Carlo Gavazzi CTD-6S Catalog Page

Accessories
AC Split-Core Current Transformer
Type CTD-6S

( max 50x52 mm)

Product Description

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

Type Selection

Primary current

Rated primary currents from
150 A to 1000 A.

Secondary current

• Bus-bar type split core current transformer

• Class 1 accuracy

• Currents from 150 A to 1000 A
Up to 6 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-6S 1000 5A XXX

From 150A to 1000A
(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 120%
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

Six cable/bus-bar
fixing screws.
Six plastic caps for
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 +60°C (-13°F to

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

Approvals CE, cURus and CSA
Connection Screw type

Cable cross section area From 1.5 to 6 mm

Protection degree IP00 (without sealable terminal

Cable diameter Max. 50 mm
Bus-bar size Max. 50x52 mm
Weight From 450 to 700 g

140°F) (R.H. < 90% non
condensing @ 40°C)

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

Min/Max scr

elevant to terminal

que r

tor
block screws: From 1 to 2 Nm
Max screws tightening
torque relevant to the
cable/bus-bar fixing screws:
0,3 Nm

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

C)

°

2

ews tightening

Output Specifications

Rated secondary curr

ent

5 A or 1 A

Specifications are subject to change without notice CTD-6S DS ENG 020511 1

CTD-6S

Range Table

odel CTD-6S from 150A to 500A

M

Primary

urrent

C

A CL 1 CL 3

50 (@60°C/140°F)

1

200 (@60°C/140°F) 1.5 2

250 (@60°C/140°F) 1.5 3.75

300 (@60°C/140°F) 1.5 5

400 (@60°C/140°F) 2.5 5

500 (@60°C/140°F) 5 10

Burden (VA)

- 1

Benefits

Model CTD-6S from 600A to 1000A
Primary

Current

A CL 1 CL 3

.5

600 (@60°C/140°F) 7.5 15

700 (@60°C/140°F) 7.5 15

750 (@50°C/122°F) 7.5 15

800 (@50°C/122°F) 10 15

1000 (@50°C/122°F) 10 15

Burden (VA)

1 2

5 6 7 8

• Easy way to open and close the CT core by
the dedicate seleable scr
Bridging of current transformer output

•
without changing the connection of the
secondary
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
curr

• Screw terminals compatible with any kind of
wire terminals and protection of screw
terminals using specific sealable covers to
assur
6-7-8).

, so to avoid any output

ent transformer to the bus-bar (see figur

e always the best safety (see figur

ews (see figure 1).

e 4).

Dimensions (mm)

e 5-

3

4

Wiring Diagram

S1 S2

L

P1 P2

N

2 Specifications ar

e subject to change without notice CTD-6S DS ENG 020511