Near Field Communication and
conventional Control Relays
schneider-electric.com
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General contents
Zelio Control Relays
b General Presentation ............................................................................... page 2
- Electrode holders and probes .............................................................. page 70
b Product reference index ........................................................................ page 72
1
General presentation
Zelio Control Relays
Near Field Communication and conventional
Control Relays
Zelio Control Relays
Zelio Control relays monitor and detect abnormal operating conditions concerning
phase, current, voltage, frequency, speed, or temperature. The relays inform users
of abnormal conditions, and allow them to initiate the necessary corrective actions
before serious and costly breakdowns can occur. By monitoring energy network
statuses, they enable both electrical and mechanical load control.
RM17T, RMNF22, RM35L, RM17J Zelio Control Relays
They are suitable for a wide range of applications:
b Hoisting: construction cranes, harbor cranesb Packaging: motor voltage, current overloadb Lifts: construction lifts, passenger lifts, escalatorsb Textile: motor voltage, current overloadb Water: liquid level on water tank at water and waste water recycling plant
Depending on the product model, control relays are categorized into 8 product
families:
b 3-phase controlb Current controlb Voltage controlb Frequency controlb Speed controlb Lift temperature controlb Level controlb Pump control
Zelio Control relay functions
Monitoring
Control relays monitor physical and electrical values. They measure variable signals
such as phase (presence, sequence and symmetry), voltage, current, and
frequency. They also control liquid levels and process operating rates.
Informing
Control device outputs provide users with electrical information. In addition, setting
faults are signaled by simultaneous ashing of all LEDs.
Protecting
Integrated in the control circuits of automated systems, they enable automatic
shutdown management and provide fault information, thus protecting the equipment.
Managing
When the power is switched on, the control relays are inhibited to enable correct
measurement circuit setting. The outputs operate with positive logic, the contact or
contacts being closed under normal conditions and opening as soon as a fault or
power supply loss is detected.
Commissioning
When the diagnostic button is used, the downstream circuit can be closed
immediately without sending a fault input signal to the relays. This shortens the
testing time during commissioning and troubleshooting.
Zelio Control A simple approach to monitoring your equipment
2
General presentation
(continued)
Zelio Control Relays
Near Field Communication and conventional
Control Relays
Zelio Control relays with unique design and features
> Compact modular sizes: 17.5 mm/0.69 in., 22.5 mm/0.88 in., 35 mm/1.38 in.> Adapted for industrial and building control panels> True RMS measurement that minimizes the possibility of unexpected trips from
highly polluted networks (except RM17TG and RM22TG)
> Diagnostic button to check the downstream circuit immediately and reduce
Inhibition time delay upon
startup 1…60 s
Time delay 0.1…10 s
120…277 V a 24…240 V z24…240 V z24…240 V z
0.1…10 sInhibition time delay upon
startup 0.6…60 s
1…10 s
RM35ATW5MW
RM35ATR5MW
More technical Information on www.se.comMore technical Information on www.se.com
1011
98
Presentation,
description
RM17TG00
Zelio Control Relays
3-phase supply control relays
RM17TG
Presentation
RM17TGp0 measurement and control relays for 3-phase supplies monitor the
correct sequencing of phases L1, L2, and L3 and the total loss of two or more of
these phases.
FunctionsRM17TG
Sequence of phases L1, L2, and L3
Phase loss
Function performed
Function not performed
Depending on the model, RM17TG control relays:
b Accept dierent nominal 3-phase voltage valuesv 208…480 V a for RM17TG00v 208…440 V a for RM17TG20b Are designed for clip-on mounting on a 5 rail
The control status is indicated by an LED.
Applications
b Control for connection of moving equipment (site equipment, agricultural
equipment, refrigerated trucks)
b Control against reverse motor operation (lifting, handling, elevators,
escalators, etc.)
