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WOODWARD 9907-247擴展驅(qū)動模塊庫存

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WOODWARD 9907-247擴展驅(qū)動模塊庫存

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WOODWARD 9907-247擴展驅(qū)動模塊庫存 WOODWARD 9907-247擴展驅(qū)動模塊庫存 WOODWARD 9907-247擴展驅(qū)動模塊庫存 WOODWARD 9907-247擴展驅(qū)動模塊庫存
手動電壓控制變量：該控制包含在發(fā)電機中配備自動/手動電壓控制選項。在期間使用手動電壓控制模式的發(fā)電機運行選擇器設(shè)置為MAN，發(fā)電機電壓輸出由手動電壓控制變量。為了保持發(fā)電機輸出
在手動電壓控制操作期間處于恒定水平的電壓
模式下，每次發(fā)生以下變化時，調(diào)整手動電壓控制變量發(fā)生負(fù)載（添加或卸載）。領(lǐng)域? 灰化：電壓調(diào)節(jié)器包含內(nèi)部固態(tài)? 埃爾德
? 灰化電路。調(diào)節(jié)器輸入功率至少約為6 Vac終端是操作? 灰化電路。通常激勵器? eld極保持suf? 高效磁性，允許電路運行但是，如果? 如果需要灰化，停止發(fā)電機，然后? 灰燼? eld如下程序所示：
1.連接12或24 Vdc的負(fù)極引線? 灰化源調(diào)節(jié)器端子F-。不要從端子上拆下任何其他導(dǎo)線F-。
2.滑動? 調(diào)節(jié)器上的灰化源端子F+。只有幾秒鐘? 灰化是必要的。
3.滑動? 灰化源正極引出端F+。然后移除這個? 灰化源負(fù)極引線從端子F-，并擰緊航空站
4.啟動發(fā)電機，并檢查電壓是否符合要求。
單機初始運行：當(dāng)發(fā)電機組配備自動/手動電壓控制選項，正常運行
發(fā)電機組為自動電壓控制模式。發(fā)電機運行期間在自動電壓控制模式下設(shè)置運行，發(fā)電機輸出在空載運行期間，通過以下調(diào)整預(yù)先建立電壓：外部電壓調(diào)節(jié)變阻器，并自動保持在從空載到滿載的所有負(fù)載條件下的振幅電壓調(diào)節(jié)器。
自動模式操作：查看之前的調(diào)整和單臺機組操作程序。單臺機組的一般程序
自動模式操作如下程序所示：
1.如果發(fā)電機組配備自動/手動控制選項，將選擇開關(guān)設(shè)置為自動。
2.將電壓調(diào)節(jié)變阻器旋轉(zhuǎn)到一半左右在大逆時針方向和大順時針方向之間位置。
3.打開輸出斷路器。在符合要求之前，不得施加荷載實現(xiàn)空載操作。
4.如果電壓關(guān)閉開關(guān)或? 使用eld斷路器時，閉合將輸入電源連接到電壓調(diào)節(jié)器的開關(guān)。
5.在將并聯(lián)運行的發(fā)電機上，如果機組配備單元/并聯(lián)開關(guān)，關(guān)閉所有開關(guān)
發(fā)電機。
6.啟動原動機并使其達到額定速度。
7.驗證發(fā)電機電壓?？赡艹霈F(xiàn)以下任何情況。
-無電壓累積：如果存在這種情況，勵磁機可能不會有suf? 有效的剩磁。剩磁可能是恢復(fù)? 灰化? eld，如現(xiàn)場閃爍中所述說明書
-過電壓（+15%或以上）：如果出現(xiàn)這種情況，斷開立即關(guān)閉開關(guān)和/或停止原動機。
確定過電壓的原因。欠壓（-15%或更高）：如果出現(xiàn)這種情況，斷開立即關(guān)閉開關(guān)和/或關(guān)閉主電源搬運工。確定欠壓的原因。
-欠頻限制電路操作造成的欠壓
（UFL）：低頻操作造成的欠壓
如果原動機調(diào)速器未調(diào)整到：
保持額定轉(zhuǎn)速或當(dāng)?shù)皖l限流電路
調(diào)整為在非常接近額定值的頻率下運行
發(fā)電機的頻率。
-電壓開始升高，然后崩潰：如果出現(xiàn)這種情況
如果存在，則停止原動機并確定坍塌原因。
如有必要，請參閱故障診斷與排除步驟。
-振蕩電壓（振蕩）：如果出現(xiàn)這種情況，請確保原動機速度不是? 即將畢業(yè)。那么，如果這個條件如果仍然存在，則按照穩(wěn)定性中給出的調(diào)整穩(wěn)定性調(diào)整（R6上面的調(diào)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.