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Industrial Transformers

Control, isolation, converter, rectifier, welding, heating and test transformers for industrial equipment.

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Industrial transformers and reactors displayed in the product showroom

INDUSTRIAL TRANSFORMERS / FACTORY PHOTOGRAPHS

The people behind the equipment.

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Technicians assembling transformer terminal boards along the production line

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Assembly by experienced technicians

Terminal boards, winding connections and supporting hardware are assembled at dedicated workstations. Share your required winding voltages, load duty and installation arrangement for technical review.

Technician securing transformer terminal hardware with a powered hand tool

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Connection details, seen up close

A close-up of the assembly work shows the terminal hardware and the tools used to secure it. Connection layouts and access requirements are confirmed in the approved drawings.

Open-frame industrial transformer units arranged on pallets inside the workshop

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Multiple units. Consistent production flow.

The workshop photograph shows several open-frame units at the same production stage. Select the documented series and confirm each unit’s capacity, voltage ratio, quantity and inspection requirements.

28 PRODUCT SERIES / MODELS & DATA

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Control & lighting transformers

Machine-tool and control-circuit power.

Industrial Control Transformers

Control Transformers

Series: DK

1 technical table

Single-phase control transformers for machine control, lighting and signalling.

15 published model designations

DK-25VA · DK-50VA · DK-100VA · DK-150VA · DK-200VA …

Preview published data

Overall and mounting dimensions · first 4 rows
Model	Bmax	Dmax	Emax	A ±0.4	C ±1.5	Mounting hole K	Mounting hole J
DK-25VA	78	84	90	57	57	5	9
DK-50VA	78	94	90	57	67	5	9
DK-100VA	112	94	115	76	70	6	10
DK-150VA	112	102	115	76	78	6	10

All models & specifications Drawings & documents

Industrial Control Transformers

Control Transformers

Series: BK

1 technical table

Single-phase standard control transformers for machinery and auxiliary supplies.

14 published model designations

BK-50VA · BK-100VA · BK-160VA · BK-200VA · BK-250VA …

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Overall and mounting dimensions · first 4 rows
Model	Bmax	Dmax	Emax	A ±0.4	C ±1.5	Mounting hole K	Mounting hole J
BK-50VA	77	75	75	56	57	5	9
BK-100VA	86	85	85	64	67	6	10
BK-160VA	96	89	95	84	70	6	10
BK-200VA	96	104	95	84	85	6	10

All models & specifications Drawings & documents

Machine Tool Control Transformers

Machine-Tool Control Transformers

Series: JBK3

1 technical table

50/60 Hz single-phase transformers for machinery control and lighting.

11 published model designations

JBK3-63 · JBK3-100 · JBK3-160 · JBK3-250 · JBK3-300 …

Preview published data

Overall and mounting dimensions; upright and horizontal variants retained separately · first 4 rows
Model	Bmax	Dmax	Emax	Mounting A	Mounting C	Mounting hole K or K×J	Fmax
JBK3-63	78	85	83	55±0.4	56±2	4.8×9	12
JBK3-100	86	90	95	64±0.4	67±2	4.8×9	12
JBK3-160	96	95	105	84±0.4	70±2	5.8×11	14
JBK3-250	96	115	105	84±0.4	85±2	5.8×11	14

All models & specifications Drawings & documents

Machine Tool Control Transformers

Machine-Tool Control Transformers

Series: JBK5

1 technical table

Integrated-terminal control transformers for machinery and auxiliary lighting.

10 published model designations

JBK5-63 · JBK5-100 · JBK5-160 · JBK5-250 · JBK5-400 …

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Overall and mounting dimensions; separate installation variants · first 4 rows
Model	Bmax	Dmax	Emax	Mounting A	Mounting C	Mounting hole K or K×J	Fmax
JBK5-63	78	59	85	57±0.15	46±0.125	4.6	1.5
JBK5-100	86	86	95	64±0.15	62±0.15	4.6	1.5
JBK5-160	96	90	105	83±0.175	73±0.5	5.5	1.5
JBK5-250	96	100	105	80±0.175	85±0.175	5.8	1.5

All models & specifications Drawings & documents

Machine Tool Control Transformers

Machine-Tool Control Transformers

Series: JBK6

1 technical table

Integrated-terminal control transformers for machinery and auxiliary lighting.

