Electrization installation requirement for fiber-optical communication equipment of stationary ground
Some standard content:
Military Standard of the Electronic Industry of the People's Republic of China Technical Requirements for Mechanical and Electrical Installation of Fiber-optical Communication Equipment Electrical Installation Requirements for Stationary Ground Fiber-optical Communication Equipment Performance requirement for machinery electrification installation of friber-optical communication equipment Electrification installation requirement for fiber-optical communication equipment of stationary ground 1 Subject content and scope of application
This standard specifies the basic technical requirements for the electrical installation of stationary ground fiber-optic communication equipment. This standard applies to the electrical installation of stationary ground fiber-optic communication equipment 2 Reference standards
GJB425
General technical conditions for AC power frequency gasoline generator sets SJ20049-92
SJ20048
Technical requirements for mechanical and electrical installation of fiber-optic communication equipment Mechanical installation requirements for stationary ground fiber-optic communication equipment
3 General requirements
3.1 The installation should ensure that the installed fiber-optic communication equipment (hereinafter referred to as equipment) is consistent with the electrical schematic and process documents. Changes and replacements of the materials, components and parts used must be approved through the prescribed procedures. 3.2 All materials, components and parts submitted for installation shall have factory certificates of conformity and shall comply with the requirements of current standards and design documents.
3.3 The installation conditions of the machine room shall be determined in accordance with the provisions of Chapter 6 of SJ20048. During the installation process, any damage to the installed parts shall be avoided and their performance shall not be reduced. If mechanical processing is necessary, it shall be ensured that the assembled components, parts and parts are not damaged.
3.4 The layout and routing of the whole machine are reasonable, which is convenient for assembly, inspection, adjustment and maintenance. Power supply
4.1 AC power supply
The AC power supply shall be selected according to Table 1.
: Issued by China Electronics Industry Corporation on February 1, 1992 and implemented on May 1, 1992
Parameters of AC power supply
Nominal voltage
Voltage change
Nominal frequency
Frequency change
4.2 DC power supply
SJ20049—92
Rated power of equipment
Less than 1kVA
220 (single phase)
The selection of DC power supply should comply with the requirements of the equipment product standards. 4.3 Self-provided power supply
1kVA100kVA
220/380
(three-phase four-wire)
More than 100kVA
According to the provisions of the specific equipment standards
, AC diesel generators with power distribution equipment should be used for power supply. Under the premise of ensuring performance indicators, small size and light weight should be strived for.
The performance requirements of the generator set should comply with the provisions of GJB425. 4.4 Special power supply
When using uninterruptible power supply and other high-quality, low-tolerance special power supplies, the requirements shall be in accordance with the provisions of Articles 4.1 and 4.2.
5 Cables, wires and wire ties
5.1 The specifications of cables and wires should be reasonably selected according to the current size, voltage level, frequency range and use conditions. 5.2 When cutting wires, the appearance should be carefully checked. The insulation layer should not be damaged or deteriorated, the core wire should not be rusted, and the wires should not be connected with short wires.
5.3 Cables, wires and wire ties should be kept away from the heating parts of the equipment as much as possible. 5.4 Cables, wires and wire ties should be as short as possible, but sufficient slack should be provided in the following circumstances: a. Prevent excessive stress on cable routing and connection; b. Be able to move and replace parts without disconnecting other parts during use; c.
Convenient for on-site repair of broken or disconnected wires. 5.5 When cables are laid straight in the wiring trough, they should meet the following requirements: a. The first cable to be laid down is on the lower layer, and the last cable to be laid down is on the upper layer; b. Cables cannot be piled up too high in the wiring trough. Generally, no more than 3 cables are arranged in a single row, no more than 5 cables are arranged in a double row, and no more than 9 cables are arranged in a triple row;
C. Avoid reselecting cables of different diameters as much as possible. If they must be re-sent, the cable with a smaller diameter should be placed on the upper layer; d. No cable on the same plane can cross another cable. 5.6 When cables, wires and wire ties pass through walls or metal plates, and when they turn along the sharp edges of structural parts, they should be equipped with protective sleeves and pads.
