JB/T 5244-2001 This standard is a revision of JB/T 5211-1991 "Solenoid for Hydraulic Valve". The revised standard has changes in technical content. This standard specifies the general basic requirements for electromagnets, including characteristics, normal working conditions and installation conditions, structure, performance requirements, and test methods and inspection rules to verify that electromagnets meet these requirements. This standard is applicable to control circuits with single-phase AC 50Hz, 60Hz, voltage up to 380V or single-phase bridge full-wave rectification (without small wave device) DC voltage up to 220V, used for solenoid valve control of some switch-type hydraulic valves. electromagnet. This standard does not apply to electromagnets for proportional valves. This standard was first published in 1991 and this is the first revision. JB/T 5244-2001 Electromagnet for hydraulic valve JB/T5244-2001 Standard download and decompression password: www.bzxz.net

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J51
JB
Mechanical Industry Standard of the People's Republic of China
JB/T5244-2001
Solenoid for Hydraulic Valve||tt| |Solenoid
Released on 2001-03-29
China Machinery Industry Federation
Released
Implemented on 2001-07-01
JB/T5244—2001
Foreword
This standard is a revision of JB/T5244-1991 "Solenoid for Hydraulic Valve". This standard is based on the requirements of GB/T14048.1-1993. The technical changes to JB/T5244-1999 mainly include the following three aspects. 1. Increased the aging resistance of rubber seals. 2. Modifications have been made to the noise of AC electromagnets, the minimum shell protection level of the electromagnet, the minimum insulation resistance value after the humidity and heat resistance performance test, the impulse withstand voltage value, and the periodic test rules. 3. According to the continuous development of the market economy, the upgrading of products and the reflection of actual use by new and old customers, the scope of use of DC voltage has been expanded, and the relevant signs on the excitation coil have been deleted: the wet electromagnet temperature rise correction coefficient has been added. K, pulse oil pressure test is adjusted from type test to special test item.
This standard will replace JB/T5244-1991 from the date of implementation. This standard is proposed and managed by Chengdu Machine Tool and Electrical Equipment Research Institute. This standard was drafted by: Wuxi Mingda Electric Co., Ltd., Jiangsu Province. The main drafter of this standard: Zhong Xiafu.
This standard was first released in June 1991, and this is the first revision. 1 Scope
Machinery Industry Standard of the People's Republic of China
Solenoid for Hydraulic Valve
Solenoid
JB/T5244—2001
Replaces JB/T5244-1991
This standard specifies the general basic requirements for electromagnets, including characteristics, normal working and installation conditions, structure, performance requirements, and test methods and inspection rules to verify that electromagnets meet these requirements. This standard is applicable to switch-type hydraulic valves used for solenoid valve control in control circuits with single-phase AC 50Hz, 60Hz, voltage up to 380V or single-phase bridge full-wave rectification (without filtering device) DC voltage up to 220V. Magnet (hereinafter referred to as electromagnet). This standard does not apply to electromagnets for proportional valves. 2 Referenced standards
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB/T 2423.4—1993
GB/T2828—1987
GB/T2900.18—1992
GB/T 4207—1984
GB/T 4942.2— 1993 | | tt | Table (applicable to inspection of continuous batches) Electrical terminology for low-voltage electrical appliances
Determination method of tracking index and tracking resistance index of solid insulating materials under humid conditions. Protection grade of low-voltage electrical appliance enclosures
General principles of low-voltage switchgear and control equipment
According to GB/T2900.18, with the following additions
3.1 Definition
3.1.1 Solenoid for wet valves
It is a single During the stroke of the electromagnet, the pressure oil is allowed to flow into the guide sleeve of the electromagnet. When the line diagram is energized, electromagnetic force is relied upon to pull the armature from the starting (open) position to the closed (holding) position. When the coil loses power, the street iron is pushed to its original starting position by relying on the reset force of the valve.
3.1.2 Dry type wide-use electromagnet
It is a single-stroke electromagnet, and pressure oil is not allowed to flow into the magnetic circuit, coil and other parts. When the coil is energized, electromagnetic force is used to pull the armature from the starting (open) position to the closed (holding) position. When the coil loses power, the armature is pushed to its original starting position by relying on the valve's reset force.
3.1.3 Solenoid for AC rectifier valve
Solenoid for single-stroke DC valve with its own rectifier device. China Machinery Industry Federation approved 2001-07-01 implementation on 2001-03-29
3.1.4 full stroke
JB/T5244—2001
The armature moves in the electromagnet guide sleeve the maximum displacement. 3.1.5 Stroke
The street iron can ensure the effective displacement of the electromagnet output force characteristics from the stroke starting position to the closed position. 3.1.6 The starting position of the stroke
is the position where the armature starts its stroke, which can ensure the output force characteristics of the electromagnet. 3.1.7 The closed position calculation of the stroke
is the position after the armature is reliably attracted due to the effect of electromagnetic force. 3.1.8 Suction force
According to the stroke direction, the effective force output by the electromagnet after overcoming the internal friction force. For AC electromagnets, it refers to the average value of periodic pulsating suction force.
