Voltage Control – 3F Control

 

The Mac3 3F Controls are a DIN socket mounted single phase, adjustable under-voltage monitoring and protection relays intended for use in control panels.

Mod.22 is Single Phase.

Mod.33 is three phase with additional phase loss protection.

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3F control 10+

Description

 

Application

The Mac3 3F Controls are a DIN socket mounted, adjustable under-voltage monitoring and protection relays intended for use in control panels.

Mod.22 is Single Phase.

Mod.33 is Three phase with additional phase loss protection.

Advantages

Low voltage leads to increased current and excess heat generation in induction motors causing damage or reducing the life of coils and bearings. Low voltage may be caused by poorly functioning generators, and other temporary power systems, inadequate cable sizing especially temporary wiring or wiring in remote locations such as outbuildings, or poorly specified over-current protection allowing a circuit to be loaded by other appliances beyond it’s proper capacity. Hence under-voltage protection helps to protect important appliances from premature failure avoiding expensive down-time.

Benefits

Both 3F Controls isolate the system if:

  • The system voltage drops up to 2.5% of the set value for more than 2 seconds, or
  • The system voltage drops more than 2.5% of the set value at all.

A 2 second delay, built into the relay, ensures temporary voltage drops in the electricity supply do not trip the system, while preventing potential pump damage should the condition continue.

The 3F Control Mod. 33 also monitors for phase loss and incorrect phase rotation. This can be due to wiring the phases incorrectly or issues arising from the supply itself, but either condition will cause the 3F Control Mod. 33 to isolate the system until the error is rectified.

Additional information

Model:

Mod 22 (1 Phase), Mod 33 (3 Phase)

Mounting

Undecal DIN Socket

Material - Body

Noryl (PPO) UL94 V0

Weight

116g

Dimensions

79x35x88mm

Power Consumption

5VA max

Response Time

2 seconds. Max. Voltage with 2.5% Drop Voltage

Contact Rating / Output Characteristics

AC 2500 VA Resistive Load CosPhi=1
AC 1875 VA Resistive Load CosPhi=0.4
DC300W Resistive Load

Number Of Operations

30 Operations/ Minute Max.

Voltage

300/500V, 180/260V