This standard specifies the climate protection type and environmental conditions, technical requirements, test methods, acceptance rules, marking, packaging and storage of tropical low-voltage electrical appliances. Matters not specified in this standard shall comply with the provisions of the corresponding ordinary low-voltage electrical appliance standards. This standard applies to tropical low-voltage electrical appliances. JB/T 834-1999 Technical requirements for tropical low-voltage electrical appliances JB/T834-1999 Standard download decompression password: www.bzxz.net

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Pressing Machinery Ring Industry Standard JB/T8341999
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This standard is a revision of B834--85 "Technical Requirements for Hot Recommended Low-Voltage Electrical Appliances". The technical content of the revised JB/T834--1999 is consistent with JB834-85. According to the requirements of GB/T1.1-1993.GB/T1.3-1997, pre-education and citation standards have been added, and appropriate adjustments have been made to academic standards and writing formats. This standard will replace JB834-85 starting from the implementation of II. This standard is proposed and administered by Guangzhou Electrical Equipment Research Institute. This standard is sponsored by Guangzhou Electrical Equipment Research Institute, Shanghai Electrical Equipment Research Institute, and Tianjin Electrical Equipment Research Institute. The main drafters of this standard are: Wu Yizhou, Wei Zhuyun, Zhao Sijie, Yameiyun, Guo Hongfang. This standard is entrusted to Guangzhou Electrical Equipment. Keqing Research Institute is responsible for explaining: 1
1 scope
G20P xEe/
Portuguese
JB/T8341999
JB83485
this standard It stipulates the climate protection types and usage environmental conditions, technical requirements, test methods, acceptance test marks, packaging and storage recommendations for tropical plastic low-voltage electrical appliances. What is not specified in this standard shall comply with the provisions of the corresponding ordinary low-voltage electrical appliance standards. This standard applies to dielectric zone type low-voltage electrical appliances. 2 Reference standards
The provisions contained in the following standards constitute provisions of this standard before they are cited in this standard. At the time of standard comparison, all adopted versions are valid and all standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 2423.4---1993
GB/T2423.16--1990
GB/T2423.17—1993
GB/T 4942.2—1993
GB /T 13126—1991
Basic Environmental Testing Procedures for Electrical and Electronic Products Test Db: Alternating Heat Protection Test Method (eqvIEC60068--2-30: 1980. and 1985 amendments) Basic Environmental Testing Procedures for Electrical and Electronic Products Test J ：Long-term test method (eqvIEC60068---2---10:1988)
Basic environmental test procedures for electrical and electronic products Test Ka: Salt test method (eqvIEC60068--2-l:1981)| |tt||Teardown resistance level of low-voltage electrical appliance enclosures
General technical conditions for tropical protective packaging of machinery industry products GB/T 14048.1---1993
JB/T4159-1999
Low-voltage switchgear General principles for and control equipment (egYEC60947-1:1988) General technical conditions for tropical electrical products
3 Types of climate protection and environmental conditions of use
3.1 The protection types of tropical low-voltage electrical appliances are divided into: a) Humid tropical zone Type "TH\;
b) Tropical type "TA\;
), moist heat plastic "LE"
3.2 The operating environmental conditions of tropical type low-voltage electrical appliances are shown in Table 1 . 1999-08-06
2000-01-01
1
serial number
1
3
.4.||tt ||s
6
2
Air temperature
Cable range versus humidity
%
Climate protection type||tt| |Environmental parameters
sea
dial
ma
year's best
year's lowest
annual average
monthly average The most painful (hottest month)
Guopingma
Maximum sun source difference
JB/T8341999
Table!
Wet tropical type
TH
Below 3000
40
5
25
35
35
The most mixed month, the average maximum relative degree of confusion
The driest month, the average minimum relative humidity| | tt | It is settled by the supply and demand parties. 2) Refers to the monthly average minimum temperature of the month being 25℃. 3) Refers to the monthly average maximum temperature of the month being 40%. 4) Special considerations are required when ordering.
4 requirements
4.1 Humid tropical low-voltage electrical appliances
Non-tropical type
TA
1000 and below
501:||tt ||- 5
30
45
40
30
10 (40 hours)
)
Yes
Yes
Dry, lake heat type
1000 and below
50
-
30
45|| tt||40
30
95 (25 hours) 2
10 (40 hours))
xiang
yes
yes
4.1.1 The heating temperature rise limits of the contacts, soft connections, conductive screws and insulated coils of all levels of humid tropical low-voltage electrical appliances shall not exceed the current standards of the corresponding ordinary low-voltage electrical appliances,
4.1.2 The setting temperature of the bimetal thermal protection device of humid tropical low-voltage electrical appliances is set according to the object to be protected. 4.1.2.1 Protect the motor at 40℃.
4.1.2.2 Protect wires and cables at 35℃.
Note: If the registered customer has special requirements, they should be discussed with the manufacturer when ordering. 4.1.3 Humid tropical low-voltage electrical appliances should have certain moisture resistance, that is, the products should meet the following requirements after passing the alternating condensation heat test in 5.1 of this standard.
4.1.3.1 The insulation resistance of the product should comply with the requirements in Table 2. Table 2
Determined voltage U
V
U.560
60≤660
660U≤800
800
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