SJ20049—92
5.7 All shielded wires and bare wires that may short-circuit should be insulated. 5.8 When the wire transitions from the fixed part to the movable part, sufficient margin should be left. In the transition area, the wire should be bent into a "U" shape or coiled into a coil. The "U"-shaped bending part should not be tied. To prevent wear, anti-wear coating should be adopted. 5.9 When the wire tie is bent, it should be naturally bent according to the size and shape of the structure. The bending radius of the wire tie shall not be less than 5 times the diameter of the wire tie. The bending radius of the cable, unless otherwise specified, is generally not less than 5 times its diameter. 5.10 The beginning and end of the wire and wire tie, the turning point and every section of the straight part should be fixed with wire clamps and the bottom plate or rack. The recommended values of the wire clamp distance of the straight part are shown in Table 2. Table 2
Less than 10
Card distance
Not more than 300
Not more than 350
Not more than 500
5.11 Wire clamps can be made of plastic products, plastic-wrapped metal products or metal products. Its shape should be adapted to the cross-sectional shape of the clamped wire and wire bundle, and it is not allowed to damage the wire and wire bundle due to the use of wire clamps. 5.12 After the wires are tied, the length of the wire outlet is allowed to be 0~10mm greater than the length specified in the drawing. 5.13 When tying the wire bundles, no matter whether silk thread, linen thread, nylon thread, plastic buckle, serpentine tube, gluing, etc. are used, they should be neat and beautiful, with appropriate tightness.
5.14 Under the condition of no mutual interference or coupling, wires and shielded wires with the same direction are allowed to be tied into wire bundles. 5.15 When stripping the insulation layer of the wire, care should be taken to avoid damage to the core wire or the retained insulation layer. The number of damaged or cut multi-core twisted wires shall comply with the provisions of Table 3.
Number of strands of multi-core twisted wire
Less than 7
Greater than 40
Maximum number of damaged or cut multi-core twisted wires
5.16 Except for high-frequency grounding points, three or more wires are not allowed to be welded at the same welding point. If exceeded, transfer measures should be taken.
5.17 When two wires are connected to each other, terminal blocks, connecting plates, etc. should be used as connecting points, and each screw is allowed to fasten a maximum of two welding pieces. 5.18 The connection between soft wires and hard wires should use intermediate connections (terminal blocks, terminal boards, etc.) for active connection. It is not allowed to use nuts to directly fix wires without welding pieces. 5.19 For wires with fiber protective layers, measures such as glue coating or tightening with transparent polyethylene sleeves should be taken to prevent loosening after removing the ends.
6 Optical cables and optical fiber (cable) connectors
SJ20049-—92
6.1 The appearance of the optical cable should be carefully checked during installation, and the outer sheath should not be damaged. 6.2 When cutting the optical cable, sufficient margin should be left in the length to ensure that there is enough length after multiple fusion splicing. 6.3 The optical cable should be laid as close as possible and leave appropriate gaps between it and the heat-generating components and parts. 6.4 The optical cable should provide sufficient slack in the following situations: a. Prevent excessive stress in the wiring and connection of the optical cable; b. Be able to move and replace parts during use without disconnecting other parts; c. Facilitate the repair of faults.
6.5 The cabling should be straight and neat, and short optical cables and single-core optical cables should be laid first, followed by multi-core optical cables and long optical cables. When the optical cable is laid in parallel with the electrical cable, it must not be placed under the electrical cable.
6.6 When the optical cable passes through a wall or metal plate, or when it turns along the sharp edge of a structure, it should be equipped with a protective cover or cushion. 6.7 When the optical cable is bent, it should be allowed to bend naturally, and the bending radius should not be less than 15 times the diameter of the optical cable. 6.8 The fixing of the optical cable shall comply with the provisions of Article 5.10. 6.9 The line clips for fixing the optical cable shall comply with the provisions of Article 5.11. 6.10 Optical fiber (cable) connectors should be selected according to tactical use requirements and tested when necessary. Appropriate space should be left after the connector is installed to ensure that the optical fiber (cable) is not squeezed and deformed. 7 Welding of wires and connection of optical fibers
7.1 Welding of wires
7.1.1 After the insulation layer of the wire end is stripped, it should be tightened and tinned in time. When tinning, the insulation layer should not be damaged by scalding. The tinned layer should be kept 1~2mm away from the insulation end.
