This standard specifies the requirements, test methods, inspection rules and markings, operating instructions, packaging, transportation and storage of marine AC low-voltage switchboards. This standard applies to the design, production and acceptance of marine three-phase AC 50Hz or 60Hz, 1000V or less main switchboards, emergency switchboards, area switchboards and distribution switchboards (hereinafter referred to as switchboards). GB/T 11634-2000 General Technical Requirements for Marine AC Low-voltage Switchboards GB/T11634-2000 Standard Download Decompression Password: www.bzxz.net

.47.20 .
National Standard of the People's Republic of China
GB/T11634—2000
Marine A,C low yoltage switchboard general specification2000-06 -07 Released
2000-12-01 Implementation
Released by the Quality and Technical Supervision Bureau
GBT11534—2000
This standard is a revision of GB/T11634—18% AC low-voltage distribution system for general use. The revision included the following modifications based on the technical development of distribution boards in recent years: 1. Ambient air temperature change: 2. Technical requirements for the construction of sea-going vessels 3. Standard 4. Heat treatment of air outlet equipment and automatic electronic equipment were made separately; 3. According to the provisions of GBT423.13 Basic training and test procedures for electrical products: The bounce test was accepted as a bounce test; 4. The grounding of the distribution network added the requirement of "a separate fixed grounding conductor with a cross-section area"! 4) Added the "use of the book" content || tt || This standard is based on the actual performance of the standard, and is based on GB11634: 1589. The standard is issued by China National Marine Equipment Corporation. This standard is under the jurisdiction of the Electrical Sub-Technical Committee of the National Marine Equipment Standardization Committee. The Shanghai Navigation Instrument General Factory was responsible for drafting this standard, and the main drafters of the standard were Tang Jinbin, Li Jiufang, Zhou Tianbao, and Xiao Yu. This standard was first issued in September 1989.
1
National Standard of the People's Republic of China
General Technical Specification of Marine AC Low Voltage SwitchboardsB/11634—2000
GB/T182
Standard specifies the requirements, test methods, inspection rules and markings, instructions, packaging, shipping boxes and packaging for marine AC low voltage switchboards.
Standard applies to the design, production and acceptance of main switchboards, emergency switchboards, zone switchboards and distribution boards (hereinafter referred to as simplified switchboards) with AC 0Tz or f0TIa.1C0V or below. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being cited in this standard. When this standard is published, the versions shown are valid at the same time: all new standards will be revised. All parties using this standard should consider using the latest version of the following standards. GB19119S0 Package storage pictorial symbol Www.bzxZ.net
GB223.1-185 Basic environmental test procedures for electrical and electronic products Test A: Low temperature test method (rtYFC.6006B-2-1:1974)
GR/T32.2-1SEST, basic environmental test procedures for products Test B: High temperature test method (rtYFC.6006B-2-1:1974)
(B2.4-1S53 Basic environmental test procedures for electrical and electronic products Test Db: Cyclic damp heat test method (rr:1HC 6m168-2-50:980)
/T:3.10-1SF center T factory environmental test part 2 test method test Fc and guidance: report (I dt1E 60062-2-6:1952
GH2423.16--1999 Magong electronic product damage testing part 2, test method test J benefit guidance: long each (EC: 6068210,1988)
GH/T2423.17-13 Basic environmental test procedures for electronic products Test K, Salt drop test method (EC1EC6153-2-22:1981)
GB 2423.31-1986 Basic environmental test procedures for electric and electronic products Test method for tilt and spread test (EC1EC6153-2-22:1981)
GB 2423.31-1986 Basic environmental test procedures for electric and electronic products Test method for tilt and spread test (EC1EC6153-2-22:1981)
GB 2423.30-18 Basic environmental test procedures for electric and electronic products Test method for flame retardant test GH4208-1993 Shell grade P code E0E00529:1989) GR/61881SS6 Transport packaging delivery and receipt mark GB9969.1-1998 General provisions for product use instructions G3/T 14HUR—155. Standard shore
JT gate (1S! Ship AC power system circuit calculation 3 fixed branch
standard adopts the following definition
State Quality and Technical Supervision Bureau 2000-06-07 approved 2000-12-01 implementation
3 board snwitahaad
GB/T 116342000
