Connex-Electronics.com
Macromatic
Macromatic Voltage Monitor Relays - VA Series Over/Undervoltage (Adjustable Time Delay on Drop-Out)

Macromatic Voltage Monitor Relays - VA Series Over/Undervoltage (Plug-In)
   
Over/Under Voltage Relays provide protection to equipment where an over or under voltage condition is potentially damaging. They are designed to operate when the operating voltage reaches a preset value and drop-out when the operating voltage drops to a level below the preset value.

The pick-up voltage setting is user-adjustable from 85-115% of the nominal voltage rating. As standard, the VAP Series has a drop-out voltage setting fixed at 95% of the pick-up voltage setting. An adjustable drop-out setting of 75-95% of the pick-up setting is available on the VAKP Series. The relay energizes when the monitored voltage is above the pick-up setting. The relay de-energizes when the monitored voltage is below the drop-out setting for a period longer than the drop-out time delay (t), which is adjustable from 0.5-10 seconds for VA Series products.
Macromatic VA Series
Approvals Approvals Approvals
 
OPERATING MODES:
These relays can be used as either overvoltage or undervoltage relays, depending on the output contact used.
 
Overvoltage Relay: Provides protection to equipment that cannot handle excess voltages. Uses a normally closed contact (N.C.). As long as the monitored voltage remains below the maximum voltage the equipment can withstand (Pick-Up Setting), the relay remains deenergized and the N.C. contact remains closed, keeping the load energized. If the operating voltage increases beyond the maximum rating of the equipment, the relay energizes and the N.C. contact opens, turning off the load. When the voltage falls below the Drop-Out Setting (hysteresis), the relay de-energizes and the N.C. contact re-closes, turning on the load.   Undervoltage Relay: Provides protection to equipment that is required to operate above a certain minimum voltage. Uses a normally open contact (N.O.). As long as the monitored voltage is above the minimum value required (Pick-Up Setting), the relay will energize and the N.O. contact closes, turning on the load. If the voltage drops below the Drop-out Setting (the minimum voltage required minus the hysteresis), the relay will de-energize and the N.O. contact will re-open, turning off the load.
   
Features:
  • Monitors AC single phase and DC voltages
  • Wide range of user-adjustable pick-up and drop-out settings
  • Adjustable time delay on dropout of 0.5 - 10 seconds
  • LED indicates output relay status
  • Compact plug-in case utilizing industry standard 8 pin octal socket
  • 10A DPDT output contacts
VM Series Graph
 
Click here for specifications and dimensions in .pdf format PDF
 
Adjustable Pick-Up, Fixed Drop-Out Settings Adjustable Time Delay on Drop-out from 0.5 - 10 Seconds
Part Number Nominal Voltage Pick-Up Voltage Range Drop-Out Voltage Range Wiring / Socket
Add part number VAP024A to your Quote. VAP024A 24V AC 21-27V AC 20-26V AC Diagram 20
Add part number VAP120A to your Quote. VAP120A 120V AC 102-138V AC 97-131V AC
Add part number VAP012D to your Quote. VAP012D 12V DC 10-14V DC 9-13V DC
Add part number VAP024D to your Quote. VAP024D 24V DC 21-27V DC 20-26V DC
Add part number VAP048D to your Quote. VAP048D 48V DC 41-55V DC 39-52V DC
Add part number VAP110D to your Quote. VAP110D 110V DC 94-126V DC 89-121V DC
*Drop-out Voltage is fixed at 95% of the adjusted Pick-up Setting.
 
Adjustable Pick-Up & Drop-Out Settings Adjustable Time Delay on Drop-out from 0.5 - 10 Seconds
Part Number Nominal Voltage Pick-Up Voltage Range Drop-Out Voltage Range Wiring / Socket
Add part number VAKP024A to your Quote. VAKP024A 24V AC 21-27V AC 16-26V AC Diagram 20
Add part number VAKP120A to your Quote. VAKP120A 120V AC 102-138V AC 77-131V AC
Add part number VAKP012D to your Quote. VAKP012D 12V DC 10-14V DC 8-13V DC
Add part number VAKP024D to your Quote. VAKP024D 24V DC 21-27V DC 16-26V DC
Add part number VAKP048D to your Quote. VAKP048D 48V DC 41-55V DC 32-52V DC
Add part number VAKP110D to your Quote. VAKP110D 110V DC 94-126V DC 71-121V DC
**Drop-out Voltage is adjustable from 75-95% of the adjusted Pick-up Setting.
 
Voltage Tolerance: +25%/-50% of nominal voltage; AC voltages are 50-60Hz; No separate supply (input) voltage is required.
Load (Burden): Less than 3VA
Voltage Settings: Pick-up: Adjustable from 85-115% of nominal voltage
Drop-out: Fixed at 95% of pick-up setting (VAP) Adjustable from 75-95% of pick-up setting (VAKP)
Temperature: -28° to 55°C (-18° to 131°F)
Output Contacts: 10A @ 240V AC/30V DC, 1/2HP @ 120/240V AC (N.O.), 1/3HP @ 120/240V AC (N.C.)
Life: Mechanical: 10,000,000 operations
Full Load: 100,000 operations
Response Times: Operate: 500ms
Release: Adjustable 0.5 - 10 Seconds (VAK & VAKP Series)
Indicator LED: Red Steady when Relay is energized; Green when Relay is Off.
Transient Protection: 10,000 volts for 20 microseconds
Reset: Automatic