power tools and mobile lighting devices and equipment working under safe voltage, etc. GB/T 4988-2002 Rated frequency, rated voltage and rated current of electrical products for ships and offshore installations GB/T4988-2002 Standard download decompression password: www.bzxz.net

3Cs. 29. 020 National Standard of the People's Republic of China GB/T4988-2002 Ratings of frequency, voltage and current of electric products for ships and offshore unis2002-10-08 Issued by
Shandong People's Republic of China
National Quality Supervision, Inspection and Quarantine Commission
2003-04-01 Implementation
GE/T49BB2002
The standard is limited to G316:194 Marine power converter M basic requirements 1E60092 Electrical equipment 3 in the relevant part 1EC61892-3 1993 edition> Electrical equipment for mobile and fixed offshore installations GB/T29261 385 standard rated voltage 3GB762-1395 standard current 3EC60059:139B156-1993 standard voltage (EC50381983) 5/1980-199 standard frequency cIEC15) China Super Equipment Society marine grade and Di manufacturing current constant (1) and relevant current standards, GT/4988-1985 ship and oil platform knife electrical products can determine the power, rated voltage and rated current.
Compared with the original standard, the rated current of the regional standard has been expanded, the brackets for the 50H power level have been set, A has been removed, the name of the standard has been adjusted, and "海Ｆ.石山平台" has been changed to "聽海裝曾" to meet the needs of offshore operations and coordinate with the name of TC1R.
The rated current values ​​specified in this standard are somewhat different from those in IF60992-201, including Article 5.3 of IEC600-201 (14 years) which stipulates that "in selecting the power and power of the return system, appropriate consideration should be given to the voltage and power of the shore power supply that may be connected to the system, and the actual situation of existing domestic electrical products and power grids should be considered. When revised, the regional standard GB15619 will still be used as the basis. After the revision of national standard GT116, this standard will replace GBT when it is revised next time.
This standard is issued by China Electrical Equipment Industry Association, and is sponsored by the China Electrical Equipment Research Institute. The main drafters are: Ma I Can, Zhang Dinghao, Shu Ben. This standard was first issued in July 185.
1 Scope
National Standard of the People's Republic of China
Rated current
Rated frequency and rated voltage of electrical products for ships and offshore units GH/T:4988—7002
Generated CB/1 1283—.98.
This standard specifies the rated power, rated voltage and rated current of electrical products for offshore installations. This standard applies to electrical products used in ships and mobile and fixed offshore installations: electrical products for fixed and long-term use, lighting, electric heating, automatic control systems, communications, navigation equipment and other external power supplies. The following table applies to electrical instruments; mobile lighting equipment working under safe electrical conditions, etc. This standard does not apply to the following products:
Equipment with a dedicated power supply connected to this power supply; devices and parts connected to this power supply (for rated charging parameters): c) dynamic magnetic equipment of heat relays and heating devices of generators:
d) special equipment and power supply, etc.:
Rated power
The rated power is specified in Table 1. ||tt ||Balanced voltage
Self-operated rated current standard see section 2.
Receiving equipment voltagewww.bzxz.net
1) For the voltage band of a single power supply,
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China 2902-10·Approved power supply equipment voltage
24, 26.2J5
2003-0 yuan-01 implementation
Required rated current and actual output voltage are shown in Table 3
Receiving equipment voltage/V
! ) Applicable to products for offshore installations
Rated current
CB/T498B.-.-2002
Power supply equipment voltage/V
395,443
10 500
For the rated filter of electrical products charged by current, please see Table 4. Table 4
Guic:
10 cx:
The required filter rate can be deduced/H
50,60,460,: X
56,456,1 000
66.496,1 000
50.60.460.1c00
so.co.dou.. c3c
su.Gu.tou.1 coc
4.214For rated current levels below 11, select the lowest efficiency by rounding off the value R:6×10*) Note: : Only the first number is 3,
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