10 published model designations

JBK6-63 · JBK6-100 · JBK6-160 · JBK6-250 · JBK6-400 …

Preview published data

Overall and mounting dimensions; separate installation variants · first 4 rows
Model	Bmax	Dmax	Emax	Mounting A	Mounting C	Mounting hole K or K×J	Fmax
JBK6-63	78	59	85	57±0.15	46±0.125	4.6	1.5
JBK6-100	86	86	95	64±0.15	62±0.15	4.6	1.5
JBK6-160	96	90	105	83±0.175	73±0.5	5.5	1.5
JBK6-250	96	100	105	80±0.175	85±0.175	5.8	1.5

All models & specifications Drawings & documents

Safety Lighting Transformers

Portable Task-Lighting Transformers

Series: JMB

1 technical table

50–60 Hz transformers for control circuits, safety lighting and indicator lamps.

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Ratings and overall dimensions; alternative dimensions retained in the same row · first 4 rows
Rating (VA)	Rated input (V)	Rated output (V)	Overall dimensions (mm)
25	220	6	150×160×130
50	220	(6.3)	150×160×130
100	220	12	150×160×130
150	220	24	160×170×135

All models & specifications Drawings & documents

Isolation & general industrial transformers

Voltage conversion, isolation and electronic equipment.

Electronic Power Transformers

Series: EI

1 technical table

Laminated EI-core power transformers with copper primary and secondary windings.

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Bobbins, cores and mounting dimensions · first 4 rows
Power	Bobbin	Core size (mm)	Overall B×D×E	Mounting-hole spacing A (mm)	Mounting screw d
15VA	19×25	57×25	85×50×55	70	M4
20VA	19×30	57×30	85×55×55	75	M4
25VA	22×28	66×28	95×55×60	80	M4
30VA	22×32	66×32	95×60×60	84	M4

All models & specifications Drawings & documents

Toroidal Transformers

Series: OD

1 technical table

Toroidal power and isolation transformers for electronic equipment.

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Core, outside dimensions, base and mounting dimensions · first 4 rows
Core	Capacity	Outside A	Outside D	Base F	Base J	Mounting B	Mounting C	Hole d	Base thickness G
32/64-25	25VA	73	35	80	80	72	72	5	1.2
40/80-25	40VA	90	36	110	110	100	85	5	1.2
40/80-30	50VA	90	42	110	110	100	85	5	1.2
40/80-30	60VA	90	43	110	110	100	85	5	1.2

All models & specifications Drawings & documents

R-Core Transformers

1 technical table

Continuous strip-wound, ungapped R-core transformers for electronic power supplies.

19 published model designations

R-5 · R-8 · R-10 · R-20 · R-25 …

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R-core power ratings and dimensions · first 4 rows
Model	Power W	A	W	X	E	F	G
R-5	2–6	58	47	26	45	33	4
R-8	7–10	70	61	33	53	44	4
R-10	11–15	75	61	37	68	48	4
R-20	20–24	82	70	39	56	46	4×7

All models & specifications Drawings & documents

Autotransformers

Fixed Step-Up/Step-Down Autotransformers

Series: SLD

1 technical table

Enclosed fixed-ratio voltage converters for equipment with mismatched supply voltages.

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Ratings and dimensions · first 4 rows
Capacity	Input voltage	Frequency	Output voltage	Overall dimensions (mm)
0.5KVA	220V or 380V	50–60Hz	100V or 110V	280×140×155
1KVA	220V or 380V	50–60Hz	100V or 110V	285×155×162
1.5KVA	220V or 380V	50–60Hz	100V or 110V	320×195×190
2KVA	220V or 380V	50–60Hz	100V or 110V	440×300×320

All models & specifications Drawings & documents

Isolation Transformers

Neutral-to-Earth Voltage Reduction Isolation Transformers

Series: DM

1 technical table

Electrically separated primary and secondary windings for equipment isolation and noise control.

