Documentation
Datasheets, operating manuals and instructions for our products.
Digital panel meters
- Short datasheet for ИЦ401, ИЦ402, ИЦ403, ИЦ412PDF, 138 KB
- Replacing 132×132 and 172×172 panel-mount moving-coil instruments with digital panel instruments made by NPP "VEL"wel.net.ua
- Short datasheet for three-phase voltmeter ИЦ404PDF, 120 KB
- Datasheet for voltage and current indicator ИЦ412PDF, 138 KB
- Datasheet for combined power meter ИЦ409PDF, 274 KB
- Test report for the ИЦ409 combined power meterwel.net.ua
- Short datasheet for РН400, РТ400PDF, wel.net.ua
- Programming instructions for voltage relay РН400PDF, wel.net.ua
- Programming instructions for current relay РТ400PDF, 104 KB
- Datasheet for pulse counter ИЦ405PDF, 207 KB
- Datasheet for tap-position indicator (РПН) ИЦ407PDF, 134 KB
- On-load tap-changer position indicator (ratiometer) with selsyn sensor ИЦ407СPDF, 828 KB
- Datasheet for panel-mount AC mains frequency meter Ц406СPDF, 312 KB
- Datasheet for frequency meter and tachometer ИЦ406PDF, 124 KB
Time relays
- Datasheet for sequence controller РВ4БPDF, 168 KB
- Datasheet for time relay РВ4 (PDF)PDF, wel.net.ua
- Datasheet for the КВ1.1 stairwell-switch time relay (PDF)PDF, wel.net.ua
- Datasheet for stairwell switch КВ1 (PDF)PDF, wel.net.ua
- Overview: automatic lighting controlPDF, wel.net.ua
- An article on where КВ-1 is used: “Investing in energy saving today brings you not only your own economic benefit — it strengthens the country’s energy security”DOC, wel.net.ua
- Zorya automated street lighting control systemPDF, wel.net.ua
- On connecting КВ-1 stairwell switches in parallel to drive a common load.PDF, wel.net.ua
- Datasheet for time relay РВ5 (PDF)PDF, 73 KB
- Datasheet for time relay РВ1 (PDF)PDF, 132 KB
- Datasheet for time relay РВ2 (PDF)PDF, 121 KB
- Datasheet for time relay РВ3 (PDF)PDF, 152 KB
- Using time relay РВ3 to obtain an off-delay functionPDF, 34 KB
24 h time switches
- Datasheet for time switches СР21, СР22, СР23PDF, 217 KB
- Programming instructions for time switch СР21PDF, 49 KB
- Programming instructions for weekly time switch СР22PDF, 44 KB
- Programming instructions for annual time switch СР23PDF, 49 KB
- Reprogramming instructions for annual time switch СР23PDF, 156 KB
- Datasheet for lighting control switch СР25PDF, 220 KB
- Programming instructions for СР25PDF, 52 KB
- Datasheet for energy-saving lighting control switch СР26PDF, 224 KB
- Datasheet for time switches СР30, СР31, СР32PDF, 58 KB
- Datasheet for energy-saving time switch СР24PDF, 222 KB
- Programming instructions for energy-saving time switch СР24PDF, 48 KB
Voltage relays
- Short datasheet for РН400, РТ400PDF, wel.net.ua
- Programming instructions for voltage relay РН400PDF, wel.net.ua
- Replacing 132×132 and 172×172 panel-mount moving-coil instruments with digital panel instruments made by NPP "VEL"wel.net.ua
- Datasheet for voltage relays РН1, РН2 (PDF)PDF, wel.net.ua
- Datasheet for voltage relays РН1.24, РН2.24 (PDF)PDF, wel.net.ua
- Programming instructions for voltage relay РН1PDF, wel.net.ua
- Single-phase ATS diagram using РН1PDF, wel.net.ua
- A supply scheme for a three-phase load with one phase backed up, built on the РН1 voltage relaywel.net.ua
- Programming instructions for current relay РТ400PDF, 104 KB
Photorelays
- Datasheet for photorelays ФР101, ФР102PDF, 353 KB
- Overview: automatic lighting controlPDF, 121 KB
- Zorya automated street lighting control systemPDF, 40 KB
Relays
- Programming instructions for current relay РТ400PDF, 104 KB
- Short datasheet for РН400, РТ400PDF, wel.net.ua
- Replacing 132×132 and 172×172 panel-mount moving-coil instruments with digital panel instruments made by NPP "VEL"wel.net.ua
- Datasheet for seismic-qualified electronic indicating relays РЭУ11МPDF, 352 KB
- Datasheet for thermal relay РТ4010PDF, 300 KB
- Operating manual for thermal relay РТ4010PDF, 258 KB
Solid-state relays
КВ stairwell switches
- Datasheet for the КВ1.1 stairwell-switch time relay (PDF)PDF, wel.net.ua
- Datasheet for stairwell switch КВ1 (PDF)PDF, wel.net.ua
- Overview: automatic lighting controlPDF, wel.net.ua
- An article on where КВ-1 is used: “Investing in energy saving today brings you not only your own economic benefit — it strengthens the country’s energy security”DOC, wel.net.ua
- Zorya automated street lighting control systemPDF, wel.net.ua
- On connecting КВ-1 stairwell switches in parallel to drive a common load.PDF, wel.net.ua
БУАВР control units
- БУАВР.1 operating manualPDF, wel.net.ua
- БУАВР.2C operating manualPDF, wel.net.ua
- БУАВР.М operating manualPDF, 395 KB
- БУАВР.ЭА operating manualPDF, wel.net.ua
- БУАВР.К operating manualPDF, wel.net.ua
Switchboard equipment
Voltage converters
- Datasheet for БАОPDF, 347 KB
- БАО.П passportPDF, 204 KB
- ЗУ.240В.5А operating manualPDF, 253 KB
- Datasheet for auxiliary power supply ИВЭ-1PDF, 190 KB
- БЖ400М passportPDF, 151 KB
- Datasheet for БЖ600МPDF, 162 KB
- Operating manual for voltage converter ПП110МPDF, 60 KB
- Passport for voltage converter ПП35МPDF, 168 KB
Single-phase off-grid inverters
Three-phase off-grid inverters
- Operating manual for inverter 30 kVA 240 VDC 220/380 VACPDF, 706 KB
- Operating manual for inverter 30 kVA 240 VDC 220/380 VAC SYNCHR ATS STS BYPASSPDF, 706 KB
- Datasheet for the three-phase inverterPDF, 150 KB
- Operating manual for inverter 50 kVA 240 VDC 220/380 VAC SYNCHR ATS STS BYPASSPDF, 662 KB
- Operating manual for inverter 50 kVA 360 VDC 220/380 VAC SYNCHR ATS STS BYPASSPDF, 609 KB
Grid-tie inverters
Monitoring, control, automation
- Datasheet for the RC snubber networkPDF, 397 KB
- Technical overview of the RC snubber networkPDF, 2.9 MB
Process equipment
- Datasheet for the vacuum casting unit.PDF, 263 KB