CHINT NXZ Series Manuel utilisateur
NO:2021.04
Standard: IEC/EN 60947-6-1
User Instructions
NXZ Series
Automatic Transfer Switch
Safety Warning
1
2
3
4
Only professional technicians are allowed for installation and maintenance.
Installation in any damp, condensed-phase environment with inflammable
and explosive gas is forbidden.
You are prohibited from touching the conductive part when the product is
operating.
Do not install the product at places where gas medium can cause metal
corrosion and insulatin damage.
After installing the product, finishing the inspection of load side line and
splitting the fire-resistance circuit, the controller must be set to “Manual”
position and the product must be set to split position. Switch the controller
to “Auto” position after line fault is eliminated.
To avoid dangerous accidents, the products should be installed and
secured according to the instructions.
This product is applicable to environment A. The product will generate
harmful electromagnetic interference if used in environment B, in which
case, user should take proper protective measures.
5
6
7
1
2
Applicatin Information
a) The normal operating ambient temperature of the product is - 5 ℃ ~ + 40 ℃;
Note: if it is used within the range of - 35 ℃ ~ + 70 ℃, please consult with the manufacturer.
b) If the altitude exceeds 2,000m, please consult with the manufacturer;
c) Class of pollution: Class 3;
d) Main circuit installation category:Ⅲ
e) Enclosure protection class: IP20.
;
Inspection and Test
01
NXZ Automatic Transfer Switch
Inspection
Determine product technical parameters.
Necessary tools
Cross screwdriver
Straight screwdriver
Outer hexagon
Figure 1 Inspection
2m
M3×12,M3
M4×60,M4 M5×70,M5
×1
×1
×3 ×1
×3 ×1 ×1
M8×100,M8
Product model NXZ-125 NXZ-250 NXZ-630 Note
Specification
of mounting
screw and nut
Standard
Flash
barrier
3P
4P
4
8
9
5
6
1
1
2
2
External
signal
terminal
Type
A
Type
B
Wire
Wire holder
Wire holder
mounting
screw
Mounting
screws and
nuts
Optional, for split
type installation of
display module,
indicated when
ordering.
Tabla 1 Standard accessories
NXZ Automatic Transfer Switch
02
The installation, operation and maintenance of the product are only carried out by
qualified professional.
Double switch off position
① ②
Normal switch on position Standby switch on position
③④
Manual debugging
Power -on test
Setting state mode Start-up mode of generator
Move the orange
button to the
operating
position
Automatic mode
＋
-
＋
-
SET
＋
-
AUTO GENERATCR
AUTO
on on
OFF
SET
ON
OFF
AUTO
MANU
I II
I
II
on on
OFF
SET
ON
OFF
AUTO
MANU
I II
I
II
on on
OFF
SET
AUTO
MANU
I II
Figure 2 Manual debugging
Figure 3-1 Power -on test
03
NXZ Automatic Transfer Switch
A B B1 E F GL H H1 H 2 H 3 H4 A1 Dd
Start-up mode of fire control
Manual mode
＋
-
＋
-
STOP
B(max)
B1
D
A(max)
A1
E
F
L
G
H4
H(max)
H1
H2
H3
＋
-
Normal Standby
Duplexing
Setting
Automatic
Manual
2XØd
3
Outline and Installation Size
Outline and Installation Size of NXZ-125 630~
Unit: mm
Product
model
Outline size Installation size
NXZ-125
NXZ-250
NXZ-630
245
295
436
130
175
272
220
304
461
30
35
58
4.5
6
9
5.5
8
13
126
175
230
21
29
41
71
99
131
107.5
146
192
21
29
41
229.5
275
400
113
152
240
4.5
6
9
21.5
27.5
43
MANU
on on
OFF
SET
ON
OFF
AUTO
MANU
I II
I
II
AUTO
on on
OFF
SET
OFF
AUTO
MANU
I II
I
II
OFF
Figure 3-2 Power -on test
Figure 4 Outline and Installation Size of NXZ-125~630
Tabla 1 Manual debugging
NXZ Automatic Transfer Switch
04
1 The phase sequence of normal and standby power supply must be
consistent. Phase N wiring cannot be wrongly connected. Normal
power supply has priority over standby power supply in terms of wiring
of power line end.
