APPLICATION
The main relaying functions chosen for the PRIDE'Unit are targeted at the problem of detecting an
abnormal condition on the distribution circuit, as evidence of isolation, and then tripping the small
generator. However, the flexibility of the PRIDE has been increased as additional features were added.
The M-0290 can now be used in a variety of applications where a multi-function voltsge and frequency
relay is needed.
The relaying provided is listed in Table 1.
Refer to the SPECIFICATIONS f or a
complete description of the adjustment ranges and of the accuracy of each of the relaying flDlctions.
DEVICE
M-0290
FUNCTION
NUMBER
S INGLE-PHASE
Undervoltage
27
X
Overvoltage
59
X
Under Frequency
81U
X
Over Frequency
810
X
Undervoltage Trip Timer
2UV
X
Overvoltage Trip Timer
20V
X
Under Frequency Trip Timer
2UF
X
Over Frequency Trip Timer
20F
X
Reconnect Timer
2Reclose
X
TABLE
1 Relaying Functions
-2-
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