Service Life - Siemens 3AH3 Operating Instructions Manual

Service life of vacuum interrupter
The maximum permissible number of mechanical
operating cycles is 10,000. The permissible number of
operating cycles as a function of the breaking current is
shown in Fig.5/2. When this permissible maximum has
been attained, the interrupters or the complete pole
assemblies must be renewed. Detailed instructions are
supplied with the replacement interrupters/pole
assemblies.
When ordering replacement interrupters or pole
assemblies, state the circuit-breaker type, design code
and serial number (see name plate)
Determination of the load characteristic number/ 负载开断特性函数号的确定
Rated voltage Rated short-circuit breaking current
额定电压
kV
7.2
12
15
17.5
24
36
Breaking current I (kA)
Fig.5/2 Permissible number of operating cycle as a function of breaking current Ia
图 5/2 断路器允许开断次数是开断电流 Ia 的函数
Operating Instruction Siemens 3AH3 / 西门子 3AH3 真空断路器使用手册
额定短路电流
kA
50
63
50
63
50
63
50
63
40
50
31.5
40
开断电流 (kA)
/
真空灭弧室运行寿命
断路器最高机械寿命为 10,000 次. 断路器允许操作次
数是开断电流的函数如图.5/2. 当达到最高操作次数
时, 灭弧室或整个极柱装配 必须更换 具体说明随
灭弧室/极柱装配更换件一起提供.
如需定购灭弧室/极柱装配更换件时, 请注明断路器型号,
设计编号和系列号 (见铭牌).
Load characteristic number at rated normal current
额定电流下负载特性曲线号
1250A 2000A
1 -
2 -
1
2
1 -
2 -
3 -
4 -
- -
6 6
5 5
2500A 3150A
1 1
2 2
1 1
2 2
1 1
2 2
3 3
4 4
5 -
3
6 -
5 -
上海锐杰电器有限公司提供
4000A
-
2
-
2
-
2
3
4
-
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