Electrical System; Electrical System Factory-Set - Riello P 140 T/G Installation, Use And Maintenance Instructions

4. ELECTRICAL SYSTEM

4.1 ELECTRICAL SYSTEM FACTORY-SET

P 140 - 200 - 300 T/G DIRECT MOTOR STARTING
P 300 - 450 T/G STAR-DELTA MOTOR STARTING
STAR-DELTA STARTER
KEY TO LAYOUTS (A) - (B)
CMV - Motor contactor
CO
FR
F1
h1,2,3 - 1., 2., 3. stage hourconters
L1,2,3 - 1., 2., 3. stage lamps
L4
MB
MV
RT
(A)
TA
TB
VS
V1,2,3 - 1., 2., 3. stage solenoid valves
KEY TO LAYOUT (C)
F
F1 - Control devices fuse
MA - Starter terminal strip
K1 - Line Contact-maker
K2 - Star Contact-maker
K3 - Delta Contact-maker
K4 - Timer relay for switching from star
(B)
RT - Thermal relay - Factory calibration
SB - Disconnecting switch with
(C)
7
- Commutator
- Photocell
- Protection against radio
interference
- Lock-out motor lamp
- Burner terminal strip
- Fan motor
- Thermal relay
- Ignition transformer
- Burner ground (earth)
connection
- Safety solenoid valve
- Power line fuses
to delta (factory calibration at
10 s.)
at:
P 300 T/G: 9 A for 400 V
18 A for 230 V
P 450 T/G: 14 A for 400 V
24 A for 230 V
interlock