2277048 Datasheet 2277048 | P25-P27

PACT Analog

103359_en_03 PHOENIX CONTACT 25

7.1 Installing a current transformer

The current transformers can be installed in the following mounting positions:

1. Vertically on the copper rail

In most applications, the current transformer is fitted directly

onto the copper rail.

• Slide the current transformer over the copper rail.

• Slide the primary rail support through the inner hole of

the current transformer (A).

• Insert the two screws on the left and right of the

transformer into the holes of the primary rail support until

they reach the copper rail and the pressure is such that

the current transformer is fixed in place (B).

• Attach the protective caps for protection against

accidental contact to the screw heads (C).

2. Vertically on the mounting plate

Two plug-in feet are included as standard accessories (see

page 21).

• Insert the plug-in feet underneath the transformer on the

right and the left (A).

• Place the current transformer on the mounting plate (B).

• Insert the screws through the openings of the plug-in feet

to secure the current transformer (C).

103359A003

103359A004

PACT Analog

103359_en_03 PHOENIX CONTACT 26

3. Vertically on the DIN rail

The current transformer can also be snapped onto the DIN

rail with the optional snap-on mounting (see page 21).

• Snap the snap-on mounting into the holes beneath the

current transformer (A).

• Snap the current transformer onto the DIN rail (B).

4. Horizontally on the copper rail

As a result of their flat shape, the Phoenix Contact current

transformers can also be fitted horizontally onto copper rails,

e.g., behind fuse rails.

This is possible with the following current transformer types:

– MCR-V2-5012-85... (see page 7)

– MCR-V2-3015-60... (see page 5)

– MCR-V1-21-44... (see page 4)

• Insert a suitable copper sleeve (see page 21) into the

inner hole of the current transformer (A) to create a

conductive connection between the copper rail and the

fuse.

• Attach the extended secondary terminal cover to the

secondary terminals (B) to increase the air and

creepage distances when the current transformer is

installed horizontally.

103359A005

103359A006

PACT Analog

103359_en_03 PHOENIX CONTACT 27

7.2 Connecting a current transformer

Figure 1 Example connection with PACT MCR-V1-21-

44-...

The connections of the primary winding are designated as

"K" and "L" or "P1" and "P2". The connections of the

secondary winding are designated as "k" and "l" or "s1" and

"s2". Pole the cables so that the power flows from "K" to "L".

Figure 2 Power flow direction

8 Calibrating the current transformers

Calibrated current transformers are identified by a yellow

sticker:

Figure 3 Example stamp of a nationally recognized test

center

A PTB (Physikalisch-Technischen Bundesanstalt) approval

mark is also applied:

Figure 4 Example PTB (Physikalisch-Technischen

Bundesanstalt) approval mark

Each calibrated current transformer is provided with a corresponding calibration certificate.

103359A001

s1 s2

103359A002

Consecutive number

Calibration mark of a test center

Year

20.21

01.03

Calibration regulations,

appendix 20

Identification of the

measuring transducer type

Approval year Consecutive number

The calibration process involves additional costs, which are specified in accordance with the national table of fees.

These depend on the maximum rated input current of the current transformer.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P27 P28-P28

2277048

Mfr. #:

Buy 2277048

Manufacturer:

Phoenix Contact

Description:

Current Transformer Sensors Current Transformers PACT MCR-V1-21- 44-250-5A-1

Lifecycle:

New from this manufacturer.

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2277048