GB 156-1993 Standard voltage GB156-1993 standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
standard
standard
electricity
Standard voltages
voltage
This standard adopts the international standard IEC38 (1983 )"Standard Voltage". 1 Subject content and scope of application
1.1 Subject content
GB156-93
Replaces GB156-80
This standard specifies the nominal voltage value, electrical The rated voltage value of the equipment and the maximum voltage value of the electrical equipment. The DC voltage in this standard is the average value, and the AC voltage is the root mean square value. 1.2. Scope of application
1.2.1 This standard is applicable to DC and AC power generation, transmission, distribution and power consumption systems and electrical equipment with a standard frequency of 50Hz. These electrical equipment include electrical equipment, electronic equipment, telecommunications equipment and electrical appliances. 1.2.2 This standard does not apply to (but is not limited to) the following situations: voltage of components and parts inside electrical equipment; a.
voltage representing signals, transmission signals or measured values; b.|| tt||c.
Voltage of special test equipment.
2 cited standards
GB999 DC electric traction voltage series
GB1402 railway main line electric traction AC voltage standard 3 terms
3.1 system system
of this standard "System\" refers to the combination of wires (lines) and equipment connected to work at a common nominal voltage. 3.2 Nominal voltage nominalvoltage
The voltage specified by the system.
3.3 Rated electrical equipment Voltage ratedvoltageforequipment is the voltage usually determined by the manufacturer according to the specified working conditions of electrical equipment. 3.4 The highest voltage of the system is the highest voltage that occurs at any time and at any point in the system when the system is operating normally, excluding the temporary period of the system. State and abnormal voltage, such as temporary and instantaneous voltage changes caused by system operation. 3.5 The highest voltage of the equipment is determined by taking into account the insulation performance of the equipment and other properties related to the maximum voltage (such as the magnetizing current of the transformer and the loss of the capacitor). The determined maximum operating voltage. Its value is equal to the maximum voltage of the system. Note: ① The maximum voltage of the electrical equipment is only marked when the nominal voltage of the system is higher than 1000 (1140) V. In fact, due to the Due to the sensitive characteristics of certain electrical equipment to voltage (such as the loss of capacitors, magnetizing current of transformers, etc.), when the system operating voltage reaches the highest voltage of the electrical equipment, the State Administration of Technical Supervision approved it on 1993-04-20 and implemented it on 1993-12-01 | |tt||GB156—93
When the normal operation of the equipment cannot be guaranteed, the relevant standards of the equipment should stipulate the voltage limit value that can ensure the normal operation of the equipment. )V electrical equipment used in the power system, its operation and insulation voltage shall be specified according to the system nominal voltage
4 standard voltage classification
4.1220V to 1000 (1140) V AC. The nominal voltage value or rated voltage value of the power system and electrical equipment is shown in Table 1. Table 1
The nominal voltage value of the three-phase four-wire system or the three-phase three-wire AC system and the rated voltage value of the electrical equipment 220/380 || tt | Voltage, the line voltage under the slash is the line voltage of the three-wire system. The nominal voltage value of the AC three-phase system of 3kV and above and the maximum voltage value of the electrical equipment are shown in Table 2. 4.2
Table 2www.bzxz.net
Nominal voltage of the system
3
6
10
(20)
35
66
110
220
330
500
(750)
Note: ①The values ??in brackets are used when required by the user (2) The rated voltage of electrical equipment can be selected from Table 2 and determined by product standards. 4.3
The highest voltage of electrical equipment
3.6
7.2
12|| tt||(24)
40.5
72.5
126(123)
252(245)
363
550|| tt||(800)
1 200
The rated voltage values ??of electrical equipment with AC 380V and below and DC 2000V and below are shown in Table 3. kv
GB156—93
V
Table 3
AC rated voltage
DC rated voltage
Supplementary value
Priority value
Supplementary value
Priority value
1.2
—
1.5
2
2.4||tt| |3
4. 5
5
5
6
6
9
12||tt| |12
15
15
24
24
30
36
38
42
48
48
60
60
72
100
110
110|| tt||127
Priority value
160
220
440
800
1 000
1500|| tt||2 000
DC rated voltage
4.4 The rated voltage value of the generator is shown in Table 4. Supplementary value
400
630
1 250
Alternator rated voltage
115
230
400| |tt||690
3150
6300
10 500
13800
GB156-93
Continued Table 3||tt| |Table 4
Priority value
220
380
AC rated voltage
DC generator rated voltage
115||tt| |230
460
Supplementary value
V
V
Alternator rated voltage
15750
18 000
20 000
22 000
24.000
26 000
GB156-93
Continued Table 4
DC power generation Machine rated voltage
Note: The rated voltage of the electrical equipment matched with the generator outlet terminal can be the rated voltage of the generator, which is specified in the product standard. 4.5 For the voltage of DC traction system and its electrical equipment, see GB999. For the voltage of AC mains electric traction system and its electrical equipment, see GB1402.
Additional notes:
This standard is proposed and coordinated by the National Voltage, Current Level and Frequency Standardization Technical Committee. The units responsible for drafting this standard are the Mechanical Standardization Institute of the Ministry of Mechanical and Electronic Industry and the Electric Power Research Institute of the Ministry of Energy. The main drafting units of this standard participated in the drafting of this standard: Shanghai Electrical Apparatus Research Institute of the Ministry of Mechanical and Electronics, Water Conservancy and Electric Power Information Research Institute, First Equipment Department of the Ministry of Mechanical and Electronics, China Electricity Council of the Ministry of Energy, Xi'an High Voltage Electrical Research Institute of the Ministry of Mechanical and Electronics, and Wuhan High Voltage Research Institute of the Ministry of Energy. graduate School. The main drafters of this standard are Yu Xinmin, Yang Enhui, Cai Jingchun, Jia Yan, Lin Shaokui, Yao Fucheng, Zhai Zufang, Li Zhaoyang, and Zhu Jialiu.
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