Evirici çift yönlü sayaca bağlandı.

A word-by-word breakdown is:

• evirici = converter / inverter
• çift yönlü = bidirectional, literally double-directioned or two-way
• sayaca = to the meter/counter
• bağlandı = was connected / got connected

So the sentence means something like:

• The inverter was connected to the bidirectional meter.
• Depending on context, it can also feel like The converter got connected to the bidirectional meter.

Because it is a descriptive phrase made from two parts:

• çift = double, pair, two
• yönlü = directional, having direction(s)

Together, çift yönlü means two-way or bidirectional.

In Turkish, many adjective phrases are written as separate words even when English often uses a hyphenated form. So English bidirectional meter corresponds naturally to Turkish çift yönlü sayaç.

Because the noun is in the dative case, which often means to or toward.

• Base form: sayaç = meter / counter
• Dative ending: -(y)e / -(y)a
• So: sayaç → sayaca = to the meter

There is also a sound change here:

• Final ç often becomes c when a vowel-initial ending is added.
• So sayaç + a becomes sayaca, not sayaça.

This is a very common pattern in Turkish:

• ağaç → ağaca
• ilaç → ilaca
• sayaç → sayaca

Yes, this form is commonly understood as a passive/result form here.

The verb comes from bağlamak = to connect / tie / attach.

From that, Turkish gets bağlanmak, which can mean:

• to be connected
• to get connected
• sometimes to be attached

So:

• bağlandı = was connected / got connected

Structure:

• bağlan- = passive/intransitive form related to connect
• -dı = past tense

In technical or formal writing, this kind of wording is very common.

-dı / -di / -du / -dü / -tı / -ti / -tu / -tü is the Turkish definite past tense ending.

It shows that the action happened in the past.

So:

• bağlanıyor = is being connected / is getting connected
• bağlandı = was connected / got connected
• bağlanacak = will be connected

In bağlandı, the ending appears as -dı because of vowel harmony and consonant assimilation.

Turkish normally puts the verb at the end of the sentence.

So the structure is:

• Evirici = subject
• çift yönlü sayaca = to the bidirectional meter
• bağlandı = verb

Literally, the order is:

• The inverter to-the bidirectional meter connected-was

Natural English reorders that as:

• The inverter was connected to the bidirectional meter.

This verb-final pattern is one of the most important differences between Turkish and English.

Yes, in this sentence evirici is the thing being connected, so it functions as the subject of bağlandı.

Because sayaca has the dative ending -a, it clearly means to the meter, not the subject.

So the sentence is not saying that the meter connected something. It is saying that the inverter was connected to the meter.

Yes. In English, Turkish passive-like forms often translate in more than one natural way.

So bağlandı may be understood as:

• was connected
• got connected
• became connected

Which one sounds best depends on context:

• technical report: was connected
• process description: got connected
• system status: became connected

All are close in meaning here.

Turkish does not have a direct equivalent of the English article the.

So:

• evirici can mean converter, the converter, or even an inverter, depending on context.
• çift yönlü sayaca can mean to a bidirectional meter or to the bidirectional meter.

Usually the context makes it clear. In a technical sentence like this, English often uses the, but Turkish simply does not need a separate word for it.

Yes, sayaç literally often means counter, but in technical contexts it can also mean meter, especially for measuring usage such as electricity, water, or gas.

So depending on context:

• sayaç = counter
• elektrik sayacı = electricity meter
• çift yönlü sayaç = bidirectional meter

This is why the sentence sounds natural in an electrical or engineering context.

Yes.

The dictionary/base form is:

• çift yönlü sayaç = bidirectional meter

In the sentence, it becomes:

• çift yönlü sayaca = to the bidirectional meter

So if you look up the noun, you would look for sayaç, not sayaca.

Yes. A few alternatives are possible, depending on style:

• Evirici, çift yönlü sayaca bağlandı.
  Same meaning, just with a comma for pause.

• Evirici çift yönlü sayaçla bağlandı.
  This would mean something different: The inverter was connected with/by means of the bidirectional meter, so it is usually not what is meant here.

• Evirici çift yönlü sayaca bağlanmıştır.
  More formal: The inverter has been connected to the bidirectional meter.

So for the meaning was connected to the bidirectional meter, sayaca bağlandı is the natural choice.