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HomeProductsUltra Isolation Transformer (UIT)

Ultra Isolation Transformer (UIT)

With very special construction all types of electrical noise predominantly common mode noise is eliminated by this UIT.  Since it isolates primary and secondary and separated neutral to ground bond on the secondary side it can be used to create separately derived source to combat current loops.

The special construction use Faraday’s shielding box to totally block the transfer of electric noise even by static charge or by way of proximity of R.F. Noises.

High insulating materials with special shielding techniques attenuate common mode noise as well minimize transverse mode noise.

The specially selected core with its magnetic properties exhibit sufficient leakage inductance to attenuate noise with proper transfer of fundamental power frequency.  The UIT is designed with split winding construction and bifilar connections to reduce coupling capacitance of winding.
Brochure

Rating

10 KVA to 2000 KVA
* Above 2000 KVA available on request
Input Voltage : 230 / 415 V (acceptable ± 10%) 1ø / 3ø + Neutral
(OR as per customer’s requirement)
Output Voltage : 230 / 415 V (same as input) 1ø / 3ø + Neutral
(OR as per customer’s requirement)
Transformer Ratio : 1:1 (Or as per customer’s requirement)
DC Galvanic Isolation : Over 100 mega-ohms between windings or any winding to ground at 500 V DC
Breakdown Strength Common Mode Noise : 2500 volts AC for 2 minutes
Rejection : Better than 110 dB
Coupling Capacitance : 0.005 to 0.009pF
Line frequency : 47 to 63 Hz
Load Regulation : Within & upto 4%
Cooling : Air/Oil cooled
Construction : Powder coated sheet metal enclosure with Input/Output terminations through brass/copper studs
  • No impedance matching required
  • Low leakage current
  • Wide operating power factor
  • Low transverse mode noise
  • Silica gel breather
  • Temperature monitoring sockets or meters
  • UV / OV cut outs
  • Electrical Isolation
  • Buchholz relay
  • UIT Layout
  • Cabinet
  • Cabinet Color
  • Cable entry
  • Termination box
  • Terminals for
Star or Delta
Open execution
Standard
Bottom
Front only
Copper cables
 
OR
OR
OR
OR
OR
 
Within enclosure
Others
Top
Front and back
Aluminum cables
 
 
 
 
OR
 
 
 
 
 
Back only
 
Sr. No. Model No. Rtng (KVA) Cooling 3ph - 3ph 3ph - 1ph (for UPS) OVER ALL DIMENSIONS
Type Copper Alluminium Copper Alluminium 170-270 184-253                (for UPS)
  WT (KG) WT (KG) WT (KG) WT (KG) H W D H W D
1 UIT 4205 5 Air 64.5 78.5 67.7 82.4 285 300 350 285 300 350
2 UIT 4207 7.5 Air 106 125 111.3 131.3 575 500 400 575 500 400
3 UIT 4210 10 Air 126 149 132.3 156.5 575 500 400 575 500 400
4 UIT 4215 15 Air 140 174 147.0 182.7 625 620 670 625 620 670
5 UIT 4220 20 Air 140 188 147.0 197.4 625 620 670 625 620 670
6 UIT 4225 25 Air 190 208 199.5 218.4 625 620 670 625 620 670
7 UIT 4230 30 Air 225 241 236.3 253.1 750 990 880 750 990 880
8 UIT 4240 40 Air 267 286 280.4 300.3 900 1055 880 900 1055 880
9 UIT 4250 50 Air 305 328 320.3 344.4 900 1055 880 900 1055 880
10 UIT 4260 60 Air 369 395 387.5 414.8 1000 930 1080 1000 930 1080
11 UIT 4275 75 Air 421 453 442.1 475.7 1000 930 1080 1000 930 1080
12 UIT 4275 75 Oil 350 373 362.3 386.1 900 1055 1050 900 1055 1050
13 UIT 42100 100 Air 428 568 443.0 587.9 1000 1055 1130 1000 1055 1130
14 UIT 42100 100 Oil 440 465 455.4 481.3 1000 1080 1390 1000 1080 1390
15 UIT 42125 125 Air  509 655 526.8 677.9 1000 1055 1130 1000 1055 1130
16 UIT 42125 125 Oil 490 435 507.2 450.2 1000 1080 1390 1000 1080 1390
17 UIT 42150 150 Air  675 735 698.6 760.7 1100 1130 1130 1100 1130 1130
18 UIT 42150 150 Oil 430 475 445.1 491.6 1100 1080 1450 1100 1080 1450
19 UIT 42175 175 Air 770 831 797.0 860.1 1100 1130 1130 1100 1130 1130
20 UIT 42175 175 Oil 621 671 642.7 694.5 1100 1130 1450 1100 1130 1450
21 UIT 42200 200 Air 869 935 886.4 953.7 1150 1055 1130 1150 1055 1130
22 UIT 42200 200 Oil 730 785 744.6 800.7 1000 1710 1360 1000 1710 1360
23 UIT 42225 225 Air 940 1018 959.0 1038.5 1150 1055 1130 1150 1055 1130
24 UIT 42225 225 Oil 740 790 755.0 806.0 1000 1710 1360 1000 1710 1360
25 UIT 42250 250 Air 1004 1082 1024.0 1104.0 1150 1055 1180 1150 1055 1180
26 UIT 42250 250 Oil 825 875 841.5 892.5 1000 1710 1360 1000 1710 1360
27 UIT 42275 275 Air 1055 1144 1076.0 1167.0 1150 1055 1230 1150 1055 1230
28 UIT 42275 275 Oil 859 930 876.0 949.0 1000 1710 1410 1000 1710 1410
29 UIT 42300 300 Air 1155 1244 1178.0 1269.0 1150 1055 1280 1150 1055 1280
30 UIT 42300 300 Oil 895 955 913.0 974.0 1000 1710 1460 1000 1710 1460
31 UIT 42400 400 Oil 1075 1143 1097.0 1166.0 1150 1710 1460 1150 1710 1460
32 UIT 42500 500 Oil 1275 1365 1300.5 1392.0 1150 1710 1600 1150 1710 1600
 
Sr.
No.		 Model No. KVA 1ph - 1ph Dimensions
Cooling Copper Alluminium H W D
1 UIT 4003 3 Air 40 45 400 375 375
2 UIT 4005 5 Air 60 50 400 375 375
3 UIT 4007 7 Air 70 80 450 440 390
4 UIT 4010 10 Air 85 90 450 440 390
5 UIT 4015 15 Air 135 140 450 440 390
6 UIT 4020 20 Air 150 160 450 440 390
7 UIT 4025 25 Air 175 180 625 540 540