RM4TG20 TELEMECANIQUE, RM4TG20 Datasheet - Page 17

• Manufacturer Part Number: RM4TG20
• Description: PHASE MONITORING RELAY, DPDT-2CO, 484VAC
• Manufacturer: TELEMECANIQUE
• Series: RM4r

Specifications of RM4TG20

• Contact Configuration: DPCO
• Phase Type: 3 Phase
• Supply Voltage Max: 484VAC
• Switching Voltage Max: 440VAC
• Relay Mounting: DIN Rail
• Length/height, External: 78mm
• External Width: 22.5mm
• External Depth: 80mm
• Carry Current: 8A

3
Characteristics :
page 3/47
References :
page 3/48
Dimensions, schemes :
page 3/49
RM4-T
3/44
Te
Zelio Control - measurement and control relays
3-phase supply control relays RM4-T
Presentation
Functions
These devices are designed to monitor 3-phase supplies and to protect motors and other loads against the faults listed
in the table below.
They have a transparent, hinged flap on their front face to prevent any accidental alteration of the settings. This flap can
be directly sealed.
Monitoring of rotational
direction of phases
Detection of complete failure
of one or more of the phases
Undervoltage detection
Overvoltage and undervoltage
detection (2 thresholds)
Detection of phase asymmetry
(imbalance)
Applications
i Control for connection of moving equipment (site equipment, agricultural equipment, refrigerated trucks).
i Control for protection of persons and equipment against the consequences of reverse running (lifting, handling,
i Control of sensitive 3-phase supplies.
i Protection against the risk of a driving load (phase failure).
i Normal/emergency power supply switching.
Presentation
RM4-TG
R
RM4-TR31.
RM4-TR32
1
2
3
4
R
U
> U Red LED: overvoltage fault
< U Red LED: undervoltage fault
P
R
R
U
>U
<U
P
elevators, escalators, etc.).
Yellow LED: indicates relay output state.
Time delay function selector:
Potentiometer for setting time delay in seconds.
Potentiometer for setting overvoltage as a
direct value.
Potentiometer for setting undervoltage as a
direct value.
Yellow LED: indicates relay state.
Green LED: indicates that supply to the RM4 is on.
Red LED: phase failure or incorrect rotational
direction of phases.
Function performed
Function not performed
Fault detection delayed.
Fault detection extended.
3
4
1
2
RM4-TR33.
RM4-TR34
>U
<U
P
R
U
1
2
RM4-TG
RM4-TU
RM4-TA3
RM4-TU
R
< U Red LED: undervoltage fault.
1
1
2
R Yellow LED: indicates relay state.
U Green LED: indicates that supply to the RM4 is on.
A Red LED: phase asymmetry.
P Red LED: phase failure or incorrect rotational
<U
R
A
P
R
U
Asymmetry threshold setting potentiometer, from 5 to 15 %
Potentiometer for setting time delay, 0.1 to 10 s.
direction of phases.
Yellow LED: indicates relay output state.
Undervoltage setting potentiometer.
1
1
2
RM4-TR
RM4-TA0
R
1
RM4-TA