GB 22447-2008General specifications for the safety of balancing machines (English PDF)

4.1 General Requirements

4.1.1 balanced machine design the parts, considering its function does not affect the case, there should be no damage to the body may cause sharp edges, sharp Angle, projecting portion, and a rough surface may scratch the body and clothes of various openings and the like.

4.1.2 rotating balancing machines should be avoided, and swing drive components directly touch the body in case of danger.

Design Structure 4.1.3 balanced machine parts strength and stiffness shall comply with safety requirements.

4.1.4 balancing machine should have good electrical insulation, to ensure their safety and reliability.

4.1.5 guards and safety devices should meet the following requirements.

--- Durable structure;

--- Does not add any additional danger;

--- Its location away from the danger zone should have sufficient distance;

--- Sight obstacles generated during use is minimized.

4.2 Balancing machine guards and other safety measures

Balancing machine shields and other protective measures, protection rating shall comply with the provisions of GB 12977.

4.3 Electrical Equipment

4.3.1 Protective earth circuit continuity

Protective earthing circuit continuity requirements and test methods should be consistent with the provisions of 19.2 GB 5226.1-2002.

4.3.2 Insulation resistance

Requirements and test methods of insulation resistance should be consistent with the provisions of 19.3 GB 5226.1-2002.

4.3.3 Pressure test

Pressure test and test conditions should be consistent with GB 5226.1-2002 provisions in 19.4.

4.3.4 Electric shock protection

4.3.4.1 Electrical equipment should have the protection of personal safety, the ability to prevent electric shock.

4.3.4.2 Protection cabinet shall comply with one of the following requirements.

--- After opening the cabinet and use a key or tool, and open the door, all the above electrical cabinet Paul Andrew Low Voltage (PELV) live parts it should be protected to prevent accidental electrocution.

--- If you open the door without the use of a key or tool, or disconnect the live part can not work (such as changing a light bulb or replace fuse) shall be set in the electric cabinet baffle to prevent contact with live parts. When Paul Andrew voltage and low voltage below, may not be provided Bezel.

4.3.4.3 Application of insulation charged body completely covered, using only way to get rid of damaged insulation. Under normal operating conditions must Edge material should be able to withstand the mechanical, chemical, electrical and thermal stress. Paints, varnishes and similar products are not suitable alone as a protective function properly Under conditions as electrical shock.

4.3.4.4 In case of leakage of electric shock protection, protective measures should be used either as follows.

--- The parts exposed to the protective conductor on the circuit;

--- Using the leakage automatically cut off power protection switch.

All bare conductors and electrical equipment parts 4.3.4.5 balancing machine (including the base), should be dedicated to the protective grounding terminal.

4.3.4.6 Metal hose not be used as a ground wire. Metal hoses and metal sheathing of all cables (steel, aluminum, sets, etc.) must be protected access Good contact to the circuit.

4.3.4.7 If you need to remove a part of the electrical equipment were charged adjustment and maintenance, should be used to protect their bare conductor wire zero Member connected to a protective earth circuit.

4.3.4.8 prohibit the use of protective earthing circuit switch or circuit breaker.

4.3.4.9 When the protective earthing circuit continuity available mobile collector or disconnect connector, protective earthing circuit should only be energized conductors all then disconnect after disconnection and protective earthing circuit continuity should be re-established before reconnect all energized conductors.

4.3.4.10 shock protection, practical and visually inspected.

4.3.5 Basic requirements components, wires and terminals

When 4.3.5.1 Electrical equipment is provided with several power switch, there should be a total switch, and should be sufficient cutting capacity, but should not be cut off safety Grounded. The power switch is not allowed to use metal handle switch.

4.3.5.2 if a sudden power failure during use, and then when power is restored, should prevent electric drives and other devices automatically connected.

4.3.5.3 Electrical equipment and circuits external end plugs, or use should be added to cover the groove as possible.

4.3.5.4 unidirectional rotation of the motor should be in the appropriate parts of the motor direction of rotation indicated by the arrows.

4.3.5.5 All wiring connections, especially the protection circuit connected to the ground, should be solid and reliable, not loose.

