The Macromatic PMPU-FA8 is a three phase monitor relay. This 8 Pin plug-in relay has a line-line voltage of 190-500V. Voltage can be set between 190-250 for low voltage applications or 380-500 for high voltage use. High or low voltage range is chosen automatically by the relay. It monitors against 5 different types of phase errors and has an output of 10A SPDT. The LED indicator is green under normal operation and red if an error is found. The diagram on top of the relay depicts how the LED will indicate the current status or fault. The PMPU-FA8 uses an 8 Pin 70169-D octal socket.

Monitors For:

Phase Loss
Phase Reversal
Phase Unbalance
Undervoltage
Overvoltage

Specifications

Relay Function- Multi-Detection
Line-Line Voltage- 190-500V AC
Minimum Voltage- 156V AC
Maximum Voltage- 550V AC
Power Consumption- < 40VA
Output- 10A SPDT
Phase Loss- Trips on Phase A, B or C loss
Phase Reversal- Trips if rotation is something other than A-B-C
Phase Unbalance- Fixed at 6% unbalance, Trips when one of the 3 lines diverges from the average by more than the set point for longer than the 4 sec trip delay
Undervoltage- Fixed at 90% of line voltage. Trips when the average of all 3 lines is less than the set point for longer than the 4 sec trip delay
Overvoltage- Fixed at 110% of line voltage. Trips when the average of all 3 lines is greater than the set point for longer than the 4 sec trip delay
Operating Temperature- -28 C to 65 C (-18 F to 149 F)
Storage Temperature- -40 C to 85 C (-40 F to 185 F)
Output Contacts- 10A @ 277V AC / 7A @ 30V DC, 1 HP @ 250V AC, 1/2 HP @ 125V AC, C300 Pilot Duty.
Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
Response Time- Restart: 2 seconds
Phase Loss & Reversal: 100ms
Normal Phase Unbalance: 4 sec
Severe Phase Unbalance: 0.25 sec
Over/Undervoltage: 4 sec
Dimensions- 2.4" Height x 1.7" Width x 3" Depth
Approvals- UL and CUL Recognized, CE, C-UL-US (with Socket)

As with the other phase monitor relays, PMPU-FA8 features "True RMS voltage measurement". This indicates analog to digital sensing circuitry that gives more accurate monitoring of phases and voltages. A great benefit to the PMPU-FA8 is the capability of monitoring all the voltages while indicating the fault, even if a phase is lost. A socket that is rated for 600V should always be used if the system voltage is above 300V. The wide voltage range makes it useful in a larger number of applications. The PMPU-FA8 has a default automatic reset, however manual reset can be implemented by connecting an external N.C. momentary switch to pins 6 & 7. When the voltage is implemented and the phase sequence is right, the relay becomes energized following a restart delay. When an error is detected, the relay is de-energized after a time delay. Under an automatic reset, it restarts once the problem is fixed. This unit differs from the PMPU in that it has fixed response times & settings

Macromatic PMPU-FA8 Relay Installation Manual

Macromatic Three Phase Monitor Relay Comparison Chart

Universal Voltage Macromatic Phase Monitor Relay PMPU-FA8