Carlo Gavazzi CTD-8V, CTD-8H Catalog Page

Accessories
AC Solid-core Current Transformer
Type CTD-8V / CTD-8H

Product Description

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

Type Selection

Model

Rated primary currents from
150 A to 2500 A.

Primary current

( max 30x80 mm)

• Bus-bar type solid- core current transformer

• Class 0.5 accuracy
Currents from 150 A to 2500 A

•

• Up to 10 Bus-bar isolated fixing screws

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

• Sealable terminal block covers

Ordering Key

Model
Primary current
Secondary current
Option

Secondary current

CTD-8V 1500 5A XXX

Option

CTD-8V: vertical mounting
CTD-8H: horizontal mounting

From 150A to 2500A
(Refer to the Range Table)

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 curr
Security factor (FS) ≤ 5 (Class: 0.5, 1 and 3)

ent rating

ent rating

ypical 100 I

T

2.5 I

th

The short-time thermal

ent I

curr
by the cable/bus-bar size

Refer to the Range T

/1 s

n

is anyway limited

th

able

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 bus-bar

T
fixing screws.

en plastic caps for

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

opicalization

r

T

ews.

ent,

1A (on request)
5A

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

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

ovals

Appr

Connection Screw type

Pr

Bus-bar size Max. 30x80 mm
W

oss section ar

Cable cr

otection degr

eight

ea

ee

XXX: none
XTX: tropicalization

Table (-13°F to: refer to the
Range T
condensing @ 40°C)

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

CE.

cURus and CSA (150A to 1000A)

Fr
Min/Max scr
torque relevant to terminal
block screws: From 1 to 2 Nm
Max scr
torque relevant to the
cable/bus-bar fixing screws:
0,3 Nm

IP00 (without sealable terminal
covers)
IP20 (with sealable terminal
block covers + wire terminals)

Fr

able) (R.H. < 90% non

om 1.5 to 6 mm

ews tightening

ews tightening

om 450 to 700 g

C)

°

2

Output Specifications

Rated secondary curr

ent

5 A or 1 A

Specifications are subject to change without notice CTD-8VH DS ENG 150311 1

CTD-8V / CTD-8H

Range Table

Model CTD-8V and CTD-8H from 150A to 750A

Primary
Current

Temperature

Extended

current rating

Burden (VA)

A CL 0.5 CL 1 CL 3

(@60°C/140°F)

150

200

250

300

400

500

600

700

750

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

(@60°C/140°F)

120% - - 2

120% - - 4

120% - - 5

120% - 2 6

120% 3 5 8

120% 5 7 10

120% 6 10 12

120% 6 10 12

120% 8 12 15

Benefits

1 2 3

Model CTD-8V and CTD-8H from 800A to 2500A

Primary
Current

emperature

T

Extended

current rating

B

A CL 0.5 CL 1 CL 3

(@60°C/140°F)

800

(@50°C/122°F)

000

1

250

(@50°C/122°F)

(@50°C/122°F)

(@50°C/122°F)

(@50°C/122°F)

(@50°C/122°F)

(@40°C/104°F)

1200

1

1500

1600

2000

2500

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

temp. 40°C max.

120% 8 12 15

20%

1

0

1

120% 12 15 20

20%

1

100% (+)

100% (*)

100% (*)

100% (*)

2

1

15 20 25

15 20 25

20 25 30

25 30 40

Dimensions Vertical mounting (mm)

urden (VA)

5

1

5

1

0

2

0

2

4

Bridging of current transformer output without

•

5 6

changing the connection of the secondary, so
to avoid any output overvoltage during either
the maintenance or the installation pr

ocedure

(see figure 1).

• Easy output and earth connection (see fig. 2).

• Screw terminals compatible with any kind of wire
terminals (see figure 3-4-5-6).

Wiring Diagram

S1 S2

Dimensions Horizontal mounting (mm)

L

P1 P2

N

2 Specifications ar

e subject to change without notice CTD-8VH DS ENG 150311