The main power supply directly supplies power and distributes the power to various facilities. 32 distribution board emergencyawitchboard In the event of a power failure in the main power supply system, the emergency source or temporary source will be connected to the power supply, and the central distribution system will be connected to the power distribution situation,
3.3K distribution board
sectiobaard
Used to distribute power to other areas, distribution board or total branch power supply A combination of control and protection equipment. 3.4 Distribution panel rliimtiubuard
A combination of devices used to distribute A or more overcurrent protection and equipment to the rear branch circuit. 3.5 Rear branch circuit tinalsmbcircui1
Located behind the distribution board: -Level overcurrent protection equipment. Dangerous surface of the electric wax: 4 Requirements
4.1 Environmental requirements
4.1.1 The power distribution equipment should be able to work under the following environmental conditions: 1. 4. 1.1. 1 Air temperature
) Generally, the power distribution core (electrical equipment installed in the place is ++5, and the installation is also scattered on the board is ~+5b) Automatic electronic equipment (with optical components) is shown in Table 1. Table 1 Ambient temperature of automation electronic equipment
Installation places and enclosed places with air conditioners
Enclosed places without air conditioners
Semi-finished rooms with opening and closing panels
4.1.1.2 Relative humidity
Not higher than 4% ± 5%:
6 When the temperature is higher than 5℃, it shall be 4% ± 3%
c) After 55,2 hours of alternating heat test, the insulation resistance shall be less than 1M11. 4.1.1.3 Low tilt, swing
) Tilt 1GF
b) Shake 22.3\ for 10s1
c) Emergency power distribution tilt 22.5° for 22.5° for 10s. 4.1-1-4
a) Frequency 2.0~8.2H, moving width m;
) Car 13.2--1001z, speed 7m/. 4.1.1.5 Point device, use
+3~-1 55
1$-120
25---72
:) Metal parts, components and insulation parts of distribution board: after 43 salt test, no residual corrosion products should be generated on the surface of the sample; h) After 281 long plug test, the growth level of bacteria on the surface of the sample shall not exceed the general requirements specified in B/T3423.1E for the insulation parts of the distribution board.
4.1.1.6 Bounce circuit
The board can withstand the bounce test. After the test, the board can be self-powered. The electrical structure of the machine should show the external 4.1.2, the electrical and frequency fluctuation
The board can work properly under the fluctuation conditions specified in Table 2. The frequency is not too high or too high. The battery is connected during charging
No toxicity during charging
GB/T:11634-2000
2 Voltage and noise fluctuation
2E ---3n
-25~-2n
4.2.1 The distribution wire type is generally vertical, self-supporting, fixed, and small distribution can also be wall-mounted. The distribution box shell should be made of high-quality cold-rolled thin electrode with a thickness of not less than .2mm. The necessary measuring instruments should be installed in the position of the structure, base, cabinet and panel should be flat and have sufficient strength, and should not be made of materials that can withstand mechanical, electrical and thermal stress. The movable door should be equipped with a stopper, and the edges and openings of the old pavilion parts should be free of thorns and no shaped mountains. All welding places are in accordance with the car, without obvious deformation and welding defects. 4.2.3 The parts used on the distribution board shall be made of corrosion-resistant materials or pins treated with anti-corrosion treatment. The fasteners used as conductive parts shall be made of solvent-resistant materials. 2.4 The protection level of the top of the distribution board shall meet the requirements of 11-22. However, if the switchboard is installed in a control room, there is no water barrier above the distribution board.When the oil and gas joints, oil phase and other devices penetrate, the expansion section is 11°21. Both sides of the distribution board must have protection facilities of not less than TP2X protection level: When the voltage of the distribution board is greater than 100V, the back must also have protection facilities of not less than TP2X protection level. 4.2.5 The front and rear of the distribution board should be equipped with fixed safety guards. The rear of the distribution board is directly opened, and the final quick release must be installed unevenly.
4.2-6 The cable usually enters the distribution board from the bottom. If there is a special need, it can also enter from the top. 4.7.7 The ground voltage is 50V. The exposed part should be installed on the board: 4.2. The inner and outer surfaces of the distribution board are generally sprayed with non-reflective polyester of the same color. The color can be selected by the user. The color should be solid, the color should be uniform, and the surface should be smooth.
