Block RKD Catalog Page

Toroidal safety isolating and isolating
transformer

RKD

Typ RKD 15/.. RKD 20/.. RKD 30/.. RKD 40/..

Input

Rated input voltage 2 x 115 Vac 2 x 115 Vac 2 x 115 Vac 2 x 115 Vac

Rated frequency 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz

Output

Rated output voltage: Order no.

2x6 Vac: RKD 15/2x6

2x9 Vac: RKD 15/2x9
2x12 Vac: RKD 15/2x12
2x15 Vac: RKD 15/2x15
2x18 Vac: RKD 15/2x18

2x12 Vac: RKD 20/2x12
2x15 Vac: RKD 20/2x15
2x18 Vac: RKD 20/2x18
2x24 Vac: RKD 20/2x24*

2x6 Vac: RKD 30/2x6

2x9 Vac: RKD 30/2x9
2x12 Vac: RKD 30/2x12
2x15 Vac: RKD 30/2x15
2x18 Vac: RKD 30/2x18
2x24 Vac: RKD 30/2x24**

2x6 Vac: RKD 40/2x6

2x9 Vac: RKD 40/2x9
2x12 Vac: RKD 40/2x12
2x15 Vac: RKD 40/2x15
2x18 Vac: RKD 40/2x18
2x24 Vac: RKD 40/2x24**

Rated Power 15 VA 20 VA 30 VA 40 VA

No-load voltage (app. x factor) 1.35 1.29 1.20 1.20

No-load loss (typ.) 0.30 W 0.33 W 0.45 W 0.45 W

Efficiency 73.0 % 77.0 % 80.0 % 82.0 %

Standards

Classification

Safety isolating transformer Safety isolating transformer

*Mains transformer

Safety isolating transformer
*Mains transformer

Safety isolating transformer
**Isolating transformer

Approvals

Approvals cURus cURus cURus cURus

Environment

Ambient temperature max. 40 °C 40 °C 40 °C 40 °C

Safety and protection

Type

Open type Open type Open type Open type

Insulation class

VDE=B, UL=class 105 VDE=B, UL=class 105 VDE=B, UL=class 105 VDE=B, UL=class 105

Protection index

IP 00 IP 00 IP 00 IP 00

Safety class (prepared)

II II II II

Short circuit strength

non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof

Test voltage 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz

Order numbers

Order Number see rated output voltage see rated output voltage see rated output voltage see rated output voltage

+

-

Transformers

Toroidal safety isolating and isolating
transformer

RKD

General Data

Rated input voltage 2 x 115 Vac

Rated output voltage 2 x 6 - 2 x 115 Vac

Power 15 - 3000 VA

Insulation class B

Maximum ambient temperature 40 °C

Efficiency up to 98 %

Degree of protection IP 00

Advantages

Minimum size at high power

Low weight

Double input voltage for series or parallel connection

Minimal no-load losses

Outstanding temperature behaviour thanks to low magnetic leakage field

Very low noise field

Applications

As a mains transformer for adjustment of the voltage and simple electrical
isolation.

As an isolating transformer for the safe electrical isolation of the input and
output sides. The transformer may be used to set up protective separation as a
protective measure in accordance with VDE 0100.

As a safety isolating transformer for the safe electrical isolation of the input
and output sides. The transformer is suitable for creating SELV and PELV
circuits because of the limit on the output voltage.

Sample application

/ 2 " Z

W J Z

Toroidal safety isolating and isolating
transformer

RKD

General Data

Rated input voltage 2 x 115 Vac

Rated output voltage 2 x 6 - 2 x 115 Vac

Power 15 - 3000 VA

Insulation class B

Maximum ambient temperature 40 °C

Efficiency up to 98 %

Degree of protection IP 00

Advantages

Minimum size at high power

Low weight

Double input voltage for series or parallel connection

Minimal no-load losses

Outstanding temperature behaviour thanks to low magnetic leakage field

Very low noise field

Applications

As a mains transformer for adjustment of the voltage and simple electrical
isolation.

As an isolating transformer for the safe electrical isolation of the input and
output sides. The transformer may be used to set up protective separation as a
protective measure in accordance with VDE 0100.

As a safety isolating transformer for the safe electrical isolation of the input
and output sides. The transformer is suitable for creating SELV and PELV
circuits because of the limit on the output voltage.

Sample application

Standards / 2 " Z

Approvals W J Z

UL 5085-1/-2, CSA 22.2 No.66

Toroidal safety isolating and isolating
transformer

RKD

General Data

Rated input voltage 2 x 115 Vac

Rated output voltage 2 x 6 - 2 x 115 Vac

Power 15 - 3000 VA

Insulation class B

Maximum ambient temperature 40 °C

Efficiency up to 98 %

Degree of protection IP 00

Advantages

Minimum size at high power

Low weight

Double input voltage for series or parallel connection

Minimal no-load losses

Outstanding temperature behaviour thanks to low magnetic leakage field

Very low noise field

Applications

As a mains transformer for adjustment of the voltage and simple electrical
isolation.

As an isolating transformer for the safe electrical isolation of the input and
output sides. The transformer may be used to set up protective separation as a
protective measure in accordance with VDE 0100.

As a safety isolating transformer for the safe electrical isolation of the input
and output sides. The transformer is suitable for creating SELV and PELV
circuits because of the limit on the output voltage.

