Date _______________
Date Code 20080213 Instruction Manual SEL-351A-1 Relay
SET.7
of 26
SEL-351A-1 Settings Sheets
Relay Settings (Serial Port Command SET and Front Panel)
Negative-sequence (V2) overvoltage pickup
(OFF, 0.00–120.00 V secondary)
59Q2P =
Positive-sequence (V1) overvoltage pickup
(OFF, 0.00–170.00 V secondary)
59V1P =
Phase-to-phase undervoltage pickup
(OFF, 0.00–300.00 V secondary)
27PP =
Phase-to-phase undervoltage pickup
(OFF, 0.00–300.00 V secondary)
27PP2P =
Phase-to-phase overvoltage pickup
(OFF, 0.00–300.00 V secondary)
59PP =
Phase-to-phase overvoltage pickup
(OFF, 0.00–300.00 V secondary)
59PP2P =
Frequency Element (See Figure 3.30–Figure 3.32)
(Make the following settings if preceding enable setting E81 = 1–3.)
Phase undervoltage block (25.00–300.00 V secondary) 27B81P =
Level 1 pickup (OFF, 40.10–65.00 Hz)
81D1P =
Level 1 time delay (2.00–16000.00 cycles in 0.25-cycle steps)
81D1D =
Level 2 pickup (OFF, 40.10–65.00 Hz)
81D2P =
Level 2 time delay (2.00–16000.00 cycles in 0.25-cycle steps)
81D2D =
Level 3 pickup (OFF, 40.10–65.00 Hz)
81D3P =
Level 3 time delay (2.00–16000.00 cycles in 0.25-cycle steps)
81D3D =
Reclosing Relay (See Table 6.2 and Table 6.3)
(Make the following settings if preceding enable setting E79 = 1–4 or C1–C4.)
Open interval 1 time
(0.00–999999.00 cycles in 0.25-cycle steps)
79OI1 =
Open interval 2 time
(0.00–999999.00 cycles in 0.25-cycle steps)
79OI2 =
Open interval 3 time
(0.00–999999.00 cycles in 0.25-cycle steps)
79OI3 =
Open interval 4 time
(0.00–999999.00 cycles in 0.25-cycle steps)
79OI4 =
Reset time from reclose cycle
(0.00–999999.00 cycles in 0.25-cycle steps)
79RSD =
Reset time from lockout
(0.00–999999.00 cycles in 0.25-cycle steps)
79RSLD =
Reclose supervision time limit
(OFF, 0.00–999999.00 cycles in 0.25-cycle steps) (set
79CLSD = 0.00 for most applications; see Figure 6.2)
79CLSD =
Courtesy of NationalSwitchgear.com
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