3.1.9 Holding force
The effective force output by the electromagnet when the iron is in the holding position after the excitation coil is energized. For AC electromagnets, it refers to the minimum value of periodic pulsating suction force.
3.1.10 Residual magnetic force
The remaining holding force of the electromagnet when the armature is in the holding position after the excitation coil is powered off. 3.2 Symbol
U.
Rated working voltage;
U——rated insulation voltage;
U-
One excitation coil terminal voltage;|| tt||—Rated operating current:
U
Phase-to-ground voltage:
-Alternating heat and humidity test;
Db
CTI-||tt ||R.
Comparative tracking index:
Thermal DC resistance value of the electromagnet excitation coil at the maximum allowable air temperature; Thermal operating current of the electromagnet: ||tt ||P.-The maximum value of test oil pressure.
4 categories
4.1 type
The electromagnet is an armored solenoid type with a protective shell and no reset device. 4.2 Classification
4.2.1 According to the power supply form, it is divided into
a) Electromagnet for DC valve;
b) Electromagnet for AC valve:
c) AC version Solenoid for integral valve.
4.2.2 According to the structure type, it is divided into
2
a) electromagnet for wet solution;
b) electromagnet for in-type valve.
4.3 model and meaning
M
JB/T5244—2001
Derived code
With signal light; without "x", without signal light and plug Seat, without "c" means wet type without plug seat, without "Y\ means dry type
Rated suction (N)
Design serial number
Power supply code: J-AC ; Z-DC; B-AC This integer reading uses
electromagnet
4.4 The main parameter of the electromagnet is the rated suction force under the rated stroke. Its main parameters are shown in Table 1. Rated stroke. Rated suction under
Equipped with valve diameter
mm
4. 5, 6
10
Determined stroke
mm
2.8,3,5
3.6. 4, 6.7
AC
15-30
40~55
Rated suction power N | |tt | ||5.1 Control voltage level
a) DC: 12,24, 110,220V.
b) AC, 50Hz: 110,220,380V
5.2 rated T. Made ||tt ||According to GB/T14048.1-1993 5.3.4.1. 5.3 Control power supply voltage
The fluctuation range of the electromagnet control power supply voltage is 85%~110%. 6 Normal working conditions and installation conditions||tt| |6.1 Normal working conditions
6.1.1 Weekly air temperature
According to 6.1.1 in GB/T14048.1-1993. 6.1.2 Altitude
According to GB/T14048. 6.1.2 in 11993.
6.1.3 Atmospheric conditions
6.1.3.1 Humidity
According to 6.1.3.1 in GB/T14048.1-1993. 6.1.3.2 Pollution level
The pollution level of the electromagnet is "pollution level 2". JB/T5244—2001
The electromagnet should work in a medium without explosion hazard, and there should be no gas and dust (including conductive dust) in the medium that is sufficient to corrode metal and destroy insulation.
The electromagnet should work in a place where there is no rain or snow. 6.2 Installation conditions
6.2.1 Overall dimensions and installation dimensions
The overall dimensions and installation dimensions of the electromagnet should be clearly specified in its overall product standards. 6.2.2 Installation Category
The installation category of the electromagnet is "Installation Category II" 7 Structural and Performance Requirements
7.1 Structural Requirements
7.1.1 Aging Resistance Performance
The rubber sealing ring should have aging resistance. 7.1.2 Resistance to damp heat
7.1.2.1 Electromagnets should have the ability to adapt to hot and humid environments. Unless otherwise specified in specific product standards, they should be conducted in accordance with the Db: alternating damp heat test method in GB/T2423.41993. The severity level of the test is a maximum temperature of 40°C, and the test period is 6 days. 7.1.2.2 Measure in the last 1 to 2 hours of the low temperature and high humidity stage. At this time, the temperature in the test box (room) is 25°C ± 3°C. The relative humidity should be controlled within the range of 95% to 98% to avoid condensation on the product. Exposure occurs and affects the test results. First measure the insulation resistance, its value should not be lower than the value listed in Table 2, and then conduct a 1-minute power frequency withstand voltage test, but the test voltage is 80% of the value specified in Table 6. Table 2 Minimum value of insulation resistance
Precision insulation voltage U
Minimum value of insulation resistance
v
Mo
7.1.3 Assembly of electromagnet Quality
After the electromagnet is assembled, the armature should be able to slide flexibly. 7.1.4 Parts requirements
≤60
0.5
>60 ~660
-
Electromagnets are made of all non-corrosion-resistant ferrous metals Parts, except the working pole surface and friction parts of the magnetic system, must be protected against rust. The working pole surface of the magnetic system should be clean and coated with anti-rust grease. Plastic parts should be smooth and without cracks, and the lead wires should be free of cracks and breaks. 7.1.5 Electrical clearance
The minimum electrical clearance value of the electromagnet is shown in Table 3. Table 3 Minimum electrical clearance
Phase-to-ground voltage DC average U
Minimum electrical gap
mm
100
0.2
> 100-150
0.5
>150-300
.5
>300-600
3.0
7.1.6 Creepage Distance
JB/T5244-2001
The minimum creepage distance of the electromagnet should comply with the requirements in Table 4. Table 4: Minimum creepage distance
rated insulation voltage U,
V
563
>63-125
>125-250||tt ||>250~400
1
0.63
0.75
1.25
2
Creepage distance quotient
mm
Material group
0.9
1.05
1.8
2.8
ab
1.25
1.5
2.5
4
Regarding the division of insulating material groups, they can be divided into four groups according to their comparative tracking index (CTI) values: Insulating material group Category 1: CTI≥600;
Insulation material group II: 600>CTI≥400 Insulation material group IIIa: 400>CTI>175; Insulation material group IIIb: 175>CTI≥100. 7.1.7 Shell protection level
The minimum protection level of the solenoid shell is IP54. 7.1.8 Lead wire
The power lead of the excitation coil of the electromagnet can be a lead wire (the grounding device is on the valve body) or a plug socket. form. 7.1.8.1 The lead wires of the electromagnet excitation coil should have sufficient mechanical strength, and each lead wire can bear the load force of the electromagnet's own weight without causing harmful damage.