b Control of sensitive 3-phase suppliesb Emergency power supply switching in abnormal conditions
L1 L2 L3
R
12 11 14
RM17TG00
R Yellow LED: indicates relay output status
1
L1 L2 L3
24 21 22
R
12 11 14
1
RM17TG20
Description
RM17TG00 , RM17TG20
1 Spring for clip-on mounting on 35 mm/1.38 in.5 rail
12
Operation,
100%
100V
100V
100V
0%
100%
0%
100%
0%
R - R1/R2
Tr
Tr
Tr
TrTr
L3
L2
Phase L1
Phase L2
Phase L3
Relays
references
Operating principle
3-phase supply control relays monitor:
b Correct sequencing of phases L1, L2, and L3b Fault signaling by LEDsb Total loss of two or more of the phases
RM17TGp0
Phase control
v Sequence of phases L1, L2, and L3
v Phase loss
Zelio Control Relays
3-phase supply control relays
RM17TG
Function Diagram
Output 11-14, 21-24 open
Output 11-14, 21-24 closed
The relays monitor:
b That the phase sequence and voltages are correct (> 183 V), the output relay(s)
is/are closed and the yellow LED is on.
b If a sequencing fault or total loss of two or more phases is detected (detected as
soon as two of the voltages drops below 100 V), the relay opens instantly and the
LED goes o.
b On energization of the device with a detected measured fault, the relay stays
open.
Note: Tr: response time on detection of a fault
References
PF153400B
RM17TG00RM17TG20
PF153401A
FunctionRated 3-phase
b Phase sequenceb Phase loss
supply voltage
Vkg/lb
208…480 a1 CO 5 ARM17TG000.080/
208…440 a2 CO 5 ARM17TG200.085/
OutputReferenceWeight
0.176
0.187
13
Presentation,
L1N L2 L3
description
RMNF22
Zelio Control Relays
Multifunction 3-phase control relays
RMNF22
Presentation
The Near Field Communication (NFC) control relay is designed to monitor the
following functions in 3-phase power networks and upon detection of faults, the relay
contacts can be opened or closed with or without a set timing period.
b Sequence of phases (L1, L2, L3, N)b Phase lossb Asymmetryb Undervoltageb Overvoltageb Under-frequencyb Over-frequency
NFC control relay provides simplied product selection and inventory management.
It monitors 3-phase or 3-phase + neutral networks with 4 indication LEDs that display
exact faults occurred during the process.
The mobile app, Zelio NFC, is Android enabled and can be downloaded onto your
phone from Google Play. With this mobile app, accurate parameter settings can be
achieved and the 2 relay outputs can be individually congured.
Applications
b Control against reverse motor operation (lifting, handling, elevators, escalators, etc.)b Control of sensitive 3-phase suppliesb Emergency power supply switching in abnormal conditionsb HVAC and pumping control panels
RMNF22TB30
PL /-PS-
UV /-OV-
Asym
UF /-OF-
NFC
12 11 14
22 21 24
R2
R1
Un
9
Zelio NFC Control Relay
Description
RMNF22
1
2
3
4
5
6
7
8
1 Pairing Indication LED
2 Phase Loss (PL) fault indication LED (Red continuous) or Phase Sequence (PS)
fault indication LED (Red blinking)
3 Undervoltage (UV) fault indication LED (Red continuous) or Overvoltage (OV)
fault indication LED (Red blinking)
4 Asymmetry (Asym) fault indication LED (Red continuous)
5 Under-frequency (UF) fault indication LED (Red continuous) or Over-frequency (OF)
fault indication LED (Red blinking)
6 Output 2 indication LED (Amber)
7 Output 1 indication LED (Amber)
8 Power Supply indication LED (Green)
9 NFC antenna location
Zelio NFC control relay mobile application
To use NFC control relay, an Android phone with NFC feature and Android OS
(version 4.4 and above) are required. The Zelio NFC app can be downloaded in the
mobile with one of the following methods:
b Align the mobile phone NFC antenna to the product NFC antenna. This will take
you to the Google Play page for downloading the app.
b Go to Google Play and search for “Zelio NFC”. b Scan the below QR code to download the Zelio NFC app.
Zelio NFC control relay with Smartphone mobile app
14
With Zelio NFC App installed in your mobile device, you can retrieve/congure and
lock/unlock the product settings, and diagnose product status. The related function
diagrams, wiring diagram and Quick Start Guide can be obtained from the app.
