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
h1,2,3 - 1., 2., 3. stage hourconters
L1,2,3 - 1., 2., 3. stage lamps
L4
MB
MV
RT
TA
TB
(A)
D2567
VS
V1,2,3 - 1., 2., 3. stage solenoid valves
KEY TO LAYOUT (C)
F1
F2
F3
KL1 - Line Contact-maker
(B)
D2569
KS1 - Star Contact-maker
20049884 KST1 - Timer relay for switching from
KT1 - Delta Contact-maker
MA
Q1
(C)
53
- Commutator
- Photocell
- Lock-out motor lamp
- Burner terminal strip
- Fan motor
- Thermal relay
- Ignition transformer
- Burner ground (earth)
connection
- Safety solenoid valve
- Power line fuses
- Control devices fuse
- Thermal relay - Factory calibra-
tion at:
P 300 T/G: 10.2 A for 400 V
17.6 A for 230 V
P 450 T/G: 16.7 A for 400 V
29 A for 230 V
star to delta (factory calibration
at 10 s.)
- Starter terminal strip
- Disconnecting switch with
interlock