JB/T 8774.14-1998 Products produced according to this standard comply with the relevant provisions of GB/T 5226.1-1996 "Electrical Equipment for Machinery Industry Part 1: General Technical Conditions". This standard specifies the main dimensions, markings, technical requirements, test methods, inspection rules, markings, packaging, transportation and storage of JDG grounding terminal blocks (hereinafter referred to as grounding terminals), which are accessories for machine tool electrical systems. This standard applies to JDG grounding terminal blocks that protect personal and machine tool safety. Other mechanical electrical systems can also refer to it. JB/T 8774.14-1998 JDG grounding terminal blocks, accessories for machine tool electrical systems JB/T8774.14-1998 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/F8774.1--8774.15—1998
Machine Tool Electrical System Accessories
1998-07-17 Issued
National Machinery Industry Bureau
1998-12-01 Implementation
JH/T 8774.14-1998
This standard is formulated on the basis of summarizing many years of experience in producing machine tool electrical system auxiliary parts JIIG power terminal blocks. The products produced in accordance with this standard conform to the relevant regulations of GB/T5226.1-1996 Industrial Machinery Electrical Equipment Part 1: General Support Conditions. This standard is proposed by the National Technical Committee for the Promotion of Cutting Machine Tool Standards. This standard is under the jurisdiction of the Beijing Machine Tool Research Institute of the Ministry of Machinery Industry. Drafting units of this standard: Beijing Machine Tool Research Institute of the Ministry of Machinery Industry, Shanghai Huadong Electric Factory, Beijing No. 1 Machine Tool Factory, Beijing No. 2 Machine Tool Factory 47
Machinery Industry Standard of the People's Republic of China
Machine Tool Electrical System Accessories
ILG Grounding Terminal Block
JB/T 8774.14-1998
This standard specifies the grounding terminal block of the machine electrical system with a simple grounding terminal block. The requirements include small size, length, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, etc. This standard is applicable to the grounding terminal block for protecting personnel and machine tool safety. It can also be used for reference by other mechanical systems. 2 Reference Standards
The provisions contained in the following standards constitute the provisions of the standard through the use of this standard. When this standard is published, the provisions indicated in this standard are effective. All standard products will be adopted: all parties to this standard should discuss the interoperability of the latest version of the reference standard. GA19190 ||tt ||
3 Main dimensions
Other packaging and transportation symbols
Industrial machinery outlet pipe design Part 1: General technical requirements Production of copper alloy connection technical conditions
Batch inspection counting and sampling detailed procedures and sample tables (applicable to continuous batch inspection) Technical requirements for hot-spot pressure-recovery electrical appliances
Packaging technical conditions for tropical electrical products
Copper three-joint terminals for wires Part 1: 0.5~5.0mm wire crimping terminals Wire copper crimping terminals Part 2: 1C-3(10:m wire copper crimping terminals Main dimensions of grounding bars See No. 1--Reading and Table 1--4×
Figure IA type
Guohao Machinery Industry 198--1 7 approved
112 implemented
swimming condensation specification d
bee control specification selection:
screw type:
JB/T8774.14-199RbzxZ.net
screw allowable quantity
Figure 2B type
screw this specification book:
potential loss squeeze 4
JD/T8774.14-1998
Figure C type
thread specification d:
continued allowable quantity
pass increase international brand
exploration effective specification mountain
source number,
1 mark
must be effective machine landing.
