Mahendra Electrical Works - An ISO 9001-2008 Unit

Ring Type Oil Immersed Bushing CT

Outdoor Oil Cooled CT

LT Bar Primary Moulded Case CT

Custom Made Current Transformers

Potential Transformers

LT Bar Primary Tape Wound CT

Control Transformers

Wound Primary LT Resin Cast CT

Other Products

Control Transformers

During the past 2 decades Mahendra Electrical Works has been engaged in the development of low reactance transformers for use with electro-magnetic control circuits. Given below are the salient features of our standard range of Single phase Industrial Control Transformers and general Purpose transformers.

A Control Transformer is a transformer which supplies power to control and /or auxillary equipment not intended for direct connection to the main circuit. Control transformers are specifically used to provide control supply voltages for the control circuits of AC motor starters.
In addition Mahendra Electrical Works also manufactures a range of general power transformers. These can be of the single phase version or the 3 phase version with capacities from 1KVA to 50 KVA, system.

Charecteristics of Control Transformers:

Mahendra Electrical Works Industrial control Transformers are low reactance type, designed to ensure good regulation at short time loads. To ensure superior voltage regulation Mahendra Electrical Works Engineers devote appropriate attention to reducing the percentage reactance and resistance drops in the transformer design. Reduction of these values to a minimum greatly improves secondary voltage regulation.

Testing:
Mahendra Electrical Works transformers are tested in accordance with our own stringent quality control standards and a number of Electrical tests, including turns ratio, exciting current, core loss and applied potential tests are conducted to assure conformance to design specifications.

Information required with enquiry/order

Single Phase or 3 phase
Earthed or unearthed systems
Frequency
Dry Type or Oil immersed
Rated power in KVA and Rated short time Power in kva
Highest system voltage/Insulation level voltage
Type of Connection/Vector group
Class of Insulation
Service Condition

LT Single Phase, 50 Hz Air Cooled Control Transformer upto 3.5kVA

Rating in VA	A(mm)	B(mm)	C(mm)	D(mm)	E(mm)	Slot(lXb)	Weight(Kgs)
10 & 15	76	80	100	64	45	8X5	1.150
20 & 30	76	100	100	64	60	8X5	1.700
50 & 60	96	110	110	80	62.5	10X6	2.5
75 & 100	115	120	135	95	70	12X6	3.8
150 & 175	115	130	135	95	82.5	12X6	4.5
200 & 250	126	135	160	108	90	16X8	6.0
300 & 350	155	140	165	128	72	16X8	7
400	155	145	165	128	88	16X8	8.5
500	155	155	165	128	100	16X8	10.5
630	155	160	170	128	112.5	16X8	12
750	185	155	250	160	102	16X8	14
1000	185	155	250	160	102	16X8	15
1500	240	175	270	195	107.5	16X8	21
2000	240	185	270	195	120	16X8	29
2500	240	205	270	195	145	16X8	37
3000	235	235	270	160	145	20X10	42
3500	235	235	270	200	145	20X10	45

Note:
a.) Preferred Rated Primary Voltage : 110V, 240V & 415V
b.) Preferred Rated secondary Voltage : 24V, 48V, 110V, 240V
Tolerance: +/- 3mm

LT Single Pahse, 50 Hz Air Cooled Control Transformer from 4 to 50kVA

Rating in kVA	A(mm)	B(mm)	C(mm)	D(mm)	E(mm)	Approx Weight(Kgs)
4 & 5	300	240	450	200	155	65
6 & 7.5	350	260	500	250	155	82
10	400	280	550	300	160	95
15	450	300	600	380	165	120
20	500	350	650	380	165	135
25 & 30	550	375	700	450	185	160
40	600	375	700	450	195	185
50	700	400	750	500	225	210

Note:
a.) Preferred Rated Primary Voltage : 110V, 240V & 415V
b.) Preferred Rated secondary Voltage : 24V, 48V, 110V, 240V
Tolerance: +/- 3mm