7.1.2 The welding point should be welded once as much as possible to avoid repeated welding and tinning for too long. 7.1.3. Neutral flux should be used. Acidic or corrosive flux is not allowed. There should be no residual flux on the welding surface. 7.1.4 The welding should be firm, without wrong welding, missing welding and cold welding. 7.2 Optical fiber connection
7.2.1 The permanent connection of optical fiber can be divided into connection using adhesive and fusion splicing using heating method. 7.2.2 Before connecting the optical fiber, the outer skin of the optical cable and the optical fiber coating should be removed first, and the optical fiber should not be damaged. 7.2.3 When cutting the optical fiber, special optical fiber pliers or other tools should be used to operate so that the cut end face of the optical fiber is a flat mirror and perpendicular to the optical fiber axis.
7.2.4 After aligning and docking the optical fiber axis on the special tool, bonding or fusion splicing can be carried out. 7.2.5 Under steady-state conditions, the connection loss should not be greater than 0.2dB after connection using the above connection method. 7.2.6 After the optical fiber bonding or fusion splicing is completed, a protective device should be installed. 8 Safety requirements
8.1 Protection requirements
8.1.1 Dangerous parts of the equipment should be marked with warning symbols or equipped with protective devices. 8.1.2 The equipment should have protective devices such as fuses or insurance relays. 8.1.3 The fuse should be installed in a place where it is easy to replace quickly. 8.2 Grounding requirements
SJ20049—92
8.2.1 The grounding method, grounding material and grounding technology should be reasonably selected according to the grounding design, and working grounding, shielding grounding, protective grounding, lightning protection grounding and test grounding should be properly carried out. The grounding system should have good electrical contact, a firm and reliable structure, and the grounding resistance and contact resistance should meet the requirements of the equipment product standards. 8.2.2 An artificial grounding body should be set up to ensure that the equipment casing is well grounded. The shielded wire shall not be used as a public ground wire. 8.2.3 After the shock absorber is installed, there should be a reliable protective ground wire. 8.3 Protection requirements
8.3.1 When the main power switch of the equipment is in the "off" position, all power supplies of the equipment should be cut off. 8.3.2 Protective measures should be taken for exposed parts of the equipment where the DC or AC working voltage exceeds 24V. 8.4 Lightning protection requirements
8.4.1 Equipment installed outdoors should have lightning protection devices. 8.4.2 Dischargers should be installed at the entry ends of cables, armored or optical cables with metal core wires, power cables, telephone lines, etc. The connection of the discharger should not affect the normal operation of the equipment.
8.5 Radiation protection requirements
8.5.1 Radio frequency radiation
The shielding device and radiation protection measures of the equipment should be installed in accordance with the requirements of the equipment product standards and meet the following requirements: Electric field component: not more than 20V/m;
Magnetic field component: not more than 5A/m.
