נפתחה קריאת שירות אחרי הפסקת החשמל.

נפתחה is the past tense, 3rd person feminine singular form of the verb להיפתח or the Nifal form built from the root פ־ת־ח.

In this sentence, it means something like was opened or got opened.

So:

• פתח = he opened
• נפתח = was opened / opened up
• נפתחה = was opened, agreeing with a feminine singular subject

Because Hebrew usually does not need a separate auxiliary like English was for this kind of passive meaning.

English says:

• A service call was opened

Hebrew can express that inside the verb itself:

• נפתחה = was opened

So the passive-like meaning is built into the verb form, rather than using a separate word equivalent to was.

Because the subject is קריאת שירות, and the head noun there is קריאה, which is feminine singular.

Even though the whole phrase means service call, grammatically the important noun is קריאה:

• קריאה = call, reading, summons
• it is feminine singular

So the verb matches it:

• נפתחה קריאת שירות
• literally: was-opened a service call

Hebrew often allows — and often prefers — verb-first word order, especially in more formal, written, or report-like language.

So:

• נפתחה קריאת שירות אחרי הפסקת החשמל
  is very natural

A subject-first version is also possible:

• קריאת שירות נפתחה אחרי הפסקת החשמל

The difference is mostly about style and focus, not basic meaning. The verb-first version can sound a little more like an event report: first the action, then what it happened to.

קריאת שירות is a construct phrase meaning something like:

• service call
• service request
• support call
• sometimes service ticket, depending on context

It is made of:

• קריאת = construct form of קריאה
• שירות = service

So literally it is a call of service, which English expresses as service call.

Because קריאת is the construct state form of קריאה.

In Hebrew, when one noun is linked to another noun, the first noun often changes form:

• קריאה = a call
• קריאת שירות = a service call

This is a very common pattern in Hebrew.

A few important points:

• the first noun in a construct chain usually cannot take ה
• the relationship between the two nouns is built directly into the phrase

So קריאת שירות is not two separate nouns placed side by side randomly; it is a fixed grammatical structure.

Because in a construct phrase, the first noun normally does not take the definite article ה.

So:

• קריאת שירות = a service call
• קריאת השירות = the service call

Notice what happens:

• the first noun stays in construct form: קריאת
• definiteness is usually shown on the second noun

Since שירות here has no ה, the whole phrase is understood as indefinite.

אחרי means after.

Here it introduces a noun phrase:

• אחרי הפסקת החשמל = after the power outage

This is normal Hebrew usage:

• אחרי
  • noun phrase

If you wanted to say after followed by a full clause, Hebrew often uses:

• אחרי ש־

For example:

• אחרי שהחשמל הופסק... = after the electricity was cut off...

But in your sentence, אחרי is followed by a noun phrase, so אחרי הפסקת החשמל is exactly what you would expect.

This is another construct phrase.

It comes from:

• הפסקה = interruption, stoppage
• חשמל = electricity / power

In construct form:

• הפסקת חשמל = a power interruption
• הפסקת החשמל = the interruption of the electricity / the power outage

Why is the whole phrase definite? Because the second noun is definite:

• החשמל = the electricity

In Hebrew construct chains, definiteness of the whole phrase is usually determined by the last noun. So:

• הפסקת החשמל = the power outage / the electricity outage

Yes, it is basically passive-like or agentless.

The sentence tells you that the service call was opened, but it does not say who did it:

• a customer
• an employee
• a system
• a technician
• a company representative

That is very common in Hebrew. The speaker may not know, may not care, or may simply want to focus on the event itself rather than the person responsible.

Yes.

A more active version could be:

• פתחו קריאת שירות אחרי הפסקת החשמל

This literally means something like:

• They opened a service call after the power outage

But in Hebrew, פתחו can also work like an impersonal they or someone, without naming who did it.

You could also change the word order:

• אחרי הפסקת החשמל נפתחה קריאת שירות
• קריאת שירות נפתחה אחרי הפסקת החשמל

All of these are natural; the choice depends on style, emphasis, and context.