This standard specifies the product safety technical requirements and safe use technical requirements for agricultural water pumps and pump units. This standard applies to all types of agricultural water pumps and pump units below 75kV. NY 643-2002 Agricultural Water Pump Safety Technical Requirements NY643-2002 Standard download decompression password: www.bzxz.net

Ics 65,060
Agricultural Industry Standard of the People's Republic of China
NY 643--2002
Safety specifications for agricultural water pumps
Safety specifications for agricultural water purnps2002-12-30 Issued
2003-03-01 Implementation
Issued by the Ministry of Agriculture of the People's Republic of China
This standard is formulated to ensure the safe use of agricultural water pumps. This standard is issued by the Agricultural Mechanization Department of the Ministry of Agriculture and the Agricultural Mechanization Technical Committee of the National Machinery Standardization Committee. NY 643-2002
The author of this standard is the Agricultural Technology Quality Supervision Inspection and Testing Center, Taizhou Feijiu Motor Pump Manufacturing Co., Ltd. The main drafters of this standard are Luo Yangkuan, Zhou Kaihua, Chaxian, Yang Mingjiang, Song Jiu, and Jia Shancheng. 1 Scope
Safety technical requirements for agricultural water pumps
This standard defines the product safety technical requirements and safety technical requirements for agricultural water pumps and units. This standard is applicable to various agricultural water pumps and units with a load of less than 75k. 2 Normative references
NF643-2002
The following documents shall be used as the references of this standard. The references without a lapsed date shall be used in all subsequent revisions (without lapse of the content) or revisions. The latest revisions of the referenced documents shall be used in all cases where the references are out of date. The latest revisions of the referenced documents shall be used in all cases where the references are out of date. GR755-2000 Specifications and Regulations for Rotating Motors
G91-198 Marking and Rotating Direction of Motor Terminals (1/T321G-9R Centrifugal and Mixed Flow Systems, Part 2 Test Methods for Coated and Vortex Systems G359-3.21997 Specifications for Rotating Motors; GH 0959-2000 Rubber Insulated Cables of 450/750V and Below - Part 2 Test Methods 1-18
General rules for product use instructionswww.bzxz.net
GF1391-30 Safety technical requirements for agricultural and forestry push-pull machines and machinery Part I: General rules [339S1999 Forestry machinery and machinery, grass and state power machinery safety signs and hazard signs General rules GB/T133C6-1! Signs
3 Definitions
The following technical specifications and definitions apply to this standard.
Agricultural water
Water for agricultural drainage, including high-pressure pumps, mixed-flow pumps, axial-flow pumps, self-propelled pumps, long-axis deep-well pumps, small-scale water pumps, well-lift submersible pumps, sewage pumps, water pumps, pipe systems, water pumps, etc. 3. 2
Agricultural water pump unit
Small case, machinery composed of variable speed motor and transmission system and main auxiliary equipment, including service water pump, sprayer, motor system, diesel engine-pump unit, oil engine pump unit, etc. 4 Product safety technical requirements
4.1 Grounding device
4.1.1 The grounding device of the distribution motor unit should ensure good electrical connection with the grounding wire without damaging the wire and the motor. There must be a grounding mark on the grounding device. 4.1.2 The water motor should be grounded when it is connected to the ground during power supply. The ground wire should have a clear grounding mark. 4.1.3 Ensure that the grounding mark will not go out during use. 42 Insulation resistance
The insulation resistance of the new motor winding to the standard shall not be lower than the following: The stator of the motor is NY643-2002
The insulation resistance of the motor is not less than 2UM. The thermal insulation resistance is not less than 1M2. Table 1 The insulation resistance of the motor to the machine is not less than 2UM. The thermal insulation resistance is not less than 1M2. Table 1 The insulation resistance of the motor to the machine is not less than 2UM. The thermal insulation resistance is not less than 1M2. .3 Withstand voltage
Material grade
Cold separation
Medium brightness
Heat sensation +
The motor with the same voltage as the rest should be able to withstand the voltage test for 1 min. The test voltage is the effective value of the test voltage with a sinusoidal waveform, 1ECCV for single-phase motors and 1?6U for three-phase motors: 4.4 Power supply connection and external voltage
The power supply connection and external voltage should match the motor voltage and current, and the relay should be in compliance (see 5013.4 for the rated voltage). Y7W medium rubber sleeve electric motor or performance phase electric motor, and take appropriate measures such as clamping to prevent stress, joint damage, corrosion, climate change and other hazards.
4.5 Temperature and
When the pump is working, the maximum temperature should not be exceeded. When the temperature exceeds the temperature, the machine should be stopped for inspection. The temperature of the motor set should comply with the provisions of G755. 4.6 Input current
The motor matched with the system must not exceed 1: times the rated current under the rated voltage, rated power and specified working range.
4.7 Protective device
4.7.1 Moving parts protection
Moving parts should be equipped with protective covers, protective plates and other protective devices: open and close the use of the instructions for correct installation 472 Heat protection
When the high humidity surface that can be touched during operation should be equipped with protective covers and other protective devices. 4.7.3 Structure of protective equipment
Protective equipment should have the mechanical properties required for normal use and be firmly fixed on the machine. The structure of the protective device should comply with the requirements of GB11395.1. i.5.
