在易燃易爆区域里的环境里,要想用到普通的电器设备,必须外加一个防爆箱,否则就会有安全隐患。
一般是单独外购了一个隔爆的箱子,里面放非防爆设备,比如继电器、断路器、漏电保护器、总开关、浪涌保护器、电加热器。 隔爆箱子可以单独认证exd, 该认证书上 对内置的“非防爆”设备有明确的规定,还有功率、温升的限制,等等,否则整个防爆箱就不符合exd的要求。
只要进出线位置安装上电缆防爆格兰头,才能真正起到防爆箱隔爆,密封的作用,在发生明火时,元件在防爆箱内部引燃火花,不会进一步将火引到防爆箱外部,让环境更安全。
选型表
BDM-I型:适用于非铠装电缆,位移式夹紧
螺纹 规格(G) |
适用电缆 外径 (mm) |
外形尺寸 (mm) |
||||
L |
L1 |
D |
||||
G1/2 |
M20 |
NPT1/2" |
5-12 |
45 |
17 |
27 |
G3/4 |
M25 |
NPT3/4" |
10-18 |
45 |
17 |
33 |
G1" |
M32 |
NPT1" |
16-24 |
54 |
20 |
42 |
G1 1/4" |
M40 |
NPT1/4" |
18-31 |
60 |
20 |
52 |
G1 1/2" |
M50 |
NPT1/2" |
25-38 |
62 |
20 |
60 |
G2" |
M63 |
NPT2" |
30-48 |
65 |
20 |
75 |
G2 1/2" |
M75 |
NPT2 1/2" |
38-63 |
70 |
20 |
94 |
G3" |
M90 |
NPT3" |
50-75 |
70 |
20 |
108 |
G4" |
M100 |
NPT4" |
70-90 |
78 |
22 |
130 |
BDM-II型:适用于非铠装电缆,位移式夹紧
螺纹 规格(G) |
适用电缆 外径 (mm) |
外形尺寸 (mm) |
||||
L |
L1 |
D |
||||
G1/2 |
M20 |
NPT1/2" |
5-12 |
45 |
15 |
27 |
G3/4 |
M25 |
NPT3/4" |
10-18 |
45 |
15 |
33 |
G1" |
M32 |
NPT1" |
16-24 |
53 |
19 |
42 |
G1 1/4" |
M40 |
NPT1/4" |
18-31 |
58 |
19 |
52 |
G1 1/2" |
M50 |
NPT1/2" |
25-38 |
62 |
19 |
60 |
G2" |
M63 |
NPT2" |
30-48 |
65 |
19 |
75 |
G2 1/2" |
M75 |
NPT2 1/2" |
38-63 |
70 |
19 |
94 |
G3" |
M90 |
NPT3" |
50-75 |
70 |
19 |
108 |
G4" |
M100 |
NPT4" |
70-90 |
78 |
20 |
130 |
BDM-III型:适用于非铠装电缆,位移式夹紧
螺纹 规格(G) |
适用电缆 外径 (mm) |
外形尺寸 (mm) |
||||
L |
L1 |
D |
||||
G1/2 |
M20 |
NPT1/2" |
5-12 |
60 |
15 |
27 |
G3/4 |
M25 |
NPT3/4" |
10-18 |
61 |
15 |
33 |
G1" |
M32 |
NPT1" |
16-24 |
73 |
19 |
42 |
G1 1/4" |
M40 |
NPT1/4" |
18-31 |
78 |
19 |
52 |
G1 1/2" |
M50 |
NPT1/2" |
25-38 |
82 |
19 |
60 |
G2" |
M63 |
NPT2" |
30-48 |
86 |
19 |
75 |
G2 1/2" |
M75 |
NPT2 1/2" |
38-63 |
90 |
19 |
94 |
G3" |
M90 |
NPT3" |
50-75 |
90 |
19 |
108 |
G4" |
M100 |
NPT4" |
70-90 |
100 |
20 |
130 |
M20 M25 M32 M40 M50 M63 M75 M90 M100
NPT1/2" NPT3/4" NPT1" NPT1/4" NPT1/2" NPT2"
NPT2 1/2" NPT3" NPT4"
BDM-IV型:适用于非铠装电缆,机械式夹紧
螺纹 规格(G) |
适用电缆 外径 (mm) |
外形尺寸 (mm) |
||||
L |
L1 |
D |
||||
G1/2 |
M20 |
NPT1/2" |
5-12 |
80 |
16 |
30 |
G3/4 |
M25 |
NPT3/4" |
10-18 |
80 |
16 |
35 |
G1" |
M32 |
NPT1" |
16-24 |
85 |
18 |
42 |
G1 1/4" |
M40 |
NPT1/4" |
18-31 |
100 |
19 |
53 |
G1 1/2" |
M50 |
NPT1/2" |
25-38 |
100 |
19 |
62 |
G2" |
M63 |
NPT2" |
30-48 |
100 |
19 |
74 |
G2 1/2" |
M75 |
NPT2 1/2" |
38-63 |
120 |
19 |
90 |
G3" |
M90 |
NPT3" |
50-75 |
120 |
19 |
103 |
G4" |
M100 |
NPT4" |
70-90 |
130 |
20 |
130 |
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