Schweitzer Engineering Laboratories SEL-351A - SEL-351 A-1 Settings Sheets

Date Code 20080213 Instruction Manual SEL-351A-1 Relay
Date _______________ SET.1
of 26
SEL-351A-1 Settings Sheets
Relay Settings (Serial Port Command SET and Front Panel)
SEL-351A-1 Settings Sheets
Relay Settings (Serial Port Command SET and Front
Panel)
To avoid lost settings, enter global settings first [Global Settings (Serial Port Command SET G and
Front Panel) on page SET.15] if global setting PTCONN is going to be changed. Refer to subsection
In Some Applications, Make Global Settings (SET G) First on page 9.1.
Identifier Labels (See Settings Explanations on page 9.34)
Relay Identifier (30 characters)
RID =
Terminal Identifier (30 characters)
TID =
Current and Potential Transformer Ratios
(See Settings Explanations on page 9.34)
Phase (IA, IB, IC) Current Transformer Ratio (1–6000) CTR =
Neutral (IN) Current Transformer Ratio (1–10000)
CTRN =
Phase (VA, VB, VC; wye-connected) or Phase-to-Phase
(VAB, VBC, VCA; delta-connected) Potential Transformer
Ratio (1.00–10000.00)
PTR =
PT Nominal Voltage (line-to-neutral {wye-connected} or line-
to-line {delta-connected}) (OFF, 25.00–300.00 V secondary)
VNOM =
Line Settings (See Settings Explanations on page 9.34)
Positive-sequence line impedance magnitude
(0.10–510.00 Ω secondary {5 A nom.})
(0.50–2550.00 Ω secondary {1 A nom.})
Z1MAG =
Positive-sequence line impedance angle (5.00–90.00 degrees)
Z1ANG =
Zero-sequence line impedance magnitude
(0.10–510.00 Ω secondary {5 A nom.})
(0.50–2550.00 Ω secondary {1 A nom.})
Z0MAG =
Zero-sequence line impedance angle (5.00–90.00 degrees)
Z0ANG =
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