4. Machine structure
The accessible parts and components should not contain any defects that may cause damage, such as sharp edges. 4.9 Safety warning signs
4.9.1 The markings on the motor terminals should comply with the requirements of GI1!71: 4.9.2 If the rotational force may cause a fault or affect the product performance, the product should be marked in a safe manner:
4.9.3 If the structure and safety protection cannot eliminate the various dangers, there should be safety warning signs at the bottom. Warning signs must comply with GH10, for example, machines powered by automatic engines have a "dangerous pressure" sign and the word "to prevent electric shock, install the machine correctly according to the requirements of the instruction manual": machines powered by internal combustion engines should have a "dangerous pressure" sign and a warning document "When the engine is running, the safety device must not be damaged."
49.4 There should be a general sign with lubricant in a conspicuous position, and a water-filled warning sign should also be fixed on water-filled batteries. 49.5 Ensure that the indicator light will not extinguish during the service life. 4.10 Coupling of pump and engine NY643—2002 4.10.1 There should be a 3mm-5mm gap between the coupling and the motor. 4.10.2 When the pump and the engine are driven by belts, the axes of the engine and the engine should be parallel, and the symmetric center planes of the two pulleys should be 3% and 10% of the center distance. When the center distance is greater than 100mm, the center distance of the pulleys shall not be less than the distance between the two pulleys. 4.10.3 When movable agricultural machinery such as tractors are used in conjunction with pumps, it should be ensured that there is no vibration during operation. 4.11 Instruction manual 4.11.1 The instruction manual provided with the engine should be written in accordance with the provisions of G969.1. 4.11.2 The instruction manual shall contain detailed safety regulations, and the content shall include the corresponding content in Section 6 of this standard.
4.11.3 The specification table or diagram of the matching power transmission pulley or coupling shall be listed in the instruction manual. 5. Safety technical requirements
5.1 Environmental requirements
5.1.1 The water pan of the pump, the content of impurities in the water, the particle size of impurities, and the pH value shall comply with the provisions of the product instruction manual. The water source shall be able to ensure the continuous rotation of the system.
5.1.2 The water source shall be small enough to drive the motor, and the power supply voltage and power rating shall comply with the provisions of the instruction manual. When the power supply is far away from the use site, the conductor used shall ensure that the working voltage of the motor meets the requirements of the instruction manual. 5.2 Installation requirements
5.2.1 The water outlet should be able to withstand the temporary pressure of 1.3.1 according to the requirements of the user manual, and the water inlet should be able to withstand the thickness of 0.1. The water supply route is virtual and there is a need for low-pressure pump outlet. 5.2.2 The water inlet distance from the water surface should not be less than 0.5m523 The height of the low dynamic water surface should not exceed the suction range of the system: and ensure that the highest water surface shall not exceed the pump machine hangar during the rainy season.
5.2.4 When the motor is used as the power, the grounding device marked with the grounding mark on the motor should be connected to the grounding wire or the grounding wire can be connected to the ground. 5.2.5 The electrical end of the motor should be installed by a dedicated person. 5.2.6 The water pump should be vertical in the water and not horizontal. 5.2.7 The diving depth of the system is 3m1 and the minimum is 0.5m (from the inlet), but the water is not fully immersed. 5.3 Inspection of the machine before use
5.3.1 Check whether the direction of rotation is correct
5.3.2 Check whether the safety protection device is installed correctly. 5.3.3 Check whether the lubricating oil in the lubricating oil package meets the requirements of the instruction manual. It is not allowed to start the machine without lubricating oil or insufficient lubricating oil. For water-filled hydrostatic recorders, it is required to fill with water before use. 5.3.4 Check the system components and check whether the circuit wiring is reliable. During the comprehensive inspection, if fluid is found, it should be replaced immediately. Cable replacement should be done by professionals.
5.4 Trial operation
5.4.1 Fill the pumps (except for submersible pumps, self-priming pumps, etc.) with water and drain the air out of the system. 5.4.2 Start the equipment under low power conditions, such as centrifugal pumps, vortex pumps, mud flow pumps, etc., with the valve fully open. When the system reaches the positive belt speed, gradually adjust the gate valve to the rated head. 5.1.3 The operation of the control panel should be smooth and vibration should be small. There should be no abnormal sound. 5.4.4 Check the tightness: There should be no leakage at all points of the water pipe (except for the filling); there should be no paint rain in the lubricating oil. 5.51 Operation 5.5.1 Put the system into use under normal circumstances during the trial operation: 5.5.2 The system is on time. The electric motors of the submersible system are not allowed to be out of the water and sink into the mud to avoid the system being burned due to insufficient heat dissipation: NY643-2002
5.5.3 When the electric system is long, the cables should be laid in the middle. 5.5.4 The power should be cut off when moving and the cables are not allowed to be released to ensure safe operation. 5.5.5 During operation, strengthen the regulation and maintenance, and pay attention to the following aspects: L.) Pay attention to the root movement, noise and current of the unit: When abnormalities occur, the unit should be stopped for inspection. h
Check whether the dripping of the material is normal and whether the pressure of the tower material is loose. The dripping amount of the stuffing box is about 9 drops/n15mL/nabout 30 drops/ain--50 drops/min>
Remove the floating objects in the water inlet pool in time. Check whether there is vortex at the water suction point. Check the water level change of the water inlet pool. If the water inlet filter surface c
drops below the specified low water level: the pump should stop working. 5.6 Maintenance, care and storage
5.6.1 When the environment temperature is lower than 0℃ or it is not in the state for a long time, the water in the cabinet should be drained. 5.6.2 Open the pump, clean and dry the parts, apply the front rust sleeve, reassemble them, and seal the inlet and outlet. 56.3 The pump should be properly stored in a ventilated and dry room, and should not be placed in a place with heat and high temperature. 5.6.4 Replace the engine oil and necessary parts (seal, engine seal, etc.) in the engine cavity according to the instruction manual.
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