Sample application

Standards / 2 " Z

Approvals W J Z

Mains transformer
to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL
5085-1/-2, CSA 22.2 No.66

UL 5085-1/-2, CSA 22.2 No.66

Toroidal safety isolating and isolating
transformer

RKD

General Data

Rated input voltage 2 x 115 Vac

Rated output voltage 2 x 6 - 2 x 115 Vac

Power 15 - 3000 VA

Insulation class B

Maximum ambient temperature 40 °C

Efficiency up to 98 %

Degree of protection IP 00

Advantages

Minimum size at high power

Low weight

Double input voltage for series or parallel connection

Minimal no-load losses

Outstanding temperature behaviour thanks to low magnetic leakage field

Very low noise field

Applications

As a mains transformer for adjustment of the voltage and simple electrical
isolation.

As an isolating transformer for the safe electrical isolation of the input and
output sides. The transformer may be used to set up protective separation as a
protective measure in accordance with VDE 0100.

As a safety isolating transformer for the safe electrical isolation of the input
and output sides. The transformer is suitable for creating SELV and PELV
circuits because of the limit on the output voltage.

Sample application

Standards / 2 " Z

Approvals W J Z

Mains transformer
to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL
5085-1/-2, CSA 22.2 No.66

Isolating transformer
to: VDE 0570 Part 2-4, DIN EN 61558-2-4, EN 61558-2-4, IEC 61558-2-4,
UL 5085-1/-2, CSA 22.2 No.66

UL 5085-1/-2, CSA 22.2 No.66

Toroidal transformers

1

Toroidal safety isolating and isolating
transformer

RKD

General Data

Rated input voltage 2 x 115 Vac

Rated output voltage 2 x 6 - 2 x 115 Vac

Power 15 - 3000 VA

Insulation class B

Maximum ambient temperature 40 °C

Efficiency up to 98 %

Degree of protection IP 00

Advantages

Minimum size at high power

Low weight

Double input voltage for series or parallel connection

Minimal no-load losses

Outstanding temperature behaviour thanks to low magnetic leakage field

Very low noise field

Applications

As a mains transformer for adjustment of the voltage and simple electrical
isolation.

As an isolating transformer for the safe electrical isolation of the input and
output sides. The transformer may be used to set up protective separation as a
protective measure in accordance with VDE 0100.

As a safety isolating transformer for the safe electrical isolation of the input
and output sides. The transformer is suitable for creating SELV and PELV
circuits because of the limit on the output voltage.

Sample application

Standards

Mains transformer
to: VDE 0570 Teil 2-1, DIN EN 61558-2-1, EN 61558-2-1, IEC 61558-2-1, UL
5085-1/-2, CSA 22.2 No.66

Isolating transformer
to: VDE 0570 Part 2-4, DIN EN 61558-2-4, EN 61558-2-4, IEC 61558-2-4,
UL 5085-1/-2, CSA 22.2 No.66

Safety isolating transformer

to: VDE 0570 Part 2-6, DIN EN 61558-2-6, EN 61558-2-6, IEC 61558-2-6,

Subject to change

218

Approvals

UL 5085-1/-2, CSA 22.2 No.66

+

-

1.2

5.1

1.3

2.1

2.2

3.1

3.2

3.3

5.2

4.0

Transformers

Toroidal transformers

1

Toroidal safety isolating and isolating
transformer

RKD

Typ RKD 500/.. RKD 625/.. RKD 800/.. RKD 1000/..

Input

Rated input voltage 2 x 115 Vac 2 x 115 Vac 2 x 115 Vac 2 x 115 Vac

Rated frequency 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz 50 - 60 Hz

Output

Rated output voltage: Order no.

Rated Power 500 VA 625 VA 800 VA 1000 VA

No-load voltage (app. x factor) 1.04 1.04 1.04 1.02

No-load loss (typ.) 3.40 W 4.90 W 5.30 W 6.50 W

Efficiency 95.0 % 95.0 % 96.0 % 96.0 %

Standards

Classification

Approvals

Approvals cURus cURus cURus cURus

Environment

Ambient temperature max. 40 °C 40 °C 40 °C 40 °C

Safety and protection

Type

Insulation class

Protection index

Safety class (prepared)

Short circuit strength

Test voltage 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz 4000 Vac, 50 Hz

Order numbers

Order Number see rated output voltage see rated output voltage see rated output voltage see rated output voltage

2x24 Vac: RKD 500/2x24
2x30 Vac: RKD 500/2x30
2x35 Vac: RKD 500/2x35

Isolating transformer Isolating transformer Isolating transformer Isolating transformer

Open type Open type Open type Open type

VDE=B, UL=class 105 VDE=B, UL=class 105 VDE=B, UL=class 105 VDE=B, UL=class 105

IP 00 IP 00 IP 00 IP 00

II II II II

non-short-circuit proof non-short-circuit proof non-short-circuit proof non-short-circuit proof

2x30 Vac: RKD 625/2x30

2x115 Vac: RKD 625/2x115

2x40 Vac: RKD 800/2x40

2x115 Vac: RKD 800/2x115

2x50 Vac: RKD 1000/2x50

2x115 Vac: RKD 1000/2x115

1.1

Subject to change

223