4.2.9 The metal components on the distribution board, in addition to their own good corrosion resistance, are all virtually indestructible. 4.2.10 The components installed on the distribution board should have sufficient tolerance: the bottom of the distribution board should be equipped with a base with sufficient clearance.
4.3 Selection and installation of components
4.3.1 The parameters of the electrical components and their installation on the distribution board, such as rated current, short-term reliability, energy efficiency, and service life, should be suitable for the specified range.
4.3.2 The electrical components used in the distribution board should be firmly installed on the frame or panel, and the protective measures should be taken to ensure that the insulation resistance and insulation resistance of the components are not too strong. The maximum compensable distance between the components and the insulation resistance should at least meet the relevant requirements of the components.
4.3.3 The wiring terminals with a voltage greater than 5UUV should be clearly separated from the wiring terminals with lower voltages, and marked with limit marks. 4.3.4 Short-circuit fuses should be installed separately as much as possible. When the required rated voltage of the new fuse is higher than 5V, and the rated voltage of the fuse is lower than the rated voltage of the fuse, a special notice sign should be installed. For example: "Caution, only use 5V fuse!", etc. 4.4 Busbars 4.4.1 The light current and incoming conductors of the distribution board should be made of braided products, and the electrical connection surface should be flat and smooth. Anti-corrosion treatment should be carried out. 4.2.2 The non-permitted connections of the busbar should have an acceptable protection device. The permissible temperature rise is shown in Table 3. The two types of busbars should be marked with copper shielding plates. GB/T 11634 2000
Table 3 Busbar carrying allowable temperature and humidity rise time
4.4.3 The bare busbars of each phase, the rated busbar and the earthing part are subject to small electrical circuits and electrical feet (excluding the conductor of the busbar and the power supply) see Table 4. Minimum electrical room and creepage ionization
Phase-to-phase or phase-to-phase or rated electrical room
>230--660
4.4.4 The color, phase sequence and relative position of the busbars installed are not shown in Table 5. The phase sequence, color and relative position of the busbars installed in the A(R) cabinet are the same as the total side of the busbar. The neutral line of the busbar shall be checked when it is in the right position.
Bus installation quantity
Horizontal layout
The current of bus and connecting conductors is shown in Figure 1 and Table 5. No. 1 generator.
Invite the electrician to leave
Baohua you! AE-generator plan: E-feedback can be arranged in K..Note the method, F.HN-running conductor (2MV2 connecting conductor (3:Q-compliance number [4) Figure 1 Busbar and connection position Generator voltage GB/T11634-2000 Table 6 Busbar and connecting conductor current carrying mother generator power system Two or more generators in parallel Power research Violation according to conductor 1 Real power circuit Read the circuit only on occasions or to the foreign full use of the field station without the standard connecting conductor (2) and (3) Violation of the connecting conductor (4) 4.4. 6. Standard circuit strength
Large industrial generator rated current
The following is a long state
item
a) Large installed large abandoned capacity of a core analysis of the rated current plus its relatives and generators (excluding standby) rated current of the sum of 8 points: ,) Large under load due to the failure of the generator to maintain the rated current (except standby) the total rated current of the generator
large ling mutual reduction (including standby rated current of 7G, the cost must exceed the generator current
greater than the safety current
and the actual 4.4.6.1 The busbar, connecting conductors and their supports shall be able to withstand the electric force and thermal stress generated during a short circuit without being damaged. 4.4.6.2 For unreturnable ship power systems, the short-circuit tolerance requirements can be determined by calculation. The rough-circuit current meter used to verify the short-circuit strength requirements is specified in Table 101: In the absence of precise data, the rated current at the busbar can be estimated by the following method. The short-circuit current signal should be as large as possible. The rated current of all generators that may be connected in parallel when the short-circuit strength is required. 10 times the rated current plus 3 times the rated current of all motors that need to be run at the same time (effective value). The power factor of the short-circuit circuit is guaranteed to be 0:5. 4.4. When the total capacity of the generator exceeds 100kVA, the main busbar of the main distribution board should be divided into two independent sections. These sections should be connected by circuit breakers or other approved devices, and the generators and other sets of equipment should be connected to these sections as evenly as possible. When the total installed capacity of the main generator is within 3, the generator screen set up for each generator should be made of steel plates to separate the combustible materials from each other. t||4.5 Wire
4.5.1 The internal wiring of the distribution board shall use copper core stranded gold wire with the highest allowable temperature not less than 75℃ and the voltage level shall be swept. The wire shall be routed in the inner part of the wiring board with a sluggish material, or fixed by clamps. The wire shall not be damaged at the threading point. The two braids shall have clear and durable marks in accordance with the requirements of the drawings. The distribution board shall be equipped with fixed supports or loads for external cables. 4.5.2 The cross-sectional area of ​​the insulated wire of the distribution board shall be 1.0mm. For low-profile single-edge wires with a diameter of 1.0mm or less, the bending radius shall not be less than 2 times of its outer diameter. When the wire area is greater than 1.0mm, the bending radius shall be greater than 3 times of its outer diameter. The filter wires on the distribution board and other active parts must have sufficient burnable bottom. 4.5.3 The high-power devices (power electrical appliances) connected to the load must not cause excessive falling during installation. 4.6 Insulation rot || tt || 4.6.1 The insulating materials of the distribution board should be durable, flammable and non-absorbent. The shrinkable materials such as aldehyde resin should be processed under dry conditions.