8.5.2 Laser radiation
After the equipment is installed, it should be able to effectively prevent laser radiation, and the laser density entering the human eye should be less than 5×10-6J/cm. When the density is higher than this value, protective equipment should be provided. 8.6 Noise limit
8.6.1 The A-weighted noise level at 1m away from the equipment should be less than 55dB. 8.6.2 The limit of the oil engine power supply noise should comply with the provisions of Table 4. Table 4
Oil engine power: kw
Noise limit
9 Marking
9.1 The nameplate, signboard, and label on the equipment should not be damaged during installation. If damaged, remedial measures should be taken. 12
9.2 There should be clear markings indicating the purpose and function (such as "disconnect", "connect", etc.) near all control devices and detection devices. 9.3 In order to facilitate testing and fault location, the wires, optical fibers, wire tie bifurcations and their ends should be marked with colors or numbers. The markings should be clear, accurate and firm. 9.4 The markings can be made directly on the wires and optical cables, or with marking sleeves. The digital markings should be read from left to right from the processed end of the wire or optical fiber, or a dot should be placed in the lower right corner of the reading. 9.5 When the wires are connected through the adapter plate with the end sleeve welding piece, the end sleeve welding piece should be put into the sleeve, and the sleeve number should be consistent with the adapter plate number. 9.6 The recommended colors of the wires and plastic sleeves used in the installation are shown in Table 5 and Table 6. 5
Wire color
Components
High voltage, positive voltage, C
Negative voltage
Semiconductor transistor
SJ20049-92
Signal line
Three-phase circuit
AC three-phase
circuit B phase
field effect transistor
semiconductor diode without designated color
and capacitor with polarity
yellow-green double color
or black
zero line
double base transistor
Note: ①When there are several groups of high voltage, the wire color can be distinguished from light to dark (such as from pink to red → purple) as the voltage increases. ②The identification color of isolation wire, multi-core cable and bare wire is not restricted by Table 5. ③When the integrated circuit is installed with a mounting seat, it is not restricted by Table 6. 10
Inspection and acceptance
10.1 Inspection
After the equipment is installed, the following items should be inspected: a.
Whether the required technical documents are complete;
Whether the various markings are complete and correct;
Whether the power connection complies with the provisions of this standard, and whether the current and voltage capacity of the power switch meets the requirements; whether various safety protection measures are reliable;
Whether the ventilation and heat dissipation parts are in good condition; whether the optical fiber (cable) and cable meet the wiring requirements; whether the grounding connection is firm and reliable.
10.2 Acceptance
Acceptance should comply with the following provisions:
Acceptance should be carried out after commissioning is completed and operation is carried out for one week; the installer should submit relevant information to the user; the user and the installer should carry out the acceptance in accordance with the provisions of this standard and the equipment product standard: if any parts that do not meet the requirements are found, the responsible party should be responsible for taking measures to solve them; the acceptance is signed by the user and the installer. Blue
Additional Notes:
SJ20049-92
This standard was proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. This standard was drafted by the 34th Institute of the Ministry of Machinery and Electronics Industry and China Electronics Technology Standardization Institute. The main drafters of this standard are Shi Liangliu, Mo Jinwen and Wang Ping. Project code: B93020.1 The A-weighted noise level at 1m away from the equipment should be less than 55dB. 8.6.2 The limit of the noise of the oil engine power supply should comply with the provisions of Table 4. Table 4
Oil engine power: kw
Noise limit
9 Marking
9.1 The nameplate, signboard and label on the equipment should not be damaged during installation. If damaged, remedial measures should be taken. 12
9.2 There should be clear markings indicating the purpose and function (such as "disconnect", "connect", etc.) near all control devices and detection devices. 9.3 In order to facilitate testing and fault location, the bifurcation of wires, optical fibers, wire ties and their ends should be marked with colors or numbers. The markings should be clear, accurate and firm. 9.4 The markings can be marked directly on the wires and optical cables, or with marking sleeves. The digital markings should be read from left to right from the processed end of the wire and optical fiber, or a dot should be placed in the lower right corner of the reading. 9.5 When the wire is connected through the adapter plate with the end sleeve welding piece, the end sleeve welding piece should be covered with a sleeve, and the sleeve number should be consistent with the adapter plate number. 9.6 The recommended colors of the wires and plastic sleeves used in the installation are shown in Table 5 and Table 6. 5
Wire color
Components
High voltage, positive voltage, AC three-phase circuit C
Negative voltage
Semiconductor transistor
SJ20049-92
Signal line AC
Three-phase circuit
AC three-phase
circuit B phase
field effect transistor
semiconductor diode without designated color
and capacitor with polarity
yellow-green double color
or black
zero line
double base transistor
Note: ①When there are several groups of high voltage, the wire color can be distinguished from light to dark (such as from pink to red → purple) as the voltage increases. ②The identification color of isolation wire, multi-core cable and bare wire is not restricted by Table 5. ③When the integrated circuit is installed with a mounting seat, it is not restricted by Table 6. 10
Inspection and acceptance
10.1 Inspection
After the equipment is installed, the following items should be inspected: a.
