8520-FOP扩展驱动模块库存

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型号：8520-FOP
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8520-FOP扩展驱动模块库存

手动电压控制变量：该控制包含在发电机中配备自动/手动电压控制选项。在期间使用手动电压控制模式的发电机运行选择器设置为MAN，发电机电压输出由手动电压控制变量。为了保持发电机输出
在手动电压控制操作期间处于恒定水平的电压
模式下，每次发生以下变化时，调整手动电压控制变量发生负载（添加或卸载）。领域 灰化：电压调节器包含内部固态 埃尔德
 灰化电路。调节器输入功率至少约为6 Vac终端是操作 灰化电路。通常激励器 eld极保持suf 高效磁性，允许电路运行但是，如果 如果需要灰化，停止发电机，然后 灰烬 eld如下程序所示：
1.连接12或24 Vdc的负极引线 灰化源调节器端子F-。不要从端子上拆下任何其他导线F-。
2.滑动 调节器上的灰化源端子F+。只有几秒钟 灰化是必要的。
3.滑动 灰化源正极引出端F+。然后移除这个 灰化源负极引线从端子F-，并拧紧航空站
4.启动发电机，并检查电压是否符合要求。
单机初始运行：当发电机组配备自动/手动电压控制选项，正常运行
发电机组为自动电压控制模式。发电机运行期间在自动电压控制模式下设置运行，发电机输出在空载运行期间，通过以下调整预先建立电压：外部电压调节变阻器，并自动保持在从空载到满载的所有负载条件下的振幅电压调节器。
自动模式操作：查看之前的调整和单台机组操作程序。单台机组的一般程序
自动模式操作如下程序所示：
1.如果发电机组配备自动/手动控制选项，将选择开关设置为自动。
2.将电压调节变阻器旋转到一半左右在大逆时针方向和大顺时针方向之间位置。
3.打开输出断路器。在符合要求之前，不得施加荷载实现空载操作。
4.如果电压关闭开关或 使用eld断路器时，闭合将输入电源连接到电压调节器的开关。
5.在将并联运行的发电机上，如果机组配备单元/并联开关，关闭所有开关
发电机。
6.启动原动机并使其达到额定速度。
7.验证发电机电压。可能出现以下任何情况。
-无电压累积：如果存在这种情况，励磁机可能不会有suf 有效的剩磁。剩磁可能是恢复 灰化 eld，如现场闪烁中所述说明书
-过电压（+15%或以上）：如果出现这种情况，断开立即关闭开关和/或停止原动机。
确定过电压的原因。欠压（-15%或更高）：如果出现这种情况，断开立即关闭开关和/或关闭主电源搬运工。确定欠压的原因。
-欠频限制电路操作造成的欠压
（UFL）：低频操作造成的欠压
如果原动机调速器未调整到：
保持额定转速或当低频限流电路
调整为在非常接近额定值的频率下运行
发电机的频率。
-电压开始升高，然后崩溃：如果出现这种情况
如果存在，则停止原动机并确定坍塌原因。
如有必要，请参阅故障诊断与排除步骤。
-振荡电压（振荡）：如果出现这种情况，请确保原动机速度不是 即将毕业。那么，如果这个条件如果仍然存在，则按照稳定性中给出的调整稳定性调整（R6上面的调整部分。Manual voltage control variac: This control is included in generators
equipped with the automatic/manual voltage control option. During
generator operation using the manual voltage control mode, the mode
selector is set to MAN and generator voltage output is controlled by the
manual voltage control variac. In order to maintain generator output
voltage at a constant level during operation in the manual voltage control
mode, adjust the manual voltage control variac each time a change in
load occurs (either added or shed).Field  ashing: The voltage regulator contains an internal solid state  eld
 ashing circuit. A minimum of about 6 Vac at the regulator input power
terminals is required for operation of the  ashing circuit. Usually the
exciter  eld poles retain suf cient magnetism to allow circuit operation
and generator voltage buildup However, if  ashing is required, stop the
generator, and then  ash the  eld as given in the procedure that follows:
1. Connect the negative lead of a 12 or 24 Vdc  ashing source onto
regulator terminal F-. Do not remove any other wires from terminal
F-.
2. Slide the positive lead of the  ashing source onto the regulator
terminal F+. Only a few seconds  ashing should be necessary.
3. Slide the  ashing source positive lead off terminal F+. Then remove
the  ashing source negative lead from terminal F-, and tighten the
terminal.
4. Start the generator, and check for satisfactory voltage buildup.
Single unit initial operation: When the generator set is equipped with
the automatic/manual voltage control option, normal operation of the
generator set is the automatic voltage control mode. During generator
set operation in the automatic voltage control mode, generator output
voltage is pre-established during no-load operation by adjustment of
the external voltage adjust rheostat and automatically maintained at the
amplitude under all load conditions from no-load to full rated load by the
voltage regulator.
Automatic mode operation: Review the preceding adjustment and
single unit operation procedures. The general procedure for single unit
automatic mode operation is as given in the procedure that follows:
1. If the generator set is equipped with the auto/manual control option,
set the selector switch to AUTO.
2. Turn the voltage adjust rheostat to about one-half of the way
between the maximum counterclockwise and maximum clockwise
positions.
3. Open the output circuit breaker. Do not apply load until satisfactory
no-load operation is attained.
4. If a voltage shutdown switch or  eld circuit breaker is used, close
the switch to connect input power to the voltage regulator.
5. On generators that will be operated parallel and if the sets are
equipped with unit/parallel switches, close the switch on all
generators.
6. Start the prime mover and bring up to rated speed.
7. Verify generator voltage. Any of the following conditions can occur.
- No voltage buildup: If this condition exists, the exciter may not
have suf cient residual magnetism. Residual magnetism may be
restored by  ashing the  eld as described in the Field Flashing
instructions.
- Overvoltage (+15% or more): If this condition occurs, open
the shutdown switch immediately and/or stop the prime mover.
Determine the cause of overvoltage. Undervoltage (-15% or more): If this condition occurs, open
the shutdown switch immediately and/or shut down the prime
mover. Determine the cause of undervoltage.
- Undervoltage by operation of the underfrequency limit circuit
(UFL): Undervoltage by operation of the underfrequency
circuit can occur if the prime mover governor is not adjusted to
maintain rated speed or when the underfrequency limit circuit is
adjusted to operate at a frequency that is very close to the rated
frequency of the generator.
- Voltage begins to build up and then collapses: If this condition
exists, stop the prime mover and determine the cause of collapse.
If necessary refer to troubleshooting procedure.
- Oscillating voltage (hunting): If this condition occurs, be sure
prime mover speed is not  uctuating. Then, if this condition
persists, adjust the stability adjust (R6) as given in the stability
adjustment section above.