They feature:
b Read, write, clone settingsb Easy auto-congure settings b Conguration of up to 10 alarms with dierent monitoring functionsb Alarm combination with logic (AND, OR, NOT) for relay outputb User dened positive & negative logic (relay output)b Simulator to check logic validity in alarm combinationb Diagnose feature for displaying historical faults through event loggingb Share settings via multiple channels depending on the phone (email, WhatsApp, etc.) b Secured with password protection
Operation,
L2
L3
t
references
Operating principle
RMNF22
Phase loss + Phase sequence
Phase L1
Phase L2
Phase L3
Alarm
Undervoltage + Overvoltage
Threshold >U
Hysteresis
Phases L1/L2/L3
Hysteresis
Threshold U<
Alarm
Asymmetry
With on delay
Phase L1
Phase L2
Phase L3
Asymmetry
Hysteresis
0%
Alarm
TrTrTrTr
With on delay
TtTt
TtTtTt
<Tt
Zelio Control Relays
Multifunction 3-phase control relays
RMNF22
Alarm triggered
<Tt
Alarm not triggered
The relay monitors its own supply voltage Un:
b Correct sequence of three phases b Phase loss of at least one of the three phasesb Phase loss or phase sequence values can be set individually using the
app.
b If a sequencing or phase loss fault is detected, the relay output opens or
closes based on user Alarm settings in app.
Note: Tr: response after crossing of threshold (< 300 ms)
Alarm triggered
Alarm not triggered
The relay monitors its own supply voltage Un:
b Under Voltage or Over Voltageb An adjustable time delay on threshold crossing provides immunity to
<T
transients, and helps prevent spurious triggering of the output relay.
b If a voltage fault is detected, the relay opens or closes at the end of time
delay set as On-delay or O-delay by the user through the app.
Note: Tt: time delay after crossing of threshold (adjustable in Zelio NFC app)
Alarm triggered
Alarm not triggered
The relay monitors its own supply voltage Un:
b Asymmetryb If an asymmetry fault is detected, the relay opens or closes at the end of
time delay set by the user through the app.
Note: Tt: time delay after crossing of threshold (adjustable in Zelio NFC app)
Under-frequency + Over-frequency
With on delay
Threshold >F
Hysteresis
Frequency L1/L2/L3
Hysteresis
Threshold F<
Alarm
<Tt
TtTt
Alarm triggered
Alarm not triggered
The relay monitors its own supply voltage Un:
b Under-frequency or Over-frequencyb If a frequency value exceeding the threshold is detected, the relay
opens or closes at the end of the time delay set as On-delay or O-delay by
the user through the app.
Note: Tt: time delay after crossing of threshold (adjustable in Zelio NFC app)
Alarm combination using Boolean logic
With Zelio NFC App, it is possible to combine dierent alarms using AND, OR and NOT logic to form unique monitoring combinations for each
of the relay outputs. A Simulator is also available to verify the validity of the overall logic.
References
RM_528_CPMGU18001
RMNF22TB30
FunctionMeasurement
b Phase sequenceb Phase lossb Asymmetryb Undervoltageb Overvoltageb Under-frequencyb Over-frequency
range
Vkg/lb
208...480 aAdjustable
Time delayOutputReferenceWeight
0.1 s…60 min
(Phase loss and
Phase sequence
instant trigger)
2x 1 CO
8 A (individually congurable)
RMNF22TB300.125/
0.276
15
Presentation, description,
L1 L2 L3
L1 L2 L3
81
operation
RM22T●●●
Zelio Control Relays
Multifunction 3-phase control relays
RM22TA, RM22TU, RM22TR, and RM22TG
Presentation
RM22 multifunction Zelio control relays monitor the following functions on 3-phase
supplies:
FunctionsRM22TARM22TURM22TR RM22TG
Sequence of phases L1, L2, and L3
Phase loss
Asymmetry
Undervoltage
Overvoltage and undervoltage
Function performed
Function not performed
Depending on the model, RM22T●●● control relays:
b Accept dierent nominal 3-phase voltages: up to 480 Va
b Monitor their own power supply measured as a true rms value (except RM22TG)
b Are designed for clip-on mounting on a 5 rail
They feature a:
b Sealable cover to help protect the settings
b Diagnostic button for load circuit testing
b Relay output status LED
b Fault detection indication LED
b Dial pointer LED indicator for relay power ON status
b Relay output On-delay or O-delay
L1 L2
L3
RM22TA31
200
10 20
5
Tt
0,1 30s
10
8
Asym
5
DIAGNOSTIC
12 11 14
22 21 24
RM22TA
L1 L2 L3
RM22TR31
200
208
220
ON DELAY
240
10
5
Tt
0,1 30s
6
>U
4
2
-8 -14
-6
<U
-4
-2
DIAGNOSTIC
12 11 14
22 21 24
RM22TR
208
220
240
1a
25
2
12
Def
3a
15%
R
4
200
208
OFF
220
1b
DELAY
240
20
25
4
16
18
Def
3c
20%
R
-16
-18
3b
-20%
4
RM22TU23
400
380
-8
-6
<U
-4
-2
DIAGNOSTIC
12 11 14
22 21 24
RM22TU
RM22TG20
DIAGNOSTIC
12 11 14
22 21 24
RM22TG
415
440
1a
480
-14
-16
-18
3b
-20%
Def
R
4
Un
R
4
Un Green LED: indicates that supply to the product is on
R Yellow LED: indicates relay output status
DEF Yellow LED: indicates fault detection
Applications
b Control for connection of moving equipment (site equipment, agricultural
equipment, refrigerated trucks)
b Control against reverse motor operation (lifting, handling, elevators, escalators, etc.)