The front end of the normal and standby main circuit of the product
shall be equipped with SCPD (fuse) produced by the company
consistent with the identification on the product nameplate or SCPD
(fuse) with the same breaking capacity.
2 For the wiring of the load end of 3P product, the N pole is not
connected, and the wiring of its power line end is same as 4P product.
During wiring, incorrect N-pole wiring may result in the
burn-out of the controller!
Main circuit conductor
Normal power bus Alternative power bus.
Load bus
4P product wiring diagram
Main
circuit
Normal power supply I Normal power supply Ialternative power supply II alternative power supply II
1 3 5 N1 3 5 N1 3 5 N1 3 5 N
3Pole 4Pole
4
Installation and Wiring
Installation method
Figure 5 Installation method
NXZ Automatic Transfer Switch
≤a
≤b
≥φc≤a
≤b
≥φc
abc
NXZ-125
NXZ-250
NXZ-630
8
10
15
21.5
27.5
43
6
8
12
2
25~50mm
70~120mm2
185mm (≤320A)
2
240mm (400A)
2
150mm (500A)
2
185mm (630A)
2
6N·m
12N·m
5610
30N m·
M6×16
M8×20
M12×35
NXZ-125 NXZ-250 NXZ-630
1
1
1
1
2
2
Wire connection
Unit: mm
Product model Cable specifications Number of conductors allowed
to be clamped into the terminal
Product model
Specification of binding screw
Torque
Wrench
05
Figure 6 Wire connection
Tabla 3 Sectional area, width and number of copper wire
NXZ Automatic Transfer Switch
06
Note: Only communication terminal wiring is added to type B controller
on the basis of the signal and control terminal wiring of type A controller.
RS485
Active AC230V/0.5A
Indication of normal state Indication of alternative state
Normal neutral
Power signal
Power signal
Alternative neutral
Closing signal
Closing signal
The user should connect corresponding terminal as needed
Passive input
Passive output
Passive contact
Note: The dash line refers to the internal circuit of controller
Auxiliary power
supply
Fire control
signal
Control of power
generation start-up
Auxiliary power
Passive Input Passive Output
Fire Linkage Control
Split interface
Generator control
II Power indicator
Passive outputAC230V Output
I Power indicator
Signal and control terminal wiring
Figure 7 Type A controller
AC230V Output
07
NXZ Automatic Transfer Switch
Used in grid - power generation mode only
and connected to the generator as needed,
or omitted. In case the normal power supply
fails,terminals 502 and 503 are connected.
1.Used in grid - power generation mode and may be omitted, but the
delay of generator start-up defaults to 0s.
2.Communication terminal wiring must be connected.
Normal neutral
Normal power supply
Normal closing
Alternative neutral
Alternative power supply
Alternative closing
To fire control room
State of internal contact
of the normal controller
of normal power supply
To the remote power
of generator
Connected to upper computer (RS485)
Terminals 401 and 402 can only be connected to passive signal.
If the fire control signal is active signal, the normally open contact of
relay must be connected to the controller after switching through the
relay. Terminals 403 and 404 are connected after the duplexing of fire
control. After the fire control signal being removed, the normal
operating state can be restored by pressing any key on the controller.
+ -
RS485
+ -
Figure 8 Type B controller
Typical application
Auxiliary power
Passive Input Passive Output
Fire Linkage Control
Split interface
Generator control
II Power indicator
Passive output
AC230V Output
I Power indicator
AC230V Output
Figure 9 Typical application
NXZ Automatic Transfer Switch
08
1. Any form of electrical connection is prohibited between the two groups of terminals; otherwise it may result in the burn-out of controller!
Indication of normal state Indication of alternative state
2. Terminals 401 and 402 of type A and type B controllers can be connected with passive closing signal only to achieve fire control
linkage. If they are directly connected to any active signal, the controller will be burnt out.
① The product is in the state. Move the orange button
the manual position.
to
② Pull out the limiting piece and lock it.
5
Installation of Isolation Padlock
Figure 10 Installation of isolation padlock
Ce manuel convient aux modèles suivants
3
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