Transformers - Technical Data

Technical specifications for the transformers are given below. There are two frame sizes. H & J. The 32kVA is only provided in the H size. All other transformers are provided in the J size. The fixing dimensions are given on the technical drawings, which are available on request. All J size transformers are interchangeable and all secondary connections on H & J transformers are identical, allowing shunts and bushbars to be standard.

Primary connection terminal arrangements are common for all sizes from 32kVA to 61kVA. Connections for 76kVA and 103kVA are larger, to permit connection of larger dimension primary cables.

Different aluminium alloy connection boxes can be offered, either with direct connection through 'Multi-Contact' type plugs or cable glands. Special boxes can be manufactured when needed by the customer.

 

Thermostats are set at: Primary: 140°
  Secondary:  80°
Toroid information: 150mV/kA±1.5% at 1 KOhms resistance

 

Transform size Frame size Sec. volts (no load) Nominal sec.amps kA Continuous sec. amps kA  Weight kg Colour
32kVA

H
5.6
5.7
4.0
19

RAL4005 Purple
48kVA

 J
6.3
7.6
5.4
28

RAL5015 Blue
54kVA

 J
7.1
7.6
5.4
29

RAL6001 Green
61kVA

 J
8.0
7.6
5.4
33

RAL7005 Grey
76kVA

 J
10.0
7.6
5.4
37

RAL1004 Yellow
103kVA
 J
13.5
7.6
5.4
50

RAL8001 brown

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