Thermal timing relay for communications electronics and onboard equipment. Relay is designed to maintain time delay between switching on filament voltage and switching on anode voltage of high-power electronic tubes. Anode voltage is switched using an intermediate relay.
Main parameters
| Coil power supply frequency, Hz | 400 Hz |
| Power supply voltage, V | 115 |
| Resistance between coil and case, contact springs and case, contact springs, not less than, MOhm in normal conditions after 2 h at maximum temperature after 48 h at relative humidity 95-98% | 300 1 1 |
| Insulation strength (at 50 Hz), V in normal conditions at air pressure 15 mmHg | 100 150 |
| Switching voltage, not more than, V | 120 |
| Contact breaking capacity, not more than, W | 15 |
| Contact resistance, not more than, Ohm | 0.04 |
| Gap between open contacts, mm | 0.7..2.5 |
| Contact compression force, gf | 45..75 |
| Vibration resistance duration, h frequency, Hz acceleration, g | 2 20..200 6 |
| Impact resistance, number of impacts | 10000 |
| Durability, number of cycles | 1000 |
Particular parameters
| Version | DC resistance, Ohm ±2% | Ambient air temperature-based parameters | |||
| Ambient air temperature, oC±2% | Power supply voltage, V | Pick-up time, not less than | Total operating time | ||
| VP4.542.005 | 1425 | +20 | 150* | 2’ | 3’..4’ |
| -60 | 3’..4’30’’ | ||||
| +90 | |||||
*DC
