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Tripping - Siemens 3AH3 Operating Instructions Manual

Vacuum circuit breaker 7.2kv 36kv.
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5.
For test operations with the motor mechanism switch on
the supply voltage. The motor will start immediately and
charge the closing spring (62.). check the mechanical
and electrical indication of the charging state of the
closing spring. Actuate the mechanism as indicated
under 4. And check the mechanical and electrical state
indication.
6.
Check the auxiliary switch S1 (68.) and position switches
(50.4.1) electrically in both end positions by actuating the
3AH3 vacuum circuit-breaker.
7.
Also check-by electrical actuation – the function of the
closing solenoid Y9 (53.1) and all fitted shunt release.
When correct functioning of the 3AH3 V-breaker has been
ascertained it can be put into service.
Charging the closing spring
When the supply voltage is applied the motor (50.4)
automatically charges the closing spring (62.). Should
the supply fail the closing spring (62.) can also be charged by
hand crank (50.). In the lattercase, as shown in Fig.4/1,the
hand crank(50.) is inserted with the forwards pushed adapter
(50.6) through the opening (50.1) onto hand crank coupling
(50.5) and turned clockwise, until the symbol "closing spring
discharged" shown in the indicator opening (55.3) is changed
to "closing spring charged" (Fig. 4/2).
Fig.4/1 Charging the closing spring with the hand crank
图 4/1 利用手柄对合闸弹簧储能
The adapter (50.6) is designed so that the hand crank (50.) is
decoupled on the recovery of the motor supply.
Fig.4/2
Closing spring discharged
"合闸弹簧未储能"
Closing
If operation is not blocked by the mechanical interlock, press
the close push-button (53.) or the corresponding control
switch until the 3AH3 vacuum circuit-breaker closes and both
indicates and signals this state.
After closing (and, if applicable, releasing of the close
push-button (53.) the closing spring (62.) is immediately and
automatically recharged the "closing spring charged" (55.)
and indication becomes visible once again.

Tripping

The opening spring (64.) is charged during closing.
To trip the breaker press the open push-button (54.) or
corresponding control switch until the V-breaker trips and
both indicates and signals this state.
Operating Instruction Siemens 3AH3 / 西门子 3AH3 真空断路器使用手册
5.
进行测试时接通马达机构电源, 此时马达立即启动
并对合闸弹簧 (62.) 储能. 检查合闸弹簧在储能状
态时的电气和机械指示. 然后按第 4 点所述操作, 再
检查此状态时的电气及机械指示.
6.
通过操作 3AH3 断路器, 检查辅助开关 S1 (68.) 和 位置开
关 (50.4.1) 在合分位置的电气状态.
7.
通过电气手段检查合闸线圈 Y9 (53.1) 以及所有脱
扣线圈.
当 3AH3 断路器以上功能都得到验证后, 可以投入使用.
合闸弹簧储能
当电源接通后,马达 (50.4) 自动对合闸弹簧 (62.) 储能. 如电源
有故障时, 可通过手柄 (50.) 进行储能. 对于后者,如
图.4/1 所示, 手柄 (50) 的适配头 (50.6) 通过面板开孔 (50.1)
插入手柄耦合杆 (50.5) 顺时针转动, 直到面板开孔 (55.3)上
的标志"合闸弹簧未储能"转换为"合闸弹簧已储能"(图.4/2).
手柄适配头 (50.6) 经专门设计保证在马达电源恢复时
手柄顺利从耦合杆退出.
Fig.4/2
Closing spring charged
"合闸弹簧已储能"
合闸
在机械联锁处于防松状态时, 按"合闸"按钮 (53.)或相应
控制开关使 3AH3 断路器合闸并且面板指示和电气信号
都处于对应状态.
合闸后 ( 合闸 按钮 (53.) 释放后), 合闸弹簧 (62.) 立即自动再
储能, 储能状态指示重新为"合闸弹簧已
储能" (55.).
分闸
分闸弹簧 (64.) 在合闸的过程中被压缩储能.
按"分闸"按钮 (54.) 或相应控制开关使断路器分闸并且
面板指示和电气信号都处于对应状态
.
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