How many volts is needed to power a coil
Well, I will try to translate this Russian text at least to justify my Slavic name Cyril:) By the way, Russian is very close to my Bulgarian.
Тисо-Продакшин is Tiso-Production - maybe the producer
EМ-87 - I don't know what it is... maybe 87 is the year
Rобм is Rcoil (&quot;обмотка&quot; is &quot;coil&quot;), i.e. this is the coil resistance = 23 Ohm
W = 1520вит. means W = 1520 turns (&quot;витка&quot; is &quot;turn of winding&quot;)
ПЭТВ-2. 0,415 describes the copper wire:
Wire Enameled ...  0,415 probably means 0.415 mm diameter of the wire

Tips:

Do not hold the coil terminals when switching the voltage on and off. Do you have any idea what &quot;self-induction&quot; is?

Increase the voltage and apply it for a short time (1 ÷ 2 seconds). Basically, the coil is a voltage integrator so the current increases gradually starting from zero... but this can be observed at higher inductances.

As a last resort, watch for heat and odor.