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Ratings and dimensions · first 4 rows
Capacity	Input voltage	Frequency	Output voltage	Overall dimensions (mm)
0.5KVA	220V or 380V	50–60Hz	220V or 380V	280×140×155
1KVA	220V or 380V	50–60Hz	220V or 380V	285×155×162
1.5KVA	220V or 380V	50–60Hz	220V or 380V	320×195×190
2KVA	220V or 380V	50–60Hz	220V or 380V	440×300×320

All models & specifications Drawings & documents

Three-Phase Industrial Transformers

Three-Phase Dry-Type Transformers for Rectifier Applications

Series: SG

1 technical table

Configurable three-phase dry-type transformers for low-voltage supplies and rectifier equipment.

21 published model designations

SG-100VA · SG-300VA · SG-500VA · SG-1000VA · SG-1500VA …

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Overall and mounting dimensions · first 4 rows
Model	Bmax	Dmax	Emax	A ±0.4	C ±1.5	Mounting hole K	Mounting hole J
SG-100VA	120	72	110	84	53	6	12
SG-300VA	180	106	180	90	86	7	18
SG-500VA	180	116	180	90	96	7	18
SG-1000VA	240	124	230	120	99	9	25

All models & specifications Drawings & documents

Drive & converter transformers

Servo, elevator, motor-starting and converter duties.

Elevator Control Transformers

Series: DTZ

1 technical table

Integrated transformer and rectifier supplies for elevators and goods lifts.

Rated input voltage: AC220V±5%, AC380V±5%
Rated output voltage: DC110V, AC110V, AC220V
Rated output current: 2A, 5A, 10A, 20A

4 published model designations

DTZ-630 · DTZ-900 · DTZ-1000 · DTZ-1600

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Overall and mounting dimensions · first 4 rows
Model	Bmax	Dmax	Emax	Mounting-hole spacing A	Mounting-hole spacing C	Mounting hole K	Fmax	Arrangement
DTZ-630	150	110	140	122±0.5	90±0.5	7	2
DTZ-900	150	128	142	122±0.5	105±0.5	7	2
DTZ-1000	168	128	170	137±0.5	105±0.5	9×15	2	Upright
DTZ-1600	168	138	170	137±0.5	118±0.5	9×15	2	Upright

All models & specifications Drawings & documents

Power Conversion Transformers

Single-Phase Power Conversion Transformers

Series: UDG

1 technical table

50/60 Hz transformers used within UPS, EPS, stabilised, variable-frequency and inverter supplies.

Input voltage: AC15V–600V
Output voltage: AC100V–600V
Frequency: 50/60Hz

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Overall and mounting dimensions · first 4 rows
Capacity	A	B	C	D	E	F	G	H	Maximum overall dimensions
1KVA	165±2	100±1	125±2	95±5	65±2	8±1	18±1	197±5	165×150×200
2KVA	180±2	110±1	145±2	110±5	75±2	8±1	18±1	212±5	180×170×215
3KVA	180±2	110±1	160±2	125±5	90±2	8±1	18±1	221±5	180×190×230
4KVA	200±2	120±1	170±2	130±5	90±2	10±1	25±1	232±5	200×200×240

All models & specifications Drawings & documents

Servo and CNC Transformers

Three-Phase Servo Transformers

Series: SSG

1 technical table

Dry-type, naturally air-cooled transformers for CNC control and power supplies.

16 published model designations

SSG-100VA · SSG-300VA · SSG-500VA · SSG-1000VA · SSG-1500VA …

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Overall and mounting dimensions · first 4 rows
Model	Bmax	Dmax	Emax	A ±0.4	C ±1.5	Mounting hole K	Mounting hole J
SSG-100VA	120	72	110	84	53	6	12
SSG-300VA	180	106	180	90	86	7	18
SSG-500VA	180	116	180	90	96	7	18
SSG-1000VA	240	124	230	120	99	9	25

All models & specifications Drawings & documents

Motor-starting Autotransformers

Motor-Starting Autotransformers

Series: QZB

2 technical tables

Autotransformers for infrequent reduced-voltage starting of three-phase squirrel-cage induction motors, reducing the effect of starting on the supply network.

