Ultra Isolation Transformer-Isoline  9800 SERIES
  
     
 
Features   Ultra Isolation Transformer
  • Filters Power Line Noise, Spikes and Transients
  • Isolates Sensitive Equipment from Noisy Power Lines
  • Complete Electrostatic Shielding
  • Minimizing Common Mode Noise by Over 110dB, Which is Impossible with Conventional Ordinary Isolation Transformers
  • Minimises Transverse Mode Noise
     
Applications
1.
In computer the presence of spikes, transients or noise in the supply line will lead to erratic behavior of the computer. Crotech’s ISOLINE eliminates line disturbances and prevents faulty and erratic operations.
2.
In Instrumentation and telemetry, line disturbances will lead to faulty recordings or readings. Crotech’s ISOLINE completely isolates power line disturbances and ensures more reliable operation of the equipment.
3.
For patient’s safety in hospitals, all diagnostics or therapeutic medical equipment should be completely isolated from the supply line. Complete patient/operator safety is assured by ISOLINE due to its excellent DC isolation as well as total electrostatic shielding from the power line.
4.
Other systems essentially requiring ISOLINE are digital communication systems, audio and video recording equipment, which get badly affected by line noise.

ISOLINE Ultra Isolation Transformers are available from 2500VA to 25KVA, Single phase as standard models. For three phase input, Three single phase units can be connected in STAR or DELTA configuration. They are conservatively rated to ensure long life and highest reliability.
Description
Ordinary isolation transformers isolate one circuit from another, while magnetically coupling wanted energy from one to other. Such a transformer is adequate for use with low gain circuits or insensitive instruments. However, if the transformers must work into a high gain load or sensitive instrumentation, noise potentials between the primary circuit and ground must be prevented from affecting the secondary circuits due to capacitive and resistive coupling between the transformers windings.

Traditional techniques for keeping noise from reaching the transformer secondary e.g. the standard faraday shield (A grounded single turn of conducting foil between the windings) will divert much of the primary noise current to ground. But noise still can be coupled into the secondary because of the electrostatic field around the faraday shield and will cause serious problems in the secondary circuits.

To overcome this problem, ISOLINE range employs a unique multiple shielding technique that reduces the interwinding capacitance below 0.009pF and increases the DC isolation over 100M ohms. ISOLINE has therefore only ten thousandth the noise leakage of an ordinary transformer.

Technical Specifications
Input Voltage

115/230V nominal. Two windings in parallel or series (2.5KVA & 5KVA)
230V nominal (7.5KVA and above). Other voltages on request.
Acceptable Input Range ±10%.
Output Voltage 230V AC.
Mode of Operation 1:1 Isolation transformer.
Common Mode Noise Rejection
(Transients, Spikes and Surges) 		Over 110dB.
Coupling Capacitance Less than 0.009pF.
DC Galvanic Isolation Over 100Mohms between any windings or windings to ground.
Breakdown Strength 2500V AC for 2 minutes acceptable.
Line Frequency 47 to 63Hz.
Load Regulation ±3%.
Termination On terminal block/Brass studs of adequate rating.

Power Rating
MODEL
POWER RATING
KVA
DIMENSIONS *
W x H x D (mm)
WEIGHT
(approx.) Kg.
9815
2.5
250 x 320 x 240
40
9816
5.0
250 x 390 x 240
55
9817
7.5
370 x 450 x 285
94
9818
10.0
370 x 490 x 285
122
9819
15.0
370 x 535 x 285
152
9820
20.0
370 x 680 x 285
225
9821
25.0
425 x 600 x 340
225
All dimensions include leg height.
* Higher Capacity Systems on Request.
 

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