4.3.5.6 neutral wire and protection of electrical equipment should separations, various other wire circuit should also be possible separations. Wire color should be consistent the following requirements.

--- For the yellow and green protection wire;

--- Power circuit neutral light blue;

--- AC or DC power circuit wiring is black;

--- AC control circuit wiring is red;

--- DC control circuit wiring is blue;

--- From an external power supply interlock control circuit is orange.

4.3.5.7 in the pipe or electrical wiring box distribution boards as well as between the two terminals should be continuous, not allowed to have an intermediate connector.

4.3.5.8 Application of protective grounding terminal "" symbol or a combination of yellow and green color to mark.

4.3.5.9 components, wires and terminals and practical application of visual inspection.

4.4 Noise

4.4.1 balanced machine noise level shall meet the following requirements.

a) Horizontal hard bearing balancing machine noise level are shown in Table 1;

Table 1 Horizontal hard bearing balancing machine noise level

Maximum rotor mass balancing machine can be balanced kg Noise level dB (A) 1000 supply and demand sides negotiated

b) Horizontal soft bearing balancing machine noise level shown in Table 2;

Table 2 Horizontal soft bearing balancing machine noise level

Maximum rotor mass balancing machine can be balanced kg Noise level dB (A) 300 <=83

c) vertical balancing machine noise level should not exceed 78dB (A);

d) special balance machine noise level by both parties through consultation.

4.4.2 Detection balancing machine noise, you should use check the rotor and the test speed in line with GB/T 4201 regulations, and the balance is in normal Working condition, then the sound level meter microphone for a sound source in a horizontal position from the balancing machine 1.0m, height from the ground 1.5m, about balancing machines Four weeks measuring less than six, the maximum noise level, measurement results for each measurement point measured as the balancing machine should meet 4.4.1 Claim.

When measuring balancing machine noise, you should measure the background (ambient) noise, its value should be more than balanced by the low machine noise level of at least 10dB (A). If the phase is less than 3dB (A), the measurement will be invalid. If a difference of 3dB (A) ~ 10dB (A), sound level meter shall use the test data into the specification Processing.

5.1 General requirements for the use of information

Use of information should generally include the following.

--- In the relevant technical documentation balancing machine should be clearly given detailed usage information to help users correct use and adequate balancing machines Aware of the dangers and risks of balancing machines;

--- Specify the intended use of balancing machines and scope;

--- Tell the user how to safely and correctly use the balancing machine, in order to balance the normal operation of the safety function, give full play to its function, to prevent over Italian dangerous to the operation or damage balancing machine;

--- Warn the user that the residual risk remaining balance machine, allowing users to take appropriate remedial measures, when used, shall guard;

--- Requires the user must according to the instructions, the rational use of balancing machines, and may lead to errant require the use of hazardous or warn of potential risks.

Book GB 22447-2008

5.2 Signs, symbols and text warning

5.2.1 balanced machine signs, symbols and text warnings should meet the following requirements.

--- Logo printed directly on the balancing machine, the symbol should be firm, should be maintained throughout the life of clear and visible.

--- Signs, symbols and text warnings should be easy to understand and unambiguous, priority should be easy to understand the various uses figurative graphical symbols number. When using text warning, words to be concise and precise.

--- The symbol or text warnings can not write only "dangerous" should be used to visualize symbols or graphical representation of hazard or text Simple to prevent the risk of the measures, such as "Be careful of electric shock!" And so on.

5.2.2 marking the electrical equipment shall comply with GB 5226.1-2002 in Chapter 17.

5.2.3 balancing machine identification shall comply with the relevant product standards, its safe use flag were to be depending on the product Provisions.

5.3 User's Guide

Instructions should include the following.

--- Transport, handling and storage of information on the balancing machine (such as size, weight and storage conditions balancing machines, etc.);

--- About balancing machine commissioning delivery information (such as assembly and installation conditions, environmental conditions, etc.);

--- Information about the balancing machine itself [as detailed on the balancing machine and its accessories, protective devices and (or) safety devices, balanced machine all predetermined range of applications, graphs, etc.];

--- Information (such as the settings and adjust the balancing machine balancing machine using the instructions related to the identification of the fault, and then start the repair and adjusting of Description, etc.).