Schweitzer Engineering Laboratories SEL-351-5, Instruction Manual

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Date Code 20070117
Instruction Manual SEL-351-5, -6, -7 Relay
Date _______________ SET.1
of 34
SEL-351-5, -6, -7 Relay Settings Sheets
Instruction Manual SET
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.24 ] if global settings PTCONN or VSCONN are 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 9.37 )
Relay Identifier (30 characters)
RID =
Terminal Identifier (30 characters)
TID =
Current and Potential Transformer Ratios
(See Settings Explanations on page 9.37 )
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 =
Synchronism Voltage (VS) Potential Transformer Ratio
(1.00–10000.00)
PTRS =
PT Nominal Voltage (line-to-neutral {wye-connected} or line-
to-line {delta-connected})
(OFF, 12.50–150.00 V secondary{150 V voltage inputs})
(OFF, 25.00–300.00 V secondary {300 V voltage inputs})
VNOM =
Line Settings (See Settings Explanations on page 9.37 )
Positive-sequence line impedance magnitude
(0.05–255.00
Ω
secondary {150 V voltage inputs; 5 A nom.})
(0.25–1275.00
Ω
secondary
{150 V voltage inputs; 1 A nom.})
(0.10–510.00
Ω
secondary {300 V voltage inputs; 5 A nom.})
(0.50–2550.00
Ω
secondary
{300 V voltage inputs; 1 A nom.})
Z1MAG =
Positive-sequence line impedance angle (5.00–90.00 degrees) Z1ANG =