Supply frequency: 50 Hz
Rated voltage: 380 V
Controlled motor power: 14–300 kW

16 published model designations

QZB-14 · QZB-20 · QZB-28 · QZB-30 · QZB-40 …

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Main technical characteristics · first 4 rows
Model	Controlled motor power (kW)	Maximum starting time (s)	Maximum operating current (A)
QZB-14	14	30	28
QZB-20	20	30	40
QZB-28	28	30	56
QZB-30	30	30	59

All models & specifications Drawings & documents

Three-phase Power Conversion Transformers

Three-Phase Power Conversion Transformers

Series: USG

1 technical table

Power transformers for three-phase UPS, EPS, regulated power supplies, frequency-conversion power supplies, inverters and rectifiers.

Input voltage: AC 15–1140 V
Output voltage: AC 100–1140 V
Frequency (printed under rated power): 50/60 Hz

18 published model designations

USG-3.5kVA · USG-4.0kVA · USG-5.5kVA · USG-6.0kVA · USG-8.0kVA …

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Overall dimensions · first 4 rows
Model / capacity	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	F (mm)	G (mm)	H (mm)	Maximum envelope (mm)
USG-3.5kVA	270 ±2	180 ±5	145 ±5	110 ±5	75 ±2	10 ±2	18 ±1	210 ±5	300×250×250
USG-4.0kVA	270 ±2	180 ±5	150 ±5	115 ±5	80 ±2	10 ±2	18 ±1	210 ±5	300×260×250
USG-5.5kVA	300 ±2	200 ±5	165 ±5	125 ±5	85 ±2	10 ±2	25 ±1	230 ±5	330×280×270
USG-6.0kVA	300 ±2	200 ±5	170 ±5	130 ±5	90 ±2	10 ±2	25 ±1	230 ±5	330×290×270

All models & specifications Drawings & documents

Specialty & Test Transformers

Three-Phase to Single-Phase Transformers

Series: SG

1 technical table

Dry-type conversion transformers for dedicated single-phase industrial loads and supply balancing.

Output voltage accuracy: ±1%
Voltage regulation: ≤1.5%
Output waveform distortion: No waveform distortion

10 published model designations

SG-5 · SG-6 · SG-10 · SG-15 · SG-20 …

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SG overall and mounting dimensions · first 4 rows
Model	Capacity (KVA)	Input voltage	Output voltage	Connection group	A (mm)	B (mm)	C (mm)	D (mm)	F (mm)	G mounting slots (mm)
SG-5	5	3Φ380V or other	2Φ220V or other	D/Y	320	210	290	200	110	10×20
SG-6	6	3Φ380V or other	2Φ220V or other	D/Y	340	240	320	230	130	10×20
SG-10	10	3Φ380V or other	2Φ220V or other	D/Y	360	280	300	250	170	10×20
SG-15	15	3Φ380V or other	2Φ220V or other	D/Y	460	320	340	380	166	10×20

All models & specifications Drawings & documents

Process & test transformers

Rectifier, welding, heating, integrated magnetics and test applications.

Specialty Transformers

Industrial Microwave Transformers

Series overview

High-voltage current-stabilising leakage transformers for industrial microwave equipment.

10 published model designations

500W · 600W · 700W · 800W · 900W …

All models & specifications Drawings & documents

Welding Transformers

Resistance-Welding Transformers

Series: UN / DN / FN

1 technical table

Low-voltage, high-current water-cooled transformers for resistance-welding equipment.

1 published model designations

Preview published data

Resistance-welding transformer ratings and dimensions · first 4 rows
Model	Power	No-load voltage	Frequency	Duty cycle	Overall dimensions (mm)	Mounting dimensions (mm)
UN	40KVA	4.75V	50–60Hz	50%	305×165×340	245×115
UN	60KVA	5.9V	50–60Hz	50%	350×170×350	280×120
UN	80KVA	7.5V	50–60Hz	50%	370×200×400	280×135
UN	100KVA	8.5V	50–60Hz	50%	400×200×420	305×145

All models & specifications Drawings & documents

Heating Transformers

Series: JY

6 published parameters

Isolating low-voltage, high-current supplies for resistance heating and process applications.

Input voltage: 220V, 380V
Output voltage: Selected to suit heating-wire resistance
Transformer capacity: 50VA–500KVA

All models & specifications Drawings & documents

Rectifier Transformers

Three-Phase Rectifier Transformers

Series: ZSG

1 technical table

Three-phase dry-type transformer supplies for rectification and DC systems.

