LOW-VOLTAGES CURRENT TRANSFORMES

For over sixty years we have been providing you with all what you need, working in accordance with the highest standards. Every day thousands of our clients all over the world get our safe and user-friendly products. It wouldn’t be possible without power and skills of our best specialists. We remember about every single detail

GeneraL oVerVieW of Current transformers CUrrenT TrAnSFormer is used for measurement of electric alternating currents. When current in a circuit (primary current) is too high to directly applyto measuring instruments, a current transformer produces a reduced current (secondary current) accurately proportional to the current in the circuit, which can be conveniently connected to measuring and recording instruments. A current transformer also isolates the measuring instruments from what may be very high voltage in the monitored circuit. Relationship between primary and secondary currents is called...

GeneraL oVerVieW of Current transformers Power requirements for measuring apparatur and relays: • Analog moving-iron meters 0.7 – 1.5VA • Rectifier current meters 0.001 – 0.250 VA • Multi-range current meters 0.005 – 5.000 VA • Current recorders 0.300-9.000 VA • Bimmetalic ammeters 2.5 – 3.0 VA • Power meter 0.2 – 5.0 VA • Power factor meter 2.0 – 6.0 VA • Meters 0.4 – 1.0 VA • Relays 0.2 – 6.0 VA • Power transducers 0.5 VA • Energy meters 2.5 VA Internal losses of copper wiring: ConneCtion DiaGramm of Current transformers Where: I – Secondary nominal current, L – Distance in [m], qCU – wire...

LCTB - busbar series

LCTM - WOUND PRIMARY SERiES LCTM 62/W (40) LCTM 62W040 G D D D D D ODGDG ORDERING CODESLCTM 74W045 DD DDDD Secondary current Secondary current ACCESSORIES: DIN rail mounting base Order code: LH000-0904-130-124 Ordering example: Order code LCTM 62W0400030A55 means the transformer LCTM 62/W(40) 30/5A; Class 0.5; power 2.5VA

INPUT: OUTPUTS: DIMENSIONS ORDERING CODES Transformer type Transformer type Accuracy class rated primary current 30 A 40 A 50 A 60 A 75 A 80 A 100 A 120 A 125 A 150 A 200 A 250 A 300 A Rated primary current 40 A 50 A 60 A 75 A 80 A 100 A 120 A 125 A 150 A 200 A 250 A 300 A ordering example: Order code LCTR 4514400100A55 means the transformer LCTR 45/14(40) 100/5A meeting the requirements of the class: • kl. 0.5 1 .5 VA

ORDERING CODES □□□□□□□ Secondary current Secondary current * The custom value of the nominal power, which should be given when ordering the transformer. Ordering example: Order code LCTR 5014500100A55 means the transformer LCTR 50/14(50) 100/5A meeting the requirements of the class: • kl. 0.5 3 .75 VA ACCESSORIES: DIN rail mounting base - for details see page 46

Ordering example: Order code LCTB 4521400100A55 means the transformer LCTB 45/21(40) 100/5A meeting the requirements of the class: • kl. 0.5 1.5 VA • kl. 1 3.75 VA • kl. 3 3.75 VA ACCESSORIES: DIN rail mounting base Order code: LH000-0904-130-002

INPUT: OUTPUTS: LCTB 50/21 (30) ORDERING CODES Secondary current Secondary current Ordering example: Order code LCTB 5021300100A55 means the transformer LCTB 50/21(30) 100/5A meeting the requirements of the class: kl. 0.5 1.5 VA; kl. 1 2.5 VA; kl. 3 3.75 VA * The custom value of the nominal power, which should be given when ordering the transformer.

ORDERING CODES Ordering example: Order code LCTB 5021500100A55 means the transformer ACCESSORIES: LCTB 50/21(50) 100/5A meeting the requirements of the class: DIN rail mounting base

INPUT: OUTPUTS: ORDERING CODES

LCTB 62/30 (50) ORDERING CODES Secondary current Secondary current * The custom value of the nominal power, which should be given when ordering the transformer. Ordering example: Order code LCTB 6230500100A55 means the transformer ACCESSORIES: LCTB 62/30(50) 100/5A meeting the requirements of the class: DIN rail mounting base

INPUT: OUTPUTS: ORDERING CODES Ordering example: Order code LCTB 7420450100A55 means the transformer LCTB 74/20(45) 100/5A meeting the requirements of the class: kl. 0.5 - 5 VA; kl. 1 - 7.5 VA ; kl. 3 - 10 VA

ORDERING CODES * The custom value of the nominal power, which should be given when ordering the transformer. ACCESSORIES: DIN rail mounting base Order code: LH000-0904-130-124 Ordering example: Order code LCTB 7450450300A55 means the transformer LCTB 74/50(45) 300/5A meeting the requirements of the class: kl. 0.5 - 5 VA; kl. 1 - 7.5 VA; kl. 3 - 7.5 VA

INPUT: OUTPUTS: LCTB 86/50 (45) LCTB 86/60 (45) ORDERING CODES Ordering example: Order code LCTB 8640450100A55 means the transformer LCTB 86/40(45) 100/5A meeting the requirements of the class: • kl. 0.5 1.5 VA

Secondary current Ordering example: Order code LCTB 8650450300A55 means the transformer LCTB 86/50(45) 300/5A meeting the requirements of the class: ACCESSORIES: DIN rail mounting base Order code: LH000-0904-130-124

INPUT: OUTPUTS: ORDERING CODES LCTB 100130 Secondary current Secondary current Transformer type Accuracy class Code LCTB 100/130V (45) 0.2 rated primary current 400 A 500 A 600 A 750 A 800 A 1000 A 1200 A 1250 A 1500 A 1600 A 2000 A 2500 A 3000 A Transformer burden Code 5 VA 5 VA 5 VA 5 VA 5 VA ordering example: Order code LCTB 1001001500A55 means the transformer LCTB 100/100V(45) 1500/5A meeting the requirements ofthe class: kl. 0.5 - 15 VA; kl. 1 - 30 VA ; kl. 3 - 30 VA

ACCESSORIES: DIN rail mounting base Order code: LH000-0904-130-124

Secondary current Secondary current Ordering example: Order code LCTB 1408041500A55 means the transformer LCTB 140/80(45) 1500/5A meeting the requirements of the class: kl. 0.5 - 60 VA; kl. 1 - 60 VA ; kl. 3 - 60 VA

ORDERING CODES Secondary current Secondary current Ordering example: Order code LCTB 14010V1000A55 means the transformer LCTB 140/100V(45) 1000/5A meeting the requirements of the class: • kl. 0.5 15 VA

Ordering example: Order code LCTB 2251251500A55 means the transformer LCTB 225/125(50) 1500/5A meeting the requirements ofthe class: kl. 0.5 - 15 VA; kl. 1 - 30 VA ; kl. 3 - 30 VA