b Control of sensitive 3-phase supplies
b Emergency power supply switching in abnormal conditions
Description
RM22TA, RM22TU, RM22TR, RM22TG
1a Voltage range selector switch
1b Voltage range/On-O delay selector
2 Time delay adjustment potentiometer Tt
3a Asymmetry threshold setting potentiometer Asym
3b Undervoltage setting potentiometer <U
3c Overvoltage setting potentiometer >U
4 Diagnostic button
Operating principle
Multifunction 3-phase supply control relays
monitor:
b Product being powered by L1 and L3
b Correct sequencing of phases
L1, L2, and L3
b LED indication for relay output status and
fault detection (except phase disconnection)
b Phase loss, including in the case of voltage
regeneration
b Undervoltage from - 2…- 20% of the supply
voltage Un
b Overvoltage from 2…20% of the supply
voltage Un
b Asymmetry from 5…15% of the supply
voltage Un
Voltage switch operation:
v Set the switch to 3-phase supply voltage Un.v The position of this switch is taken into account on energization of the device.v If the switch position is changed while the device is operating, all the LEDs ash
but the product continues to operate normally with the voltage selected at the time of
energization preceding the change of position.
v If the switch is returned to the original position selected prior to the last
energization, the LEDs return to their normal state.
Function Diagram
Output 11-14, 21-24 open
Output 11-14, 21-24 closed
16
Operation (continued)
L2
L3
0%
Tt
Tt
R
150 V (RM22TA31)
250 V (RM22TA33)
Relay
outputs
150 V (RM22TU21)
L2
R
Relay
outputs
L1/L2/L3
L1
L3
Threshold
Hysteresis
Relay
outputs
Phases
Operating principle (continued)
RM22TA
Phase + Asymmetry
v Sequence of phases L1, L2, and L3
v Phase loss
v Asymmetry Asy
Phase L1
Phase L2
Phase L3
Asymmetry
Hysteresis
Zelio Control Relays
Multifunction 3-phase control relays
RM22TA, RM22TU, RM22TR, and RM22TG
The relay monitors its own supply voltage Un:
v correct sequence of three phasesv phase loss of at least one of the three phases (U measured < 150 V
(RM22TA31) and < 250 V (RM22TA33))
v asymmetry adjustable from 5…15% of Un
b If a sequencing or phase loss fault is detected, the relay opens instantly.
b If an asymmetry fault is detected, the relay opens at the end of the time
delay set by the user.
b On energization of the device with a detected measured fault, the relay
stays open.
RM22TU
Phase + Undervoltage
v Sequence of phases L1, L2, and L3
v Phase loss
Phase L1
Phase L2
Phase L3
v Undervoltage control <U
L2
L3
<U
R
TtTt
250 V (RM22TU23)
L3
L2
L1
Note: Tt: time delay after crossing of the threshold (adjustable on the front panel)
The relay monitors its own supply voltage Un:
v correct sequence of the three phases
v phase loss of at least one of the three phases (U measured < 150 V
(RM22TU21) and < 250 V (RM22TU23))
v undervoltage adjustable from - 2…- 20% of Un
b If a sequencing or phase loss fault is detected, the relay opens instantly.
b If a voltage fault is detected, the relay opens instantly.
b On energization of the device with a detected measured fault, the relay
stays open.