16 published model designations

ZSG-20 · ZSG-40 · ZSG-60 · ZSG-100 · ZSG-125 …

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Ratings, weight, track gauge and overall dimensions · first 4 rows
Model	Rated capacity (KVA)	High-side options (V)	Low-side options (V)	Weight (KG)	Track gauge A (mm)	Overall B×D×E (mm)
ZSG-20	20	380 / 600 / 6300 / 10000	58 / 80 / 132 / 200 / 220 / 230 / 300 / 380 / 420 / 1000	130	350	700×310×550
ZSG-40	40	380 / 600 / 6300 / 10000	58 / 80 / 132 / 200 / 220 / 230 / 300 / 380 / 420 / 1000	290	550	930×450×830
ZSG-60	60	380 / 600 / 6300 / 10000	58 / 80 / 132 / 200 / 220 / 230 / 300 / 380 / 420 / 1000	365	550	990×470×850
ZSG-100	100	380 / 600 / 6300 / 10000	58 / 80 / 132 / 200 / 220 / 230 / 300 / 380 / 420 / 1000	430	550	950×395×730

All models & specifications Drawings & documents

Integrated-magnetics Transformers

Integrated Magnetics Transformers

Series: SGK

1 technical table

Transformer and reactor functions combined on a shared magnetic core for UPS, metro traction and related power conversion applications.

Custom capacity range: 1–1000 kVA
Typical short-circuit impedance: 5%–30%

1 published model designations

SGK-2

Preview published data

Parameters and dimensions · first 2 rows
Model	Phases	Rated capacity (kVA)	Frequency (Hz)	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	Mounting hole (mm)	Insulation class
SGK-2	3	80	50	380	615	280	400	590	14×20	H
SGK-2	3	100	50	400	735	400	460	580	14×20	H

All models & specifications Drawings & documents

Specialty & Test Transformers

Triple-Frequency Test Transformers

Series: SBF

1 technical table

Saturated-core frequency-triplers for induced overvoltage testing, converting 50Hz to 150Hz.

Input: Three-phase 380V, 50Hz
Output range 1: 50–500V (maximum 750V), 150Hz
Output range 2: 100–1000V (maximum 1500V), 150Hz

9 published model designations

SBF-3/500 · SBF-5/500 · SBF-10/500 · SBF-15/500 · SBF-20/500 …

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Typical SBF model parameters · first 4 rows
Model	Input voltage (V)	Output voltage (V)	Capacity (KVA)
SBF-3/500	380	0–500	3
SBF-5/500	380	0–500	5
SBF-10/500	380	0–500	10
SBF-15/500	380	0–500	15

All models & specifications Drawings & documents

Specialty & Test Transformers

Low-voltage High-current Test Transformers

2 published parameters

Dry-type current-injection transformers for current-load and temperature-rise testing.

Pre-use insulation-resistance minimum: 0.5MΩ
Cleaning alcohol concentration: 90%

All models & specifications Drawings & documents

Specialty & Test Transformers

Medium-frequency Ozone-generator Transformers

Series overview

Power-transfer and impedance-matching transformers for electronic ozone discharge generators.

All models & specifications Drawings & documents

Specialty & Test Transformers

High-power High-frequency Transformers

7 published parameters

High-frequency magnetic components for switched-mode and inverter power conversion.

Frequency threshold discussed: Above 15KHz
Core-loss comparison frequency range: 15KHz–50KHz
Same-volume output-power comparison: 2 times

All models & specifications Drawings & documents

Oil-Immersed Rectifier Transformers

Series: ZS

1 published parameter

ZS oil-immersed rectifier transformers for rectifier loads and industrial power conversion. Specify the rectifier circuit, secondary voltages, currents and harmonic duty.

Series designations: ZS

All models & specifications Drawings & documents

PROJECT SPECIFICATION

Prepare your inquiry.

Send the required ratings, application and available drawings. Refer to the published model tables for the documented design.

01Rated power and supply configuration
02Input and output voltage, frequency and phase
03Load duty, cooling and installation conditions
04Required dimensions, tests and documentation
05Quantity, destination and required delivery date

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