7.1.8.2 The connection dimensions of the plug socket of the electromagnet should comply with the requirements in Figure 1. The protective grounding piece should have an obvious grounding mark, and the grounding piece and the shell should be connected reliably.
7.1.8.3 The rectifier device of the AC inverter electromagnet should be wired as shown in Figure 2. The rectifier component placement position: the electromagnet with non-plastic housing is placed on the body; the electromagnet with plastic housing is placed on the socket Inside. There should be an obvious sign with a rectifier on the socket, and the auxiliary contact piece "3" and the contact piece "" (or "2") should be connected with wires in the socket. 18±0.10
+
a) Location and marking of pins and grounding lug
12±8.18
19_0.48
01'0*8'
b) Pin size
JB/T5244-2001
Picture! Plug socket connection size
Figure 2 rectifier device wiring diagram
6.3±0.15
AA
c) Grounding piece size
Home
7.1.8.4 There must be protective components at the contact pads "1\ and "2" to prevent surge voltage from damaging the diode. 7.2 Performance requirements
7.2.1 Dielectric properties
500F80
7.2.1.1 When the electrical gap of the electromagnet is less than the value in Table 3, the impulse withstand voltage test must be carried out, and the impulse withstand voltage value should comply with the requirements of Table 5
The phase-to-ground voltage and impulse withstand voltage values ??in Table 5. The corresponding relationship is the DC average value of the phase-to-ground voltage
50
>50~100
>100150
>150~300
>300-600| |tt||Installation category II
Impact withstand voltage value
330
500
800
1500
2500||tt| |V
Note: The impulse withstand voltage values ??listed in the table are test values ??at an altitude of 2000m. If the pulse withstand voltage test is not conducted at an altitude of 2000m, the peak value of the pulse radiation voltage must be multiplied by Correction coefficient, its value is in accordance with the provisions of Table 24 in GB/T14048.1-1993. 7.2.
JB/T5244-2001
The electromagnet should be able to withstand the test voltage value 1m listed in Table 6. Power frequency withstand voltage test without breakdown or flashover. Table 6 Test voltage value of power frequency withstand voltage
Rated insulation voltage U
≤60
>60~300
>300-600
7.2.2 Residual magnetism
The residual magnetism of the electromagnet should not be greater than 18% of the rated suction force. 7.2.3 Temperature rise
According to GB. /T14048.11993 7.2.2.6. 7.2.4 Suction force
Power frequency withstand voltage test voltage AC effective value
1000
2000
2500
V | Rated suction power specified in the standard. 7.2.5 Oil pressure resistance
The guide sleeve of the wet electromagnet should be able to reliably withstand oil pressure of no less than 10MPa for a long time, and there should be no abnormal phenomena such as external leakage and damage to parts. . The value of the guide bush to withstand oil pressure should be specified in the specific product standards. 7.2.6 Low temperature resistance
The electromagnet should be suitable for transportation and storage in low temperature environments, and should be able to withstand the low temperature storage test of -25C. After the temperature of the test sample reaches stability, the low-temperature test must be continued for 16 hours. After the test, the plastic paint parts and lead wires must not be bulged or cracked. 7.2.7 Top piece hardness
The hardness of the top piece of AC electromagnet should not be less than 38HRC. 7.2.8 Noise
The AC electromagnet is in the normal working position, with the rated load applied, the excitation coil voltage is the rated value, and the noise of the magnetic system is measured after the armature is closed normally. The noise (A sound power level) value shall not exceed 60dB ( A). 7.2.9 Mechanical life
The mechanical life of the electromagnet should not be less than the number of pull-ins and releases listed in Table 7. Table 7 Classification of mechanical life
Electromagnet type
AC dry type
DC dry type
Integrated type
AC wet type| |tt||DC wet type
AC wet type
7.2.10
Pulse hydraulic life
Number of machine recovery life
60 × 10
6×10
6×10
10 test, then the pulse p. The value should not be less than 10MPa (with 7
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