JB/T A774.14.--199R
Number of screws
4.1 The marking of grounding screws shall be composed of code, type code, specification and quantity of grounding screws as follows: ILG
4.2 Marking example
Heat resistance, salt spray resistance, number and specification of grounding screws
Type (A, B, C, D type
Number of grounding screws and specification
Type code: Screw size M81). M6 (4, M4 (2) Grounding screws are marked with JDG/C-M8+4M6+2M4JB/T X774.14-1a98: When adding heat source, the requirements of dance and government should be marked with "Jiang". 5 Technical requirements
5. T operation case
s. 1.1 The upper limit of the ambient air temperature shall not exceed 4°C. 1) The 4h half-average of the ambient air temperature shall not exceed 35°C. The lower limit of the ambient air temperature shall not exceed 5°C. 5. Small and large conditions: When the ambient air temperature is 43°C, the relative humidity shall not exceed 50% and the average relative humidity of the product shall be lower than 50%. At the same time, the monthly minimum humidity shall be 2°C, and condensation on the surface of the product shall not occur. 2. The grounding must comply with the provisions of Chapter 1. 5.3 Under any 10/MTOA alternating current, the voltage between the two grounding pins in the grounding bar should meet the requirements of GB22.1. 5.4 The grounding bar should meet the requirements of GB117%, JB/T 8774.14-1998. 5.5 The grounding bar should be treated to prevent mechanical, chemical or electrochemical effects that weaken the conductive energy. 5.6 The grounding bar should have sufficient resolution and conductivity to maintain reliable mechanical and electrical connection with the conductor. The inductive terminal should meet the requirements of JB/T24am.1 and m/T2456.2. 5. The tightness of the grounding probe and the copper terminal of the conductor must meet the requirements of Table 5. 5
Grounding structure
Actuator conductor distance
5.8 Users need to pass humidity, heat, salt spray, and bacteria requirements. The product should meet the requirements of JB. 5.9 The product should be able to withstand a frequency of 5UHz (positive filter), an acceleration of E m/g, and a vibration of 5mm. X, Y.2 The two sides need to move for 1h each + the grounding nails should not be loose.
5.10 Grounding connection requirements
5.10.1 The grounding bar is made of materials that can meet the requirements of C1176 and is assembled with steel fastening screws. 5.10.2 The grounding bar should have a protective grounding number. 6 Test method
1 The product should be tested in a clean environment with normal temperature and no dust. 6.2 Visually inspect the product appearance quality
.3 Use a voltmeter and an AC ammeter of more than 10A to measure the voltage between any grounding frequency of the grounding bar. 7.1 Each grounding bar must pass the inspection before leaving the factory, and a product certificate is attached. 7.2 Delivery inspection
Factory inspection is divided into routine inspection and sampling inspection. 7.2. Routine inspection
Routine inspection should be carried out according to 5.2.5.4.5.5 and 5.10. 7.2.2 Sampling inspection
Under the premise of strict quality inspection, it is allowed to conduct random inspection on the products in batches, according to the batch inspection counting sequence and sampling table 2828. If the same plan is used three times, the content of Table 6 will be used. When one piece is qualified, it is allowed to screen and re-inspect the unqualified pieces according to the strict sampling plan. If it still does not meet the requirements, this batch of products will be accepted and sent for disposal. Table
Inspection Item Name
Appearance
Inspection Dimension
Test Grounding Area
According to the Specifications
Qualified Quality
8 Marking, Packaging, Transportation and Storage
JB/T 8774.14-1998
8.1 The user identification label should be attached to the product location. The label should be clear and the product should not be recorded in the product identification date. 8.2 The grounding bar should be packed in a special bag and put into a box or a small box, and tied firmly. 8.3 The markings on the packaging box should meet the requirements of B191. The markings on the packaging box are as follows:) Product model and name:
) Product quantity:
C) Gross or net weight of the packaging box,
d) Manufacturer name and address:
! "Paste", "Handle with care" or other symbols or signs f) Dimensions of the packaging box: length × height × width,
B.4 During transportation and storage of products, personnel must not make any technical adjustments. 8.5 Products should be used in a clean, dry, ventilated, gas-free place. The relative humidity of the environment should not exceed 8556. The temperature should not be higher than 0°C and not lower than -5°C. 8.6 Products with moisture-proof, fire-resistant, etc., and the markings on the packaging box should comply with the provisions of J82. 33
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