Schweitzer Engineering SEL-351P - Installation with Only 120 Vac Power (Traditional Installation); Front-Panel AC SUPPLY LED; Installation with Separate 120 Vac Power and Three-Phase Voltage

Date Code 990215 Additional Installation Details 2-7
SEL-351P Manual Técnico
DWG: M351P031
R
E
C
L
O
S
E
R
SEL-351P
120 Vac
Power
VSVCVBVA
3
Source Load
Control
Cable
Figure SECTION 2: .4: Installation with Only Three-Phase Voltage (120 Vac power
provided by three-phase voltage)
Installation with Only 120 Vac Power (Traditional Installation)
See
Figure SECTION 2: .1. This is the traditional recloser control installation – only single-
phase 120 Vac power is brought to the SEL-351P. Jumpers from the 120 Vac power to voltage
input VA are installed. Voltage input VA is then in parallel with the incoming 120 Vac power.
Front-Panel AC SUPPLY LED
Voltage input VA provides direct indication of incoming 120 Vac power via the factory-set
front-panel AC SUPPLY LED (SEL
OGIC setting LED11 = 59A1). Voltage element 59A1 picks
up when nominal 120 Vac is applied to voltage input VA (see Figure 3.21).
Installation with Separate 120 Vac Power and Three-Phase Voltage
See
Figure SECTION 2: .2. Jumpers from the 120 Vac power to voltage input VS are installed.
Voltage input VS is then in parallel with the incoming 120 Vac power.
Front-Panel AC SUPPLY LED
Voltage input VS provides direct indication of incoming 120 Vac power via the front-panel AC
SUPPLY LED (SEL
OGIC setting LED11). Make setting change LED11 = 59S1 with the SET L
n command (n = setting group number). Make pickup setting 59S1P = 104 (for voltage element
59S1; 87% of 120 V) with the SET n command (n = setting group number). Voltage element
59S1 picks up when nominal 120 Vac is applied to voltage input VS (see Figure 3.23).