ABB GDC806A0101 3BHE028761R0101模块
这允许PQM需求周期与公用事业计量表同步。公用事业使用的计费参数之一是峰值需求。通过将PQM与公用事业计量表同步，PQM可以监控公用事业计量仪读取的需求水平，并执行减负荷以防止需求达到惩罚水平。公用电仪表提供一个干触点输出，可连接到PQM开关输入之一。当PQM检测到触点闭合时，它开始新的需求周期（仅限块间隔需求计算）。•设置点访问：访问终端必须短接在一起，以便面板键盘能够存储新的设置点。通常，接入终端连接到安全密钥开关，以仅允许授权接入
This allows the PQM demand period to be synchronized with the utility meter. One of the billing parameters used by a utility is peak demand. By synchronizing the PQM to the utility meter, the PQM can monitor the demand level read by the utility meter and perform load shedding to prevent the demand from reaching the penalty level. The utility meter provides a dry contact output which can be connected to one of the PQM switch inputs. When the PQM senses a contact closure, it starts a new demand period (with Block Interval Demand calculation only). • SETPOINT ACCESS: The access terminals must be shorted together in order for the faceplate keypad to have the ability to store new setpoints. Typically the access terminals are connected to a security keyswitch to allow authorized access only
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