Procedure For Power Supply Wiring - Daikin LREQ-BY1 Installation Manual

• If small animals might enter the unit, block off any gaps (hatching
parts) with material (field supply).
Knockout hole
(For low-voltage wiring)
Knockout hole
(For high-voltage wiring)
Burr

7-3 Procedure for power supply wiring

Procedure for Power Supply Wiring
1
2
B
3
5
6
1 Power supply (3 phase 50 Hz 380~415)
2 Overcurrent circuit breaker (earth leakage circuit breaker) all pole
disconnection switch
3 Earth wire
4 Power supply terminal block
5 Mount insulation sleeves
6 Fix the power supply wiring for phases L1, L2, L3, and N,
respectively, with the provided clamp (1) to the resin clamp.
7 Fix the earth wire to the power supply wire (phase N) with the
provided clamp (1).
8 Earth wire
Perform wiring so that the earth wire will not come in contact with
lead wires of the compressor. Otherwise, noise generated may
have a bad influence on other equipment.
9 Earth terminal
10 • When two wires are connected to a single terminal, connect
them so that the rear sides of the crimp contacts face each
other.
• Also, make sure the thinner wire is on top, securing the two wires
simultaneously to the resin hook using the accessory clamp (1).
Terminal block Crip style terminal
Power circuit, safety device, and cable requirements
• A power circuit (see the following table) must be provided for
connection of the unit. This circuit must be protected with the
required safety devices, i.e. a main switch, a slow blow fuse on
each phase and an earth leakage circuit breaker.
• When using residual current operated circuit breakers, be sure to
use a high-speed type (1 second or less) 200 mA rated residual
operating current.
• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with
relevant local and national regulations.
• Specifications for local wiring are in compliance with IEC60245.
• Use wire type H05VV when protected pipes are used.
• Use wire type H07RN-F when protected pipes are not used.
Installation manual
13
4
10
L 1 L 2 L 3 N
9
8
7
Clamp (1)
Wire: narrow
Wire: thick
Resin hook
Phase and
Voltage
frequency
LREQ5 3~ 50Hz 380-415V
LREQ6 3~ 50Hz 380-415V
LREQ8 3~ 50Hz 380-415V
LREQ10 3~ 50Hz 380-415V
LREQ12 3~ 50Hz 380-415V
LREQ15 3~ 50Hz 380-415V
LREQ20 3~ 50Hz 380-415V
Point for attention regarding quality of the public electric power
supply
This equipment complies with respectively:
(1)
• EN/IEC61000-3-11 provided that the system impedance Z
less than or equal to Z
max
(2)
• EN/IEC61000-3-12 provided that the short-circuit power S
greater than or equal to the minimum S
at the interface point between the user's supply and the public system.
It is the responsibility of the installer or user of the equipment to
ensure. by consultation with the distribution network operator if
necessary, that the equipment is connected only to a supply with
respectively:
• Z less than or equal to Z
sys
• S greater than or equal to the minimum S
sc
Z (Ω)
max
LREQ5 –
LREQ6 –
LREQ8 0.27
LREQ10 0.27
LREQ12 0.27
LREQ15 0.24
LREQ20 0.24
(1) European/International Technical Standard setting the limits for
voltage changes, voltage fluctuations and flicker in public
low-voltage supply systems for equipment with rated current
≤75 A
(2) European/International Technical Standard setting the limits for
harmonic currents produced by equipment connected to public
low-voltage systems with input current >16 A and ≤75 A per
phase.
Warning, alarm, and operation output wiring connections
• Connect warning, alarm, and operation output wiring to the X2M
terminal block and clamp as indicated by the following diagram:
X 2 M
Mount insulation sleeves
Fix the wiring with the
provided clamp (1)
X2M wire specifications
Electric wire thickness
Max. wiring length
Note: Be sure to insulate the connecting equipment.
• Refer to the "7-1 Example of wiring entire system" on page 12
all means when connecting the operation output wiring.
A compressor failure may result if the operating output wiring is not
connected.
Minimum Recommended
circuit amp. fuses
12.8A
13.7A
19.3A
22.0A
24.0A
31.4A
35.0A
and
value
sc
and
max
value.
sc
minimum S value
sc
–
–
655 kVA
899 kVA
1097 kVA
761 kVA
945 kVA
C C 1 W 1 P1 P 2
0.75~1.25 mm
130 m
LREQ5~20B7Y1
Air cooled refrigeration condensing unit
4PW74302-1D – 2016.11
15A
15A
25A
25A
25A
40A
40A
is
sys
is
sc
2
by