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Electronic Supplies by Industrial Electronics By Ross LLC in Wisconsin reader of Electronic Components Potter Brumfield P&B Relays Fluke

Industrial Electronics By Ross LLC

Electronic Supplies by Industrial Electronics By Ross LLC in Wisconsin reader of Electronic Components Potter Brumfield P&B Relays Fluke
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Fax : 414-327-0577
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Voltage Monitor Relays

VM Series Over/Undervoltage
Fixed Time Delay on Drop-out

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Over/Under Voltage Relays provide protection to equipment where either 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 VMP 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 VMKP 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 a fixed 500ms for VM Series products. An adjustable time delay on drop-out of 0.5-10 seconds is available (see VA Series).

Current Monitor Relays CUP Series--Under Current
  • Monitors AC single phase and DC voltages
  • Wide range of user-adjustable pick-up and drop-out settings
  • Fixed time delay on drop-out of 500ms
  • LED indicates output relay status
  • Compact plug-in case utilizing industry standard 8 pin octal socket
  • 10A DPDT output contacts

Adjustable Pick-Up, Fixed Drop-Out Settings *
Time Delay on Drop-out Fixed at 500ms
NOMINAL VOLTAGE VOLTAGE l PICK-UP VOLTAGE RANGE DROP-OUT VOLTAGE RANGE PRODUCT NUMBER WIRING/SOCKET
24VAC
120VAC
21-27VAC
102-138VAC
20-26V AC
97-131V AC
VMP024A
VMP120A
8 Pin Octal
70169-D

DIAGRAM 20
12VDC
24VDC
48VDC
110VDC
10-14VDC
21-27VDC
41-55VDC
94-126VDC
9-13V DC
20-26V DC
39-52V DC
89-121V DC
VMP012D
VMP024D
VMP048D
VMP110D
Drop-Out Voltage is fixed at 95% of the Pick-Up Setting.
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Adjustable Pick-Up & Drop-Out Settings **
Time Delay on Drop-out Fixed at 500ms
NOMINAL VOLTAGE VOLTAGE l PICK-UP VOLTAGE RANGE DROP-OUT VOLTAGE RANGE PRODUCT NUMBER WIRING/SOCKET
24VAC
120VAC
21-27VAC
102-138VAC
16-26V AC
77-131V AC
VMKP024A
VMKP120A
8 Pin Octal
70169-D

DIAGRAM 20
12VDC
24VDC
48VDC
110VDC
10-14VDC
21-27VDC
41-55VDC
94-126VDC
8-13V DC
16-26V DC
32-52V DC
71-121V DC
VMKP012D
VMKP024D
VMKP048D
VMKP110D
** Drop-Out Voltage is adjustable from 75-95% of the Pick-Up Setting.



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Operating Modes
Voltage Monitoring 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 de-energized 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.



Application Data
Voltage Monitoring Relays can be used as either overvoltage or undervoltage relays, depending on the output contact used:
Voltage Tolerance
+25%/-50% of nominal voltage; AC voltages are 50-60Hz; No supply (input) voltage is required.

Load (Burden): 3VA.

Voltage Settings
Pick-up: Adjustable from 85-115% of nominal voltage
Drop-out: Fixed at 95% of the pick-up setting (VMP Series)
Adjustable from 75-95% of pick-up setting (VMKP Series)


Temperature:
-28o to 65oC (-20o to 150oF)

Output Contacts:
10A Resistive @ 240VAC/30VDC, 1/2HP @ 240VAC (N.O.), 1/3HP @ 240VAC (N.C.)

Life:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations
Response Times:
Operate: 500ms Release: Fixed 500 ms

Indicator LED: Red when Relay is energized and Green when Relay is Off.

Transient Protection: 10,000 volts for 20 microseconds

Reset: Automatic

Approvals:



Dimensions


Macromatic

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