| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize and economize a multichannel meter relay having plural meter relays for common use, and to enhance reliability of its operation. SOLUTION: This multichannel meter relay is equipped with a scan relay 1 provided correspondingly to channels with a set of measuring contacts S1-1, S1-2,...Sn-1, Sn-2 to be connected to measuring points and operation confirming contacts S1, S2,...Sn, voltage dividing circuits formed by plural resistors R, an AD converter 3 to covert a voltage divided through a position confirming contact and the measurement value measured at the measuring point through the measuring contact to a digital signal by inputting them, and a control processing part 2 to determine whether or not the voltage divided through the operation confirming contact is in accordance with an normal operating order and to determine whether or not the measured value measured through the measuring contact is normal, by applying ON-OFF control to the measuring contact, after applying ON-OFF control to the operation confirming contact of the scan relay 1 so as to correspond to the channel one by one.
|
