Carlo Gavazzi CTD-9S Catalog Page

Accessories
AC Split-Core Current Transformer
Type CTD-9S

( max 35x125 mm)

Product Description

Split-core current transformer
with bus-bar mountng facility.

Type Selection

Primary current

Rated primary currents from
400 A to 3200 A.

Secondary current

• Bus-bar type split core current transformer

• Class 1 accuracy

• Currents from 400 A to 3200 A
Up to 10 Bus-bar isolated fixing screws

•

• Double screw terminals (up to 8-wire connections)

• Sealable terminal block covers

• Sealable fixing split-core screws

Ordering Key

Model
Primary current
Secondary current
Option

Option

CTD-9S 2000 5A XXX

From 400A to 3200A
(Refer to the Range Table)

1A (on request)
5A

Input Specifications

Operating frequency 48 to 62 Hz
Max. system voltage 0.72 kV
Rated insulation level 3 kV/1 min. @ 50 Hz
Insulation class E (max 75°C)
Short-time curr

I

th

I

dyn

Extended current rating refer to the Range Table
Security factor (FS) ≤ 5 (Class: 1 and 3)

ent rating

ypical 100 I

T

2.5 I

th

The short-time thermal

ent I

curr
by the cable/bus-bar size

/1 s

n

is anyway limited

th

General Specifications

Standards According to EN60044-1
Housing ABS, self-extinguishing:

Mounting Bus-bar mounting
Standard accessories Two terminal block screws.

Special features 1 A secondary curr

UL 94 V-0

en cable/bus-bar

T
fixing screws.

en plastic caps for

T
cable/bus-bar fixing scr
Two sealable terminal block
covers.

opicalization

r

T

ews.

ent,

XXX: none
XTX: tropicalization (on request)

Working temperature -25°C to: refer to the Range

Storage temperature -30°C to +70°C (-22°F to

Approvals CE.

Connection Screw type

Protection degree IP00 (without sealable terminal

Bus-bar size Max. 35x125 mm
Weight From 450 to 700 g

Cable cr

oss section ar

ea

Table (-13°F to: refer to the
Range Table) (R.H. < 90% non
condensing @ 40°C)

158°F) (R.H. < 90% non
condensing @ 40°C)

cURus and CSA (400A to 2000A)

From 1.5 to 6 mm
Min/Max screws tightening

elevant to terminal

que r

tor
block scr
Max screws tightening
torque relevant to the
cable/bus-bar fixing screws:
0,3 Nm

covers)
IP20 (with sealable terminal
block covers + wire terminals)

ews: Fr

2

om 1 to 2 Nm

Output Specifications

Rated secondary curr

ent

5 A or 1 A

Specifications are subject to change without notice CTD-9 S DS ENG 150311 1

CTD-9S

Range Table

Model CTD-9S from 400A to 1200A

rimary

P
Current

Temperature

xtended

E

current rating

Burden (VA)

A CL 1 CL 3

400 (@60°C/140°F) 120% 3

500 (@60°C/140°F) 120% 2 4

600 (@60°C/140°F) 120% 4 6

700 (@60°C/140°F) 120% 4 8

750 (@60°C/140°F) 120% 4 8

800 (@60°C/140°F) 120% 4 8

1000 (@60°C/140°F) 120% 6 10

1200 (@50°C/122°F) 120% 8 12

Benefits

1 2

Model CTD-9S from 1250A to 3200A

rimary

P
Current

Temperature

xtended

E

current rating

Burden (VA)

A CL 1 CL 3

1250 (@50°C/122°F) 120% 8 12

1500 (@50°C/122°F) 120% 10 15

1600 (@50°C/122°F) 120% 10 15

2000 (@50°C/122°F)

2500 (@50°C/122°F)

3000 (@40°C/104°F)

3200 (@40°C/104°F)

(*) A max overload of 120% for 1 min. every 30 min. is allowed.
(+) A continuous overload of 120% of the range is allowed @ amb.

emp. 40°C max.

t

3

100% (+)

100% (*)

100% (*)

100% (*)

15 20

20 25

25 30

25 30

4

5 6 7 8

Easy way to open and close the CT core by

•
the dedicate seleable screws (see figure 1).

Dimensions (mm)

• 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 2).

• Easy output and earth connection (see fig. 3).

• Multiple screws provided with isolation cap
screws to grant a strong and reliable fixing of the
current transformer to the bus-bar (see figure 4).

• Screw terminals compatible with any kind of

e terminals and pr

wir

otection of screw
terminals using specific sealable covers to
assure always the best safety (see figure 5­6-7-8).

Wiring Diagram

S1 S2

L

P1 P2

N

2 Specifications ar

e subject to change without notice CTD-9 S DS ENG 150311