Transformer Sets

Transformer sets are designed for the transformation of high voltage to low voltage, for switching and protection of three-phase electrical devices, squirrel cage electric motors or for power supply and protection of an isolated power supply network. The switching mode is controlled according to the needs of the user in the given operation.

The Transformer Set has got protection against explosion I M2(M1) Ex d ib [iа Ma] I Mb or I M2(M1) Ex d ib [ia] [op is] I M or others as required.

The product complies with technical requirements for devices determined for use in potentially explosive atmospheres according to Directive 2014/34/EU (NV 116/2016 Sb.). The product also complies with technical requirements of standards according to current requirements and regulations of the country where the device is certified.

Content:

Primary side
Transformer VN
Secondary side types for voltages up to 1140V
Secondary side types for 3300V voltage

Primary side

Transformer sets can be equipped with several versions of the primary side type

SN6

SN17

SN36

SN56

Technical data:

Nominal voltage	3,3/6/10/11 kV IT, 50Hz or 60Hz
Nominal current	according to power output, max. 250A
Nominal short-circuit power	max. 25kА
Nominal off-switching short-circuit current	max. 25kА
Short-circuit resistance, effective value	max. 25kА (3s)
Time for off-switching	<50ms
Maximum number of power inputs	2
Possibility of transit output	max. 2

Transformer VN

The middle part of the transformer set can be supplied in two variants:

ROUND END

Better heat dissipation

Performance:
up to 2200kVA for secondary voltage 1140V
up to 3150kVA for secondary voltage 3300V

SQUARE END

Better access to HV transformer

Performance:
up to 1700kVA for secondary voltage 1140V
up to 2100kVA for secondary voltage 3300V

Secondary side

Transformer set can be equipped with different variations of the secondary side depending on the customer's requirements or the needs of the project.

Secondary side types for voltages up to 1140V

SN5

Basic technical parameters:
Nominal voltage	from 400 to 1140VAC, 50/60Hz
Maximum number of power outputs	3
Maximum current of an output	345A
Outputs 42/127/230V	100/300VA
Display ID1 further enables data archiving and data transfer among consecutively connected systems.

SN40

Basic technical parameters:
Nominal voltage	from 400 to 1140VAC, 50/60Hz
Maximum number of power outputs	4
Maximum current of an output	400A
Outputs 42/127/230V	100/300VA
Equipped: without switching outputs Two circuit breakers 630A Two vacuum contactors 630A	protected outputs with 2 outputs from each with 2 outputs from each
LCD displej pro zobrazování provozních a poruchových stavů, měřených veličin, pro archivaci a přenos dat mezi návaznými připojenými systémy.

SN12

Basic technical parameters:
Nominal voltage	from 500 to 1140VAC, 50/60Hz
Maximum number of power outputs	10
Equipped: disconnector 500A vacuum contactors 200/450A transformer 127/230V, 5kVA	3 branches max. 10 outputs max. 3 outputs
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

SN46

Basic technical parameters:
Nominal voltage	from 500 to 1140VAC, 50/60Hz
Maximum number of power outputs	9
Equipped: quick-changing module system disconnector 1000A vacuum contactors 80/200/450A transformer 127/230 V, 5kVA	max. 3 modules 2 branches max. 9 outputs max. 2 outputs (1 module)
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

SN44

Basic technical parameters:
Nominal voltage	from 500 to 1140VAC, 50/60Hz
Maximum number of power outputs	12
Equipped: quick-changing module system disconnector 1000A vacuum contactors 80/200/450A transformer 127/230V, 5kVA	max. 4 modules 2 branches max. 12 outputs max. 2 outputs (1 module)
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

SN42/SN52

Basic technical parameters:
Nominal voltage	from 500 to 1140VAC, 50/60Hz
Maximum number of power outputs	15
Equipped: quick-changing module system disconnector 1000A vacuum contactors 80/200/450A transformer 127/230V, 5kVA circuit breaker 1000A for external switching of the secondary side	max. 6 modules 2 branches max. 15 outputs max. 2 outputs (1 module) only for SN52
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

SN50

Basic technical parameters:
Nominal voltage	500/660VAC, 50Hz
Total nominal current	2 x 540A
Maximum number of power outputs	2
Outputs 127/230V	2 x 6/3A
Equipped: frequency invertor 660V transformer 127/230V closed water cooling circuit engine braking	max. 2 2 x 6/3A 12l/min resistor with water cooling
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

Secondary side types for 3300V voltage

SN18

Basic technical parameters:
Nominal voltage	3300VAC, 50/60Hz
Maximum number of power outputs	2
Maximum current of an output	345A
Outputs 42/127/230V	100/300VA
Display ID1 further enables data archiving and data transfer among consecutively connected systems.

SN11

Basic technical parameters:
Nominal voltage	3300VAC, 50/60Hz
Maximum number of power outputs	4
Equipped: quick-changing module system earthing switch 3,6kV vacuum contactors 450A transformer 127/230V, 5kVA	max. 4 modules 4 max. 4 outputs (reversible) max. 2 outputs

The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.

SN47

Basic technical parameters:
Nominal voltage	3300VAC, 50/60Hz
Maximum number of power outputs	6
Vybavení: quick-changing module system earthing switch 3,6kV vacuum contactors 450A transformer 127/230V, 5kVA	max. 6 modules 4 max. 6 outputs (reversible) max. 2 outputs (1 module)
The Load Center is equipped with an industrial PC which serves for monitoring and parameterization of digital protections of the set, saving parameters of the protections, measuring values, operating and faulty conditions. All the information is possible to transmit by I.S. separators to a remote working place. The Industrial PC is equipped with I.S. keyboard, I.S. mouse and 12” screen. It is possible to add optical output and voice communication (VoIP) via Ethernet.