Wall Bushing (Air-to-Air)

Wall bushing is an equipment used to carry current at high voltage through a Wall, a Roof or a Framework. Since both sides are exposed to air, it is also called air to air bushing. The main application of wall bushings is in power plants and indoor substations for passing high voltage conductor through walls.
Condenser Bushings Niroutrans

Some Features of through Wall Bushings made by NirouTrans:

1- Excellent Electrical withstand Capability
2- Sufficient Mechanical Strength
3- Low Thermal Stress
4- Magnetic Oil level indicator or Sight Glass (on Request)
5- Large Creepage distance
6- Sufficient Flashover distance
7- Installation in Horizontal, Vertical or any angle
8- High Technology Machinery
9- Meet the requirements of customers according to the world’s most well-known standards.
8- Economical price

Oil impregnated bushings(OTF) Niroutrans

Basics

Bushing Dimentions (Details)

NGB2 Bushing Dimentions

NGB2 Models

Instruction Manual

Model Details:

: click to switch tables.

Model	Code	Um (kV)	Ir (A)	WTH (mm)	Oil Level Indicator
NGB2-325-1250-WTH=400	W7214E	72.5	1250	400	Sight Glass
NGB2-450-1250-WTH=400	W1014E	100	1250	400	Sight Glass
NGB2-650-1250-WTH=400	W1414E	145	1250	400	Sight Glass

Model	Code	Um (kV)	Ir (A)	L (mm)	L1 (mm)	L2 (mm)	L3 (mm)	L4 (mm)	L5 (mm)	L6 (mm)	L7 (mm)	L8 (mm)	L9 (mm)	d1 (mm)	d2 (mm)	d3 (mm)	d4. Min (mm)	t1 (mm)	t2 (mm)	t3 (mm)	t4 (mm)	t5 (mm)	WTH. Max (mm)	t7 (mm)	D1 (mm)	D2 (mm)	n x d5 (mm)	R1 (deg.)	R2 (deg.)	R3 (deg.)	Mass (Kg)
NGB1-325-1250-CTE=000	W7214E	72.5	1250	2311	680	680	420	1014	953	300	100	690	690	30	260	260	700	85	20	105	75	25	400	383	400	360	8 x 18	30	45	125	130
NGB1-450-1250-CTE=000	W1014E	100	1250	2740	900	900	420	1234	1173	300	100	910	910	30	223	223	700	85	20	105	75	25	400	383	400	360	8 x 18	30	45	125	150
NGB1-650-1250-CTE=000	W1414E	145	1250	3832	1410	1410	420	1726	1761	250	145	1420	1420	30	287	365	600	85	25	105	110	25	400	470	480	420	8 x 22	30	45	150	290

* The PCD of Air outlet.
** The O-Ring of Transformer shall be placed against the sealing surface limited to Dmin, Dmax for secure sealing.
*** Diameter of Copper Conductor.