Siemens 3TM 사용 설명서 - 페이지 31

{카테고리_이름} Siemens 3TM에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Siemens 3TM 48 페이지. 1-pole vacuum contactor 4.15 kv - 6.9 kv

페이지 인쇄

1. Circuit Diagrams

Fig. 30

Terminals of the electronic controller

9229 0098 176 0-

2019-01-09

•

without exceeding the permissible connector cross-sections

•

under consideration of the potential voltage drops due to long cables

•

with cables routed in an S configuration

•

using suitable fastening elements to secure the cables

If long cables are necessary for control circuits, malfunctions can occur on closing

or opening under certain conditions. The maximum allowable single cable length l

can be calculated based on the following formula:

U S

Rated supply voltage in V

R SL

Ohmic resistance per conductor and km of control cable in Ω/km

u SL

Voltage drop along control cable in %

S close , P close Contactor inrush current in VA/W

cos ϕ close Power factor of contactor solenoid on closing

for direct current

for alternating current

Connector for release voltage E1/E2 of latching

Connector for supply voltage A1/A2

Electronic controller

Cover of the electronic controller

5 · U

· u

(in m)

· P

zul

ein

5 · U

· u

(in m)

· S

· cosφ

zul

ein

Fig. 31

Optimum cable routing and securing

Installation

all