Note: Tt: time delay after crossing of the threshold
17
Operation (continued)
<
U
>
U
L1
L2
L3
Tt
Tt
R
Phases L1/L2/L3
Relay
outputs
Hysteresis
Hysteresis
R - R1/R2
L2
Phase L1
Phase L2
Phase L3
Relay
outputs
150 V (RM22TR31)
R
Relay
outputs
Operating principle (continued)
RM22TR
Phase + Undervoltage/overvoltage
v Sequence of phases L1, L2, and L3v Phase loss
Phase L1
Phase L2
Phase L3
v Overvoltage and undervoltage (O-delay)
Threshold
Threshold
Zelio Control Relays
Multifunction 3-phase control relays
RM22TA, RM22TU, RM22TR, and RM22TG
250 V (RM22TR33)
L3
L2
The relay monitors its own supply voltage Un:
v phase loss (U measured <150 V (RM22TR31) and
< 250 V(RM22TR33))
v undervoltage and overvoltage
b An adjustable time delay on threshold crossing provides immunity to
transients, and helps prevent spurious triggering of the output relay.
b If a voltage fault is detected, the relay opens at the end of the time delay
set as On-delay or O-delay by the user.
b On energization of the device with a detected measured fault, the relay
stays open.
b In the event of phase loss, the relay opens instantly.
RM22TG
Phase control
v Sequence of phases L1, L2, and L3v Phase loss
100%
100V
0%
100%
100V
0%
100%
100V
0%
Tr
Tr
Note: Tt: time delay after crossing of the threshold (adjustable on the front panel)
The RM22TG relay monitors:
v correct sequencing of the three phasesv total loss of two or more of the three phases
b When the phase sequence and voltages are correct (> 183 Va), the
output relays are closed and the R LED is on.
L3
b When there is a sequencing fault or total loss of two or more phases
(detected as soon as one of the voltages drops below 100 V) the relay
opens instantly and the R LED goes o.
b On energization of the device with a detected measured fault, the relay
stays open.
Tr
TrTr
Note: Tr: response time on appearance of a fault
18
References
Zelio Control Relays
Multifunction 3-phase control relays
RM22TA, RM22TU, RM22TR, and RM22TG
References
FunctionMeasurement
b Phase
sequence
b Phase loss
b Asymmetry
range
Vkg/lb
200…240 aO delay
380…480 aO delay
Time delayOutputReferenceWeight
(0.1...30 s)
(0.1...30 s)
2 CO
8 A
2 CO
8 A
RM22TA310.090/
RM22TA330.090/
0.198
0.198
RM22TA31
PF143400PF143402
RM22TG20
RM22TR31
PF143403PF143405
RM22TU21
b Phase
sequence
b Phase loss
b Undervoltage
and
overvoltage
b Phase
sequence
b Phase loss
b Undervoltage
b Phase
sequence
b Phase loss
200…240 aOn/O delay
(0.1...30 s)
380…480 aOn/O delay
(0.1...30 s)
200…240 aNo2 CO
380…480 aNo2 CO
208...480 aNo2 CO
2 CO
8 A
2 CO
8 A
8 A
8 A
8 A
RM22TR310.090/
0.198
RM22TR330.090/
0.198
RM22TU210.090/
0.198
RM22TU230.090/
0.198
RM22TG200.090/
0.198
19
Presentation,
description
RM17Tp00
Zelio Control Relays
Multifunction 3-phase supply control relays
RM17TT, RM17TA, RM17TU, and RM17TE
Presentation
RM17TT, RM17TA, RM17TU and RM17TE multifunction control relays monitor the
following on 3-phase supplies:
FunctionsRM17TTRM17TARM17TU RM17TE
Sequence of phases L1, L2, and L3
Phase loss(1)
Asymmetry
Undervoltage
Overvoltage and undervoltage
Function performed
Function not performed
Depending on the model, RM17T●00 control relays:
b Accept dierent nominal 3-phase voltages: 208...480 V ab Monitor their own power supply measured as a true rms valueb Are designed for clip-on mounting on a 5 rail
They feature:
b A sealable cover to help protect the settingsb A control status indicator LED
L1 L2 L3
Un
R
MWG
12 11 14
RM17TT00
L1 L2 L3
Un
R
12 11 14
1
5
1
2
3b
L1 L2 L3
Un
R
12 11 14
RM17TA00
L1 L2 L3
Un
R
12 11 14
1
2
3a
5
1
2
3c
4
Applications
b Control for connection of moving equipment (site equipment, agricultural
equipment, refrigerated trucks)
b Control against reverse motor operation (lifting, handling, elevators,
escalators, etc.)