4.6.2 Under the standard conditions, the cold insulation resistance of the distribution board to the ground is not less than 10: M.GR/T11634-2000
4.6.3 Under the standard conditions, the distribution board shall be subjected to the acid withstand test in accordance with 5.7, and there shall be no leakage or 3-way phenomenon. After the test, the provisions of 4.6.2 shall be followed.
4.7 Connections
4.7.1 Each distribution board shall have a reliable grounding device. The surface plate with electrical components and the core of the frame, as well as the frame and the base, shall be connected to the ground; the secondary of the voltage transformer and the current transformer shall be connected separately and permanently marked: the protective grounding and working grounding shall be grounded with grounding wires and grounding nails. 4.7.2 The cross-sectional area of ​​the separately fixed grounding conductor shall comply with the provisions of Table 1. Table? Cross-sectional area of ​​the grounding conductor!
>2. 5~·_2n
4.8 Switches and protective devices
4.81 Short-circuit protection device
The small surface of the earthing body shall be double-sided
- but not less than 10
Q-5/2 but not less than 4
4.8.1.1 For the initial overcurrent (including the group circuit range), a fuse or circuit breaker should be set as a protection. The circuit breaker installed in the protection should have the corresponding protection capacity and the selectivity requirements of the system, and the characteristics (overcurrent tripping interval) should be compatible.
4.81.2 Except for the provisions of 1.8.1.1, the rated short-circuit breaking capacity of all short-circuit protection devices should not be less than the maximum value of the expected short-circuit current at the installation point (effective value).
4.81.3 Except for the provisions of 4.8.1.4, the rated short-circuit breaking capacity of all circuit breakers or switches that may be connected in the case of a short circuit should not be less than the maximum value of the expected short-circuit current at the installation point. 4.B.1.4 If there is a circuit breaker or circuit breaker with a required rated short-circuit breaking capacity (but not a generator stepper) as a backup on the generator side, it is allowed to use an auxiliary circuit breaker with a rated short-circuit breaking capacity and (or) rated short-circuit connecting capacity, and the short-circuit current is lower than the maximum short-circuit current at its installation point.
4.1.5 In circuits containing important equipment, the same circuit breaker or circuit breaker can be used as a backup protection for more than one circuit breaker. 4.82 Overload protection device
The overload protection device shall be suitable for the thermal characteristics of the equipment and circuit. The circuit with a rated current of more than 200A shall use fuses, and the circuit breaker or similar equipment shall be used for overload protection, except for the circuit used for short-circuit protection: 4.93 Grounding protection
On the grounding conductor, there shall be no circuit breakers and switches that are not linked to the insulation. 1.8.1 The main circuit breaker of the power generation plan Parallel operation and protection features
4.8.4.1 For generators running alone, two automatic circuit breakers shall be installed. Frequency-reducing protection elements shall be installed on each pole, and at least one load protection element shall be installed on the generator. For generators with rated output power less than 50kW, one fuse of the five fuses shall be allowed to be disconnected.