Whether the required technical documents are complete;
Whether the various markings are complete and correct;
Whether the power connection complies with the provisions of this standard, and whether the current and voltage capacity of the power switch meets the requirements; whether various safety protection measures are reliable;
Whether the ventilation and heat dissipation parts are in good condition; whether the optical fiber (cable) and cable meet the wiring requirements; whether the grounding connection is firm and reliable.
10.2 Acceptance
Acceptance should comply with the following provisions:
Acceptance should be carried out after commissioning is completed and operation is carried out for one week; the installer should submit relevant information to the user; the user and the installer should carry out the acceptance in accordance with the provisions of this standard and the equipment product standard: if any parts that do not meet the requirements are found, the responsible party should be responsible for taking measures to solve them; the acceptance is signed by the user and the installer. Blue
Additional Notes:
SJ20049-92
This standard was proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. This standard was drafted by the 34th Institute of the Ministry of Machinery and Electronics Industry and China Electronics Technology Standardization Institute. The main drafters of this standard are Shi Liangliu, Mo Jinwen and Wang Ping. Project code: B93020.1 The A-weighted noise level at 1m away from the equipment should be less than 55dB. 8.6.2 The limit of the noise of the oil engine power supply should comply with the provisions of Table 4. Table 4
Oil engine power: kw
Noise limit
9 Marking
9.1 The nameplate, signboard and label on the equipment should not be damaged during installation. If damaged, remedial measures should be taken. 12
9.2 There should be clear markings indicating the purpose and function (such as "disconnect", "connect", etc.) near all control devices and detection devices. 9.3 In order to facilitate testing and fault location, the bifurcation of wires, optical fibers, wire ties and their ends should be marked with colors or numbers. The markings should be clear, accurate and firm. 9.4 The markings can be marked directly on the wires and optical cables, or with marking sleeves. The digital markings should be read from left to right from the processed end of the wire and optical fiber, or a dot should be placed in the lower right corner of the reading. 9.5 When the wire is connected through the adapter plate with the end sleeve welding piece, the end sleeve welding piece should be covered with a sleeve, and the sleeve number should be consistent with the adapter plate number. 9.6 The recommended colors of the wires and plastic sleeves used in the installation are shown in Table 5 and Table 6. 5
Wire color
Components
High voltage, positive voltage, AC three-phase circuit C
Negative voltage
Semiconductor transistor
SJ20049-92
Signal line AC
Three-phase circuit
AC three-phase
circuit B phase
field effect transistor
semiconductor diode without designated color
and capacitor with polarity
yellow-green double color
or black
zero line
double base transistor
Note: ①When there are several groups of high voltage, the wire color can be distinguished from light to dark (such as from pink to red → purple) as the voltage increases. ②The identification color of isolation wire, multi-core cable and bare wire is not restricted by Table 5. ③When the integrated circuit is installed with a mounting seat, it is not restricted by Table 6. 10
Inspection and acceptance
10.1 Inspection
After the equipment is installed, the following items should be inspected: a.
Whether the required technical documents are complete;
Whether the various markings are complete and correct;
Whether the power connection complies with the provisions of this standard, and whether the current and voltage capacity of the power switch meets the requirements; whether various safety protection measures are reliable;
Whether the ventilation and heat dissipation parts are in good condition; whether the optical fiber (cable) and cable meet the wiring requirements; whether the grounding connection is firm and reliable.
10.2 Acceptance
Acceptance should comply with the following provisions:
Acceptance should be carried out after commissioning is completed and operation is carried out for one week; the installer should submit relevant information to the user; the user and the installer should carry out the acceptance in accordance with the provisions of this standard and the equipment product standard: if any parts that do not meet the requirements are found, the responsible party should be responsible for taking measures to solve them; the acceptance is signed by the user and the installer. Blue
Additional Notes:
SJ20049-92bzxz.net
This standard was proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. This standard was drafted by the 34th Institute of the Ministry of Machinery and Electronics Industry and China Electronics Technology Standardization Institute. The main drafters of this standard are Shi Liangliu, Mo Jinwen and Wang Ping. Project code: B93020.
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.