| Product type |
Purpose |
Protection method |
Operational control of proper operation |
Need for routine maintenance |
Maintaining operability with active methods of influence |
Detection during operation of replacement or damage to the SZ |
All failures that reduce efficient operation are detected during operation. |
Power supply |
Backup power supply operating time (h) |
Current consumption, mA |
Note |
| primary |
backup |
| “Korund” |
Protection of 2-wire
analog TA |
PSZ |
no |
yes |
no |
no |
no |
no |
not required |
— |
|
Certificate available |
| “Granite-8M” |
|
PSZ |
no |
yes |
not fully |
no |
no |
not required |
|
|
|
| “Bouquet” |
— |
PSZ |
no |
yes |
-«- |
no |
no |
and |
— |
|
-«- |
| “Gran-300” |
2-wire
analogue protection TA |
PSZ |
no |
yes |
not fully |
|
|
from subscriber lines |
|
0.1 |
|
| “MP-1 A” |
2-wire protection
analog TT powered from ATS |
PSZ + ASZ |
during dialing |
no |
yes |
yes |
yes, in terms of ASZ, not fully in terms of PSZ |
from subscriber line |
|
<0.4 |
|
| “MP-1 C” |
Protection of 2-wire
digital telephone with power supply from PBX |
PSZ+ ASZ |
by connecting headphones to the subscriber line |
no |
yes |
no |
-«- |
«» |
|
<0,4 |
— |
| “MP-2” |
Protection of 3-program
receivers |
PSZ+ ASZ |
optical |
no |
yes |
yes |
yes |
food 3-program. receiver |
|
<9 |
Under design certificate |
| “MP-3” |
TSPI protection over the network
220V power supply |
PSZ |
not required |
no |
Yes |
no |
no |
-220V |
|
|
|
| “MP-4” |
Secondary clock protection |
ASZ |
optical |
no |
yes |
yes |
TO |
“Crown” |
< 0.06 |
|
-«- |
| “MP-5” |
Loudspeaker protection
of the public address system |
PSZ |
alert signal |
yes |
yes |
yes |
TO |
“Krona” |
< 6 |
|
|
| “MP-6” |
Universal protection device
of 2-wire analog and digital TA with backup
power supply |
PSZ+ ASZ |
optical monitoring of MP and battery discharge |
no |
yes |
yes |
yes, in terms of ASZ, not fully in terms of PSZ |
from subscriber line |
“Krona” |
>1260 |
<0,5 |
|
| “MP-7” |
Device with backup power
for protection of 2-wire digital telephones with
loudspeaker communication |
PSZ + ASZ |
|
no |
yes |
yes |
|
from subscriber line |
“Krona” |
> 900 |
<7 |
Under development |