4.8..2 For generators running in parallel, two circuit breakers shall be installed on each generator, and frequency-reducing protection elements shall be installed on each pole. At the same time, at least two load protection elements shall be installed on the generator, and there shall be no reverse power protection with delayed action. 4.4.3 The rated current of the circuit breaker shall be less than the rated current of the generator. The trip setting value of the new circuit breaker shall be determined by the system design. If there are no special requirements, the trip setting value of the generator protection device is shown in Table 8. G
Long delay current trip||tt ||Dry time power outage
Instantaneous over-voltage electric buckle
Reverse rate relay
Oil dyeing machine system
Daily pressure protection
Preferential warning load (or storage)
G0T11634—2000
Table 8 Generator expansion rack protection installation connection buckle installation setting signal
Setting release
At the generator setting 125~135 hours 15- 30 self-60 shares: the generator offers a rated current of 2C~25, when it is not more than 0.6 tripping a warehouse and a parallel connection with a local party power output, it should be monitored at the same time in the protection of the motor of the large scale of the telephone
memory rate of 8~, delay 3~10 tripping in the power generation right 2%~6 times delay 10 tax deduction when half of the huge depth of the mutual setting of 75-35%, directly or disconnected. For 1 new circuit When the circuit is closed, it can be operated, including when the upper level is disconnected, and the delay time should be within 1%~11% of the rated voltage of the generator, and the delay time should not be shorter than 15mi. 4.8.5 Switches and protective devices for power storage 4.8.5.1 Types of switches and protective devices are shown in the table. Table Types of switches and protective devices Seven power supplies About the total protection equipment Type
Two slow-moving circuit breakers (each with a starting device) one circuit breaker (in each volume two installed circuit protection components and at least two furnace protection components) three and the road part of the drama two cameras under the United States (each with a service device) three circuit breakers (in 4 with two installed circuit protection components and at least two suction must be transferred on the protection: yuan cow) [I do not use a separate energy wire, when the device has an over-protection function, the cost of protection can be saved. 3 In the cavity machine according to the electrical circuit, without over-promotion, only set the source circuit protection. 4.8.52 The rated direct current, overload protection and short-circuit protection of the new tower or distribution use of the three-way circuit breaker shall be determined by the system design. 4.8.5.3 The transformer protection circuit of the power and lighting transformers shall be protected by short circuit and overload protection. The overload protection can also be set in the secondary circuit:
b) The secondary circuit of the transformers in parallel operation shall be equipped with high isolation: :) The switch and circuit breaker shall be able to withstand the shock current of the transformer. 4.8.5.4 The main distribution board shall be equipped with overvoltage and overcurrent protection. If there is a reverse link requirement, the short circuit protection of the line shall also be invested in the emergency switchboard. 4.8.5.5 The switchboard shall be equipped with the following protection devices for the feeder circuit: a) The generator and the half-power shall be locked mutually; b) The main power supply shall have interlocking protection for the emergency power supply; ) Emergency protection for the power generator, micro oil pump, etc. 4.8.6 Connection method
4.8.6.1 When using a plug-in type distribution circuit breaker, it should be able to be operated from the front of the board without cutting off the power supply: except for the need to disconnect and non-plug-in distribution circuit breakers,
GB/I11634-200D
4.8.6.2 When the need to disconnect the switch, knife switch, frame type circuit breaker is in the open position, the movable part should not be energized, 4.8. Fuse ||tt| |4.8.7.1 The fuse should be of the same type, and its structure should be in a certain order, so that the outer surface will not be cracked or damaged, and the melting metal liquid or the emitted gas should not damage the adjacent insulation.
4.8.2 The fuse should be replaced at a low temperature, and there should be no danger of dust or injury when the fuse is connected.
4.8.7.3 When the fuse is operated for a long time at the rated current, the temperature of the connecting terminal of the connected system should not exceed the highest working intensity of the connected system.
