7EN02-0421-00

Accessories

Accessories are required depending on the type of installation on which the device is installed.

Accessories list

Accessory Catalog number
Cardew C “250 V” surge limiter 50170
Cardew C “440 V” surge limiter 50171
Cardew C “660 V” surge limiter 50172
Cardew C “1000 V” surge limiter 50183
Cardew C base * 50169
PHT1000 voltage adaptor 50248
IFL12VA1T voltage adaptor IMDIFL12VA1T
Toroid Refer Vigilohm catalog

Cardew C surge limiter

Function

Cardew C is used if the device along with the IMD is connected to the secondary connection of an MV/LV transformer (according to the rules and conventions that apply in the various countries).

It protects the low-voltage (LV) installation against over voltage hazards. It is connected to the secondary connection of the transformer. Cardew C can be used on the following systems:

  • U < 1000 V AC

  • U < 300 V DC

Selection table

Un: Nominal Phase-to-Phase Voltage of AC System

Ui: Arcing Voltage

Type of Cardew C

Accessible neutral

Not accessible neutral

U ≤ 380 V

U ≤ 220 V

400 V < Ui ≤ 750 V

250 V

380 V < U ≤ 660 V

220 V < U ≤ 380 V

700 V < Ui ≤ 1,100 V

440 V

660 V < U ≤ 1,000 V

380 V < U ≤ 660 V

1,100 V < Ui ≤ 1,600 V

660 V

1,000 V < U ≤ 1,560 V

660 V < U ≤ 1,000 V

1,600 V < Ui ≤ 2,400 V

1,000 V

Dimensions

Mounting

  • Cardew C mounted directly on busbars

  • Mounting with plate-mounted base

Connection

Refer to the instruction sheet for wiring information.

Voltage adaptor

The optional voltage/ground adaptors are PHT1000 and IFL12VA1T.

Function

The voltage adaptors PHT1000 and IFL12VA1T are used to connect IMD and the device respectively to ungrounded systems higher than 480 V AC. The wire connecting voltage adaptor to IMD and the device has to have the same voltage rating as the monitored network.

Dimensions

IFL12VA1T

PHT1000

Mounting

On DIN rail On mounting plate

Connection

Refer to the instruction sheet for wiring information.

Toroids

The toroids are used to connect the device to the channels of the system, which can be monitored. The compatible toroids are:

  • TA30

  • PA50

  • IA80

  • MA120

  • SA200

  • GA300

  • TOA80

  • TOA120

Refer to the Vigilohm catalog for the most up to date listing of compatible devices. Refer to the toroid user guide for specifications.

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