Accessories
AC Current Transformer (max 23mm
Ø
cable)
Type CTD-1X
• Cable and bus-bar type current transformer
• 0.5 class, currents from 50 to 300 A
• Removable DIN-rail mounting holder
• Removable panel fixing clips
• 2 cable/bus-bar isolated fixing screws
• Double screw terminals (up to 8-wire connections)
• Sealable terminal block covers
Product Description
Cable/Bus-bar type current
transformer with DIN-rail/bus-
bar and panel mounting
facility.
Rated primary currents from
50 A to 300 A.
Ordering Key CTD-1X 100 5A XXX
Model
Primary current
Secondary current
Option
Type Selection
Primary current
From 50 to 300A
(Refer to Range Table)
Secondary current
1A
5A
Optional fixing kit: CTD-kit
Option
XXX:
XTX:
none
tropicalization
Input Specifications
Operating frequency
Max. system voltage
Rated insulation level
Insulation class
Short-time current rating
I
th
I
dyn
48 to 62 Hz
0.72 kV
3 kV/1 min. @ 50 Hz
E (max 75°C)
Typical 100 I
n
/1 s
2.5 I
th
The short-time thermal
current I
th
is anyway limited
by the cable/bus-bar size
120%
≤
5 (Class: 0.5, 1 and 3)
Special features
Working temperature
Storage temperature
Approvals
Connection
Cable cross section area
Extended current rating
Security factor
(FS)
General Specifications
Standards
Housing
Mounting
Standard accessories
According to EN61869-2
ABS, self-extinguishing:
UL 94 V-0
DIN-rail bus-bar
and panel mounting
Two terminal block screws.
Two sealable terminal block
covers.
Two panel mounting
fixing clips.
One DIN rail adapter.
Extended fixing kit CTD-kit:
Six cable/bus-bar
fixing screws.
Six plastic caps for
cable/bus-bar fixing
screws.
Protection degree
Cable diameter
Bus-bar size
Weight
Two panel mounting
fixing clips.
1 A secondary current,
Tropicalization
-25°C to +60°C (-13°F to
140°F) (R.H. < 90% non
condensing @ 40°C)
-30°C to +70°C (-22°F to
158°F) (R.H. < 90% non
condensing @ 40°C)
CE, cUrus and CSA
Screw type
From 1.5 to 6 mm
2
Min/Max screws tightening
torque relevant to terminal
block screws:
From 1 to 2 Nm
Max screws tightening
torque relevant to the
cable/bus-bar fixing
screws: 0,3 Nm
IP00
IP20 (with sealable terminal
block covers + wire termi
nals)
Max. 23 mm
Max. 20x5 mm
From 150 to 200 g
Optional accessories
Output Specifications
Rated secondary current
5 A or 1 A
Specifications are subject to change without notice
CTD-1X DS ENG 140116
1
CTD-1X
Range Table
Model CTD-1X from 50A to 100A
Primary
Burden (VA)
Current
A
CL 0.5
CL 1
CL 3
50 (@60°C/140°F)
1
1.25
60 (@60°C/140°F)
1
1.25
70 (@60°C/140°F)
1.5
1.75
75 (@60°C/140°F)
1
1.25
1.75
80 (@60°C/140°F)
1.25
1.5
2
100 (@60°C/140°F)
1.5
1.75
2.25
Model CTD-1X from 120A to 300A
Primary
Burden (VA)
Current
A
CL 0.5
CL 1
CL 3
120 (@60°C/140°F)
1.75
2
2.5
125 (@60°C/140°F)
2
2.25
2.75
150 (@60°C/140°F)
2.25
2.5
3
160 (@60°C/140°F)
2.5
2.75
3.25
200 (@60°C/140°F)
3
3.25
3.75
250 (@50°C/122°F)
4.5
4.75
5.25
300 (@50°C/122°F)
5
5.5
6
Benefits
1
2
3
4
5
6
7
8
9
10
• Easy and quick mounting either on a panel or
on a DIN-rail (see figure 1-2).
• Protection of screw terminals using specific
sealable covers to assure always the best
safety (see figure 3).
• Bridging of current transformer output without
changing the connection of the secondary, so
to avoid any output overvoltage during either
the maintenance or the installation procedure
(see figure 4).
• Easy output and earth connection (see fig. 5).
• Screw terminals compatible with any kind of
wire terminals (see figure 6-7-8-9).
• Multiple screws provided with insulation caps to
grant a strong and reliable fixing of the
current transformer to the bus-bar (see figure 10).
Dimensions (mm)
44
30
Wiring Diagram
S1
S2
22
L
27
65,2
83,6
φ
2
3,3
44
P1
P2
69,2
N
46
2
Specifications are subject to change without notice
CTD-1X DS ENG 140116
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