4.8.4 The fuse should have a permanent mark indicating the rated current, rated current, rated breaking capacity, etc.
4.8.5 The fuse should be installed as close as possible to the measuring point and in the circuit of the voltmeter, measuring instrument, grounding device, indicator light, etc. However, the voltage transformer (internal inductor) used for measuring instruments, grounding circuits, detection circuits such as motor control and indicator lights, etc., should not be equipped with circuit breakers. 4.9 Basic measuring instruments
4.9.1 The accuracy level of the power measuring instrument used in the distribution board should be selected according to the function of the transformer, but it should be less than 2.5 levels. 4.9.2 The upper limit of the voltmeter should be about 120% of the rated voltage of the fuel line, the upper limit of the ammeter should be 131% of the rated current of the line; the upper limit of the power meter should not be less than the rated power: 1 20%. The AC generator power meter for parallel operation should be able to indicate the reverse power limit of 0.5% of the rated auxiliary power. The power meter should have a scale of 110% of the rated frequency. The rated value of the measuring instrument should be marked clearly.
4.9.3 The generator control panel should be set according to the requirements of Table 10. The measuring instrument must be measured. 10 Generator control panel measuring instrument
Operation benefit
Single machine operation
Associated operation
Type of constant meter
Current t||Electricity meter
Power meter
Battery meter
Voltmeter
Work meter
Electricity meter
Average rate meter
Each string 6 (can measure each phase current) each generator only (measure each phase voltage) each generator (less than 50VA)
Each generator has a total of
a generator type (measure each line current) network only (one disconnector to measure each generator Phase (line) voltage, one meter for each generator (one for measuring the current, one for measuring the frequency of each machine*) One meter for each generator (one for measuring the frequency of each machine*) Note: When two or more generators are in parallel operation, the power meter must be equipped with a step-by-step monitoring device. The synchronization method can be selected by step-by-step or the same method, and the instruments, switches and indicating devices for archiving should be installed. The color of the synchronization indicator light should be the same color. 4.11 The insulation distribution system of the power, insulation and lighting, whether it is the primary system or the secondary system, must be equipped with a monitoring alarm that can continuously monitor the insulation resistance value, which can send out sound and light signals when the insulation resistance is abnormally low. 4.11.2 The leakage current flowing through the insulation monitoring transformer shall not exceed 0nA. 4.12. Indicator lights and buttons GB/T11634-2000 The indicator and button colors of the distribution board are shown in Table 11 and Table 12. The color of the indicator light and its meaning shall be in accordance with the approved design and approved by the safety committee. Neutral color, white. 4.13 Configuration devices
You can specify blue to represent red as the operating room, and can use your own color to represent the selected function.
Table 12 The colors and meanings of the buttons are as follows
In the first emergency, the body disconnects the main insurance
and the starter is connected
Red and yellow, the colors do not include any regular meanings
Based on the demand, the distribution board may be equipped with the following devices: a) The panel lighting of the distribution board or the main light (b) The white control device of the seven stations
) is installed, F automatic or automatic electric speed regulator>Let the timer, the width meter, etc.
5 Test method
5.1 General inspection
5.1.1 Use the monthly measurement method to check the external structure of the distribution board. After the test, the provisions of 4.2.1~4.2.3 and 4.2.5~4.2.10 shall be adopted. 5.1.2 According to the production inspection and acceptance regulations, check the installation of the distribution appliances, the connection of the busbar, the phase sequence or polarity, the label, the grounding, and the distance of the electrical image. The results shall comply with the provisions of 4.4. 5.1.3 Use the daily method to check the effectiveness of the conductor and its modification. The results shall comply with the provisions of 1.5. 5.2 Power on test
5.2.1 Before the test, check most of the distribution board, first check that all the lines are correct, and then check the city route diagram of the device, and conduct a self-operation test on the annual circuit. The results shall meet the requirements in 1.3. 5.2.2 The test resistor is connected to the power supply to check the connection type. The equipment should meet the requirements of 4.1. 5.3 Generator protection test
5.3.1 When the input current value is 125%-1.45% of the rated current of the generator, measure the main switch trip delay time. The results shall comply with the provisions of Table 8.
5.3.2 The auxiliary input starting value is 2.30%-250% of the rated current of the generator. Measure the main switch trip time: the station should comply with the requirements of Table 5.
