WEG Ex d Manual De Instalación, Operación Y Mantenimiento página 9

cable gland has to be mounted, completely screwed in order to ensure required pressure to the sealing
rings, so as to:
- Avoid transmission of mechanical vibrations to motor terminals.
- Guarantee degree of protection "IP" to terminal box.
- All unused holes of all the terminal boxes must be closed with a thread plug, certified
according to standards specified in 2.1, for the same type of protection of the motor.
- For "Ex d" terminal boxes, the cable inlets must be made with "Ex d" cable glands,
certified according to standards specified in 2.1 and with minimum IP55 degree of
protection.
- For "Ex de" terminal boxes, the cable inlets must be made with "Ex e" cable glands,
certified according to standards specified in 2.1 and with minimum IP55 degree of
protection.
- Only original seals, supplied by the manufacturer must be used.
The thread type and dimension of the main cable inlet of the terminal box is according table below.
Frame
90 Pg16 NPT3/4"
100
Pg21 NPT3/4"
112
Pg21 NPT3/4"
132
Pg21 NPT1"
160 Pg29 NPT1 1/2" Rp1 1/2"
180 Pg29 NPT1 1/2" Rp1 1/2"
200 Pg36 NPT2"
225 Pg36 NPT2"
250 Pg42 NPT2"
280
Pg42 NPT2"
315
Pg48 NPT3"
355
Pg48 NPT3"
The thread type and dimension of the auxiliary cable inlet of the terminal box is according table below.
Frame
90
100
112
132
160
180
Pg11 to Pg21
200
225
250
280
315
355
- English -
Main Thread
Rp3/4" M20
Rp3/4" M20
Rp1" M25
Rp1" M25
M32
M40
Rp2" M50
Rp2" M50
Rp2" M50
Rp2" M60
Rp3" M60
Rp3" M75
accessory Thread
Rp1/2"
NPT1/2" to
or
NPT1 1/2"
Rp3/4"
M25 - -
M25 - -
M32 - -
M32 M25 -
M40 M25 M50
M40 M32 M50
M50 M32 M40
- - M32
M63 - M40
M63 M75 M50
M63 M75 -
M63 M80 -
M20
to
M40
INDUCTION MOTORS FOR HAZARDOUS AREAS | 9
- Gk3/4"
- Gk3/4"
- Gk1"
- Gk1"
- Gk1 1/2"
- Gk1 1/2"
- Gk1 1/2"
NPT3" Gk2"
NPT3" Gk2"
NPT3" Gk2"
- Gk3"
NPT3" Gk3"
Gk1/2"
or
Gk3/4"
-
-
-
-
Gk1"
Gk1"
Gk1"
-
-
-
-
-