OUT OF PRODUCTION
We carry out repair and supply of PVZ (IVA) blocks.
![Equipment HF protection](/wp-content/uploads/2017/02/f800adbb488216e1cb1d8d8a4f487dfb.png)
Function
High freguency (HF) transceiver of protection type PVZ is designate for transmitting and receiving signals protection high frequency channel formed by wire voltage overhead power lines 35 - 1150 kV.
PVZ equipment works in conjunction with the differential-phase protection of all types, distance and directional protection from high freguency lock, made on the basis of electromechanical relays and semiconductor protection based on semiconductor elements.
- - transmission and reception of blocking signals;
- - periodic periodic monitoring of the stock on the damping channel of communication and health output circuits of the receiver (once in 16 minutes);
- - attenuation introduced by the transceiver path by 75 ohms, at parallel accession no more than 1 dB;
- - digital receiver with programmable output amplitude-frequency response and signal suppression "own" transmitter in the range of 2.5 to 7.5 dB;
- - ability to signal suppression parent transmitter in three-ended channel withfrequency spaicing of up to ±1kHz;
- - providing telephone communications between points during its commissioning.
Characteristic | Value |
Frequency band
|
36...600 kHz
|
Power supply voltage | -220/110 V |
Rated power high frequency oscillation at the transceiver output on resistive load
(75±15) ohms at a supply voltage 220/110 V ±10/20% of the nominal value
|
30 W |
Power input at high frequency oscillation at the transmitter output (max)
|
80 W |
Power input at standby mode (max)
|
30 W |
Adjustment power output transmitter
|
2...30 W |
Step selectable frequency transmitter at all frequencies
|
0,25 kHz |
Receiver sensitivity
|
100...2800 mW |
Receiver selectivity
|
50 dB |
Dimensions
|
560х280х260 mm |
Weight
|
19 kg |
![](/wp-content/uploads/2017/02/PRM.png)
- microcontroller unit by automatic control software compatible with other posts HF protection, such as AVZK-80, PVZ-90M, PVZU-E and others;
When ordering, specify the exact positions PVZ frequency reception, transmission and auto-control option will speed up the execution of the task.