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Reclosing Time Relay
VL-108


VL-108 - reclosing time relay

VL-108

The single reclosing time relay VL-108 with operational power supply of direct or alternating current is intended for switching of automatic single repeated switching on of lines, buses, the equipment in schemes of automatic equipment in case of their shutdown by protection when damages have unstable character.

Air temperature from minus 40 to plus 55 °C at relative humidity not more than 98% at 25 °C.
Vibration of places of fastening of the relay in the range of the frequencies of (1-100) Hz with acceleration up to 1g and in the range (1-15) Hz with acceleration up to 3g.


VL-108 - chart of functioning of the relay
Chart of functioning of the relay VL-108
(А - correct sequence and duration of action of commands)

Principle of operation

Formation of readiness time begins at previously given supply voltage and at bridging of outputs 1 and 3. After treadiness = 30±5 s the light-emitting diode "Readiness" is lit up and it signals about preparation of the relay for work.

The Start-up command is given on the relay by bridging of outputs 1 and 4. After time of the start-up set by switches (0,5...50s) it dumps the output relay and through time (0,5-0,7s) it will release.

Feature of the VL-108 relay is that the Start-up command passes when the relay is prepared for accepting of this command in available time of treadiness =30±5s. If the Start-up command is given during preparation or before the Readiness command (the light-emitting diode doesn't light up), then the Start-up command won't pass, and the output signal won't appear at the output.

At simultaneous giving of signals "Preparation" and "Start-up" readiness dumping takes place, and start-up won't happen. When giving a signal "Dumping" by bridging of outputs 1 and 5 dumping of readiness takes place and the ban of the Start-up command, and the light-emitting diode "Readiness" will be turned off within 2-3 s after the command "Dumping".

All commands are given in case of switching on of supply voltage.


Sequence of commands (example) Reaction after influence of commands
Output contacts Выходные контакты
7-8, 9-10
1. To set on the switch a time setting and to switch on supply voltage only (contacts 1-11) doesn't light up disconnected contacts
2. To start up command «Readiness» - to connect contacts 1-3
2.1. Time up to 30±5s
2.2. Time more than 30±5s

doesn't light up
light up

disconnected contacts
disconnected contacts
3. To switch off command «Readiness» - to disconnect contacts 1-3 light up disconnected contacts
4. To start up command «Dumping» - to connect contacts 1-5 doesn't light up disconnected contacts
5. To start up command «Readiness» - to connect contacts 1-3
5.1. Time up to 30±5s
5.2. Time more than 30±5s

doesn't light up
light up

disconnected contacts
disconnected contacts
6. To switch off command «Readiness» - to disconnect contacts 1-3 light up disconnected contacts
7. To switch on command «Start-up» - to connect contacts 1-4
7.1. Time is less than setting
7.2. Time is equal to a setting
7.3. Time is more than setting

light up
doesn't light up

doesn't light up

disconnected contacts
connected contacts
within 0,5-0,7 s
disconnected contacts
8. To start up command «Dumping» - to connect contacts 1-5 doesn't light up disconnected contacts
9. To give commands serially: «Start-up», then «Readiness» within 40 s doesn't light up disconnected contacts

Technical characteristics


Power supply, input
Rated supply voltage AC/DC 100, 110, 220 V
Readiness time 30±5s
Power consumption, not more than 5 W
Output
Time of command «Start-up» Тп, (depends on model)
(it is set by two switches)
0,1 - 10; 0,2 - 20; 0,5 - 50 s
Discretization (depends of model) 0,1; 0,2; 0,5 s


VL-108 - scheme of connection
Scheme of connection and outputs placement


VL-104, VL-104А - outside and linkage dimensions
Outside and linkage dimensions of VL-104, VL-104А

When forming the order it is necessary to specify: name and type of the relay; climatic modification and category of placement; rated voltage, type of current and frequency of supply voltage; range of settings of time delay; number of specifications; need of delivery and number of copies of the operation manual.
Example of record of designation of the VL-108 relay at his order and in documentation of other product:
«Time relay VL-108 U3, 220 V, 50 Hz, 0,1-9,9 s»