GB/T 11634700C
5.3.3 When the voltage drops to 7%-3 of the rated voltage, the main switch should trip: the results should meet the requirements of the table. 5.3.4 Input the current value of the reverse current protection, and the main switch should trip within the specified time. The results should comply with the requirements of the clothing! 5.3.5 Input the current of the generator, the selected load shall automatically go: The specifications of Table 8 shall be met. 5.4 Circuit breaker trip test
According to the requirements, the load breaker is fed with current and the trip time of the switch shall be measured. The results shall comply with the provisions of 4.8.1. 5.5 Temperature rise test
The rated current of the generator is passed through the busbar and the test shall be carried out according to the following procedures: 5.5.1 When measuring with a thermocouple, the low voltage should be covered at the measuring point and fixed to the measuring position by a standing method. The two wires of the thermocouple should be twisted with each other and avoid the influence of high-intensity magnetic fields as much as possible. 5.5.2 When measuring with a thermometer, the head of the thermometer should be as close to the measuring point as possible to ensure good thermal stability.
5.5.3 The test should be conducted for a sufficient time to allow the temperature rise to stabilize. In fact, when the temperature change exceeds 1°C per hour, it is considered that the specified temperature has been reached. While recording the specified temperature rise, the environmental temperature should also be recorded. 5.5.4 The temperature rise of the distribution board should be confirmed after the service department confirms that the temperature has reached the specified temperature. The result should meet the requirements of the table. 5.5.5 For products of the same model, the temperature rise test can be exempted from the second set after obtaining the approval of the inspection department. 5.6 Insulation resistance measurement
Use a flash meter in accordance with the requirements of Table 13 to measure the insulation distance of the distribution board to the ground after the withstand voltage test. The insulation resistance should meet the requirements of 1.6.2.
Megohmmeter voltage level
determine the voltage
>60~600
5. For withstand voltage test, the test voltage is respectively provided for: 1) between the whole and main circuit and the ground
6) between each circuit.
5.7.1 Test current
The non-grade test power supply of the village room has enough capacity to ensure that the test voltage has nothing to do with the leakage current. When its high-voltage input terminal is short-circuited, the current is not more than (.5A). The test voltage should be approximately sinusoidal, with a regularity between 25 and 1H. The test voltage value is shown in Table 14. Table 14 Test output voltage
Two light voltages
5.7.2 Test steps
Type of monitoring||tt ||5.2.1 Check that there are no parts (such as thin films, semiconductor devices, etc.) that cannot withstand the test voltage inside the distribution board. These devices should be removed or connected away before the test.
5.7.2.2 Apply 50% of the specified test voltage to the test part, then increase the voltage to the specified full voltage value, keep it at this voltage for 1ir, and then gradually reduce the voltage to zero voltage before removing it: 5.3 Test results
The acid test results before the test should meet the requirements of: 11 Test current The non-grade test power supply of the village room has sufficient capacity to ensure that the test voltage has nothing to do with the leakage current. When its high-voltage input terminal is short-circuited, the current is not more than (.5A). The test voltage should be approximately sinusoidal with a frequency between 25 and 1H. The test voltage values ​​are shown in Table 14. Table 14 Test output voltage and voltage 5.7.2 Test procedure 5.2 .1 Check that there are no parts (such as thin films, semiconductor devices, etc.) that cannot withstand the test voltage inside the distribution board. These devices should be removed or connected away before the test.
5.7.2.2 Apply 50% of the specified test voltage to the test part, then steadily increase the voltage to the specified full voltage value. Keep this voltage for 1ir, then gradually reduce the voltage to zero voltage and remove it: 5.7.3 Test results
The acid test results before the test should meet the requirements of: 11 Test current The non-grade test power supply of the village room has sufficient capacity to ensure that the test voltage has nothing to do with the leakage current. When its high-voltage input terminal is short-circuited, the current is not more than (.5A). The test voltage should be approximately sinusoidal with a frequency between 25 and 1H. The test voltage values ​​are shown in Table 14. Table 14 Test output voltage and voltage 5.7.2 Test procedure 5.2 .1 Check that there are no parts (such as thin films, semiconductor devices, etc.) that cannot withstand the test voltage inside the distribution board. These devices should be removed or connected away before the test.
5.7.2.2 Apply 50% of the specified test voltage to the test part, then steadily increase the voltage to the specified full voltage value. Keep this voltage for 1ir, then gradually reduce the voltage to zero voltage and remove it: 5.7.3 Test results
The acid test results before the test should meet the requirements of: 1
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.