Hitachi RAF-25NH4 Données Techniques page 179

RAM-70QH4, RAM-80QH4
1. POWER SUPPLY CIRCUIT
The power supply circuit consists of the circuit (A cycle) corresponds to the indoor units 1 and 2, and the circuit (B cycle)
corresponds to the indoor units 3 and 4.
DIODE STACK A
POWER SUPPLY
CABLE 230V 50/60Hz
SURGE
BLK
L
ABSORBER
VARISTOR 2
WHT
N
GRN 3
GRN 1
GRN 2
CONTROLP.W.B.
This circuit works as follows and gets DC voltage: at first, all-wave rectifying 230 x 2 = 325[V] from AC 230V supplied L:N
●
terminals, then, boosting proper DC voltage by the chopper circuit.
hile the compressor running, the DC voltage turns out approx. 320V-360V.
But
REACTOR A
YEL
L 1 L 2
GRY
BLU
YEL
RED
CN14
CN14A (GRY) CN13A (WHT)
25A FUSE C001 NF COIL 1
VARISTOR 1
C002
L002
L004
L006
SYSTEM POWER
YEL
MODULE A
SMOOTHING
CAPACITOR
330µF x 3
REACTOR C
CN13 CN11
CN11A (GRY)
C010
POWER RELAY A
R002
INRUSH
PROTECTIVE
RELAY A
CT - A
C011
C301A
VARISTOR 3
R004
L005
DB 1
C013
CT - B
C014
TO CURRENT
DETECTION
CIRCUIT IN
CONTROL
C301B
P.W.B.
Fig.1-1 Power Supply Circuit
198
REACTOR B
SYSTEM POWER
YEL YEL
MODULE B
L 1 L 2
SMOOTHING
CAPACITOR
330µF x 3
CN14 CN13 CN11
CN14B CN13B
(BLU) (BLU)
TO CURRENT DETECTION
CIRCUIT IN CONTROL
P.W.B.
TO SWITCHING POWER
SUPPLY FOR CONTROL
CIRCUIT
POWER
RELAY B
R003 INRUSH
PROTECTIVE
RELAY B
CN 1
TO SWITCHING POWER
SUPPLY FOR INDOOR
UNITS 1,2,3,4
DIODE STACK B
GRY
BLU
(STRIPED)
RED
(STRIPED)
CN11B
(BLU)
SW - D - P.W.B.