YOKOGAWA AIP591耦合单元卡件
型号和样式编号
型号和样式号描述了特定设备中包含的选项，以及出现在后面板上的标签上。收到DECS-100后，确保检查样式根据请购单和装箱单进行编号，以确保它们一致。
样式号DECS-100电气特性和操作特性由字母和构成样式编号的编号。DECS-100样式编号图如图1-1所示。样式编号示例例如，样式号为A15的DECS-100具有以下特征：操作特性。
A------无无无功或功率因数控制
1------电压匹配
5------5安培电流感应过励磁停机
当过励磁保护功能启用且磁场电压超过10秒可调设定值。当过励磁条件为：检测。DECS-100通电时，过励磁停机LED将点亮5秒在过励磁停机之后。
发电机过电压当发电机输出电压超过可调设定值0.75秒时，该LED点亮。当发电机过电压条件存在，DECS-100输出触点闭合，DECS-100关闭（如果启用了硬件关闭）。在以下情况下，发电机过电压LED将点亮5秒：发电机过压停机后，DECS-100通电。
发电机感应损失
当检测到发电机感应电压丢失时，该LED点亮。当失去传感条件时DECS-100输出触点闭合。根据选择的保护动作，DECS-100将关闭或转换到手动模式。发电机感应指示灯将闪烁5秒
发电机感应停机丢失后DECS-100通电的秒数。过励磁限制当磁场电流超过编程过励磁极限时，该LED点亮。它一直亮着，直到过励磁条件停止或过励磁时间延迟到期，DECS-100关闭。
DECS-100通电后，过励磁限制LED将闪烁5秒过励磁限制停机。
欠励磁限制当感测到的无功功率（超前VAR）低于编程值时，该LED点亮
欠励磁极限。在欠励磁条件停止或欠励磁时间结束之前，该灯一直亮着延迟到期，DECS-100关闭。欠励磁限制LED将闪烁5秒当DECS-100在欠励磁限制停机后通电时。
Var/P.F.模式激活该LED指示灯亮起，表明DECS-100在可选的Var或功率因数模式下运行
控制Var/功率因数控制通过BESTCOMS软件启用，当52J/K触点输入打开。
MODEL AND STYLE NUMBER
The model number, together with the style number, describe the options included in a specific device, and
appear on a label affixed to the rear panel. Upon receipt of a DECS-100, be sure to check the style
number against the requisition and the packing list to ensure that they agree.
Style Number
DECS-100 electrical characteristics and operational features are defined by a combination of letters and
numbers that make up the style number. The DECS-100 style number chart is shown in Figure 1-1.
Style Number Example
For example, a DECS-100 with a style number of A15 would have the following characteristics and
operating features.
A ------- No var or power factor control
1-------- Voltage matching
5-------- 5 ampere current sensing Overexcitation Shutdown
This LED lights when the Overexcitation Protection feature is enabled and the field voltage exceeds the
adjustable setpoint for 10 seconds. The DECS-100 will shutdown when an overexcitation condition is
detected. The Overexcitation Shutdown LED will light for 5 seconds when the DECS-100 is powered up
following an overexcitation shutdown.
Generator Overvoltage
This LED lights when generator output voltage exceeds the adjustable setpoint for 0.75 seconds. When a
generator overvoltage condition exists, the DECS-100 output contacts close and the DECS-100 shuts
down (if hardware shutdown is enabled). The Generator Overvoltage LED will light for 5 seconds when
the DECS-100 is powered up following a generator overvoltage shutdown.
Loss of Generator Sensing
This LED lights when a loss of generator sensing voltage is detected. When a loss of sensing condition
occurs, the DECS-100 output contacts close. Depending on the protective action selected, the DECS-100
will either shutdown or transfer to Manual mode. The Loss of Generator Sensing LED will flash for 5
seconds when the DECS-100 is powered up following a loss of generator sensing shutdown. Overexcitation Limiting
This LED lights when the field current exceeds the programmed overexcitation limit. It stays lit until the
overexcitation condition ceases or the overexcitation time delay expires and the DECS-100 shuts down.
The Overexcitation Limiting LED will flash for 5 seconds when the DECS-100 is powered up following an
overexcitation limiting shutdown.
Underexcitation Limiting
This LED lights when the sensed, reactive power (leading vars) decreases below the programmed
underexcitation limit. It stays lit until the underexcitation condition ceases or the underexcitation time
delay expires and the DECS-100 shuts down. The Underexcitation Limiting LED will flash for 5 seconds
when the DECS-100 is powered up following an underexcitation limiting shutdown.
Var/P.F. Mode Active
This LED lights to indicate that the DECS-100 is operating in the optional Var or Power Factor mode of
control. Var/Power Factor control is enabled through BESTCOMS software and when the 52J/K contact
input is open.
