Electrical connections
14 - EN
TTF300
CI/TTF300-X1
4.2
Cable glands
4.2.1 TTF300 without cable gland
The cable diameter must be appropriate for the cable gland used to ensure compliance with the
requirements for IP / Nema 4x protection class. This must be checked during installation.
For delivery without cable gland (threads M20 x 1.5 or NPT 1/2"), the following points must be
observed:
•
Use cable glands acc. to version M20 x 1.5 or NPT 1/2".
•
Observe information in data sheet / operating instructions for cable gland used.
•
Check the working temperature for the cable gland used.
•
Check the IP protection class IP 66 / 67 or NEMA 4X of the cable gland used.
•
Check the ex relevant specifications for the cable gland used acc. to manufacturer’s data
sheet or Ex certificate.
•
The cable gland used must be approved for the cable diameter (IP protection class).
•
For tightening torque, observe information in data sheet / operating instructions for cable
gland used.
4.2.2 TTF300 Ex d models without cable gland
For delivery of the product variants TTF300-E3... (ATEX Ex d / flameproof enclosure) and
TTF300-E4....(ATEX Ex d and Ex ia or flameproof enclosure and intrinsic safety) without cable
gland, an approved ATEX Ex d cable gland must be used according to EN 60079-1.
The ex relevant specifications for the cable gland used (M20 x 1.5 6H or 1/2" NPT, clamping
range, temperature range, etc.) must comply with the requirements for PTB 99 ATEX 1144
approvals in order to ensure "d" type of protection for the TTF300.
For information on the cable gland used, refer to the relevant data sheet and operating
instructions.
