R-Tech INV160 Guía de instalación descargar pdf (Pagina 88)

C-28

Electrical diagrams

3 sources with only 1 device closed: electrical interlocking without lockout after a fault

DB101741

Legends

QS... “Source”

Masterpact NW

MCH spring-charging

motor

MX standard opening voltage release

XF standard

closing voltage release

OF... breaker

ON/OFF indication contact

PF “ready-to-close”

contact

CE... “connected-position”

indication contact (carriage switch)

CH “springs charged” indication contact

auxiliary power supply circuit breaker

t1 order

for transfer to “Source 1”

(QS1 closing time delay = 0.25 sec. minimum)

t2 order for transfer to “Source 2”

(QS2

closing time delay = 0.25 sec. minimum)

t3 order

for transfer to “Source 3”

(QS3 closing time delay = 0.25 sec. minimum)

States permitted by mechanical interlocking system

Source 1 Source 2 Source 3

0 0 0

1 0 0

0 1 0

0 0 1

Note:

diagram shown with circuit breakers in connected position, open,

charged, and ready to close.

Auxiliary power supply = supply voltage of auxiliary relays (KA...)

= supply voltage of electrical auxiliaries (electrical operation,

MCH, MX, MN...).

Remote-operated

source-changeover systems

3 Masterpact NW devices

Diagram no. 51156910

Livre 1.indb 28 08/10/2008 18:40:04

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R-Tech INV160 Guía de instalación Pagina 88

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