 NOISE CUT-OFF
TRANSFORMER
(Ultra Isolation Transformer)
Noise Cut-off (Ultra Isolation) Transformer cuts off
noise, so your machine can perform with musical perfection.
Switching of electrical utilities in
Industrial & Commercial environment generates spikes up to
6000 Volts & high frequency power line Noises.
The spikes can cause the failure of thyristors,
Micro-processors, or other active electronic device.
The high frequency noises can interfere with
Digital-Electronic equipment causing data corruption,
erratic behaviour, loss of memory etc.
The Noise cut-off transformer eliminates such noises
& attenuates the spikes to negligible values, providing
complete protection against such electrical disturbances.
|
Salient features |
| |
|
 |
Symmetrical characteristics allow
noise attenuation from sides. |
|
|
No need for extra filter circuits. |
|
|
Can be used where different ground
potential exists or the ground of the equipment
cannot be earthed. |
|
|
No impedance matching required. |
| |
|
Applications |
|
|
Protect the Computers, CNC Machines
and Telecommunications equipment from damage due to
electrical noise, spikes etc. |
|
|
If ground potential of system units
are different from each other and are exposed to the
effects of instability at high frequencies. |
|
|
If ground of the equipment cannot be
earthed. |
|
|
When no slightest current leakage is
permitted in the equipment. Especially for computers
and CNC controls less than 100 micro Amps is only
permitted. |
|
|
To protect against strong lighting,
impulse noise, bus short-circuit, accidental
discharge of capacitors etc. When no slightest
current leakage is permitted in the equipment. |
|
|
When multiple Noise Cutt-off
transformers are used, the suppression effects
increase in proportion. Therefore, the effects of
cascading Noise Cutt-off Transformers is remarkable. |
|
|
To shield large number of electronic
equipment which individually also are producing
different types of electrical noise at a common
busbar typically CNC machines, Drives, Hardening
equipment etc. The use of NCT, being bidirectional,
prevents damage due to circulating noise
interference within them. |
|
Technical Specification |
| |
|
Input |
Output |
Rating |
Common Mode Attenuation |
|
|
Single Phase |
110/220V |
110/220V |
0.4, 1, 2, 3, 5, 8, 10, 15, 20, 25 |
120dB |
|
|
Three Phase |
415V* |
415V |
1, 2, 3, 6, 9, 5, 25, 30, 40, 50,
60, 75, 100, 125, 150, 200, 225, 250 & 300 |
100dB Standard & 120dB
on request |
|
|
Regulation |
2-4% for 100% change in current @ unity P.F. |
|
|
Connections |
Delta/Star for 3 phase |
|
|
Operating Power Factor |
0.75 lagging to 0.75 leading |
|
|
Dielectric Strength |
2500 V for 60 seconds |
|
|
Resistance |
Greater than 1000 Mega Ohms |
|
|
Coupling capacitance |
0.1 pf for 100dB 0.05pf for 120dB |
|
|
Leakage Current: |
Less than 20 micro Amps. |
|