b Control of sensitive 3-phase suppliesb Emergency power supply switching in abnormal conditions
Description
RM17TT00, RM17TA00, RM17TU00, RM17TE00
1 Voltage range selector switch (208, 220, 380, 400, 415, 440, and 480 V a)
4 Asymmetry threshold setting potentiometer Asy
5 Spring for clip-on mounting on 35 mm/1.38 in.5 rail
5
RM17TU00
Un Green LED: indicates that supply to the product is on
R Yellow LED: indicates relay output status
RM17TE00
5
20
(1) Phase loss with regeneration.
Operation
R
30% Un 30% Un30% Un
L3
L2
Phase L3
Phase L2
Phase L1
Relays
L2
L3
0%
Tt
Tt
R
Relays
Zelio Control Relays
Multifunction 3-phase supply control relays
RM17TT, RM17TA, RM17TU, and RM17TE
Operating principle
3-phase supply control relays monitor:
b Correct sequence of phases L1, L2, and L3
b Phase loss, including voltage regeneration
b Undervoltage from - 2…- 20% of the supply voltage Un
b Overvoltage from 2…20% of the supply voltage Un
b Asymmetry from 5…15% of the supply voltage Un
b Fault signaling is by LED
Voltage switch operation:
b Set the switch to the 3-phase supply voltage Un.b The position of this switch is taken into account on energization of the device.b If the switch position is changed while the device is operating, all the LEDs ash, but the product continues to operate normally with the
voltage selected at the time of energization preceding the change of position.
b If the selector switch is returned to the original position selected prior to the last energization, the LEDs return to their normal state.
RM17TT00
Phase + Voltage regeneration
v Sequence of phases L1, L2, and L3
v Phase loss
Function Diagram
Output 11-14, 21-24 open
Output 11-14, 21-24 closed
The relay monitors:
v correct sequence of the three phasesv phase loss of at least one of the three phases (U measured < 0.7 x
Un)
b If a sequencing or phase loss fault is detected, the relay opens
instantly.
b On energization of the device with a detected measured fault, the
relay stays open.
RM17TA00
Phase + Asymmetry
v Sequence of phases L1, L2, and L3
v Phase loss
v Asymmetry Asy
Phase L1
Phase L2
Phase L3
Asymmetry
Hysteresis
The relay monitors:
v correct sequence of the three phasesv phase loss of at least one of the three phases
(U measured < 150 V)
v asymmetry adjustable from 5…15% of Unb If a sequencing or phase loss fault is detected, the relay opens
instantly.
b If an asymmetry fault is detected, the relay opens at the end of the
time delay set by the user.
b On energization of the device with a detected measured fault, the
relay stays open.
Note: Tt: time delay after crossing of the threshold (adjustable on front panel).
21
Operation (continued)
R
150 V 150 V
150 V
L3
L2
Relays
L1/L2/L3
L1
L2
L3
L2
L3
L1
TtTt
<
U
R
Threshold
Hysteresis
Relays
Phases
L2
L3
0%
150 V 150 V150 V
Phase L3
Phase L2
Phase L1
Hysteresis
Asymmetry
Relays
<
U
>
U
L1/L2/L3
L1
L2
L3
TtTt
R
Tt
Threshold
Hysteresis
Hysteresis
Threshold
Relays
Operating principle (continued)
RM17TU00
Phase + Undervoltage
v Sequence of phases L1, L2, and L3v Phase loss
Phase L1
Phase L2
Phase L3
v Undervoltage control U<
Zelio Control Relays
Multifunction 3-phase supply control relays
RM17TT, RM17TA, RM17TU, and RM17TE
The relay monitors:
v correct sequence of the three phasesv phase loss of at least one of the three phases
(U measured < 150 V)
v undervoltage adjustable from - 2…- 20% of Un (- 2… - 12% in the
range 3 x 208 V a and - 2%…- 17% in the range 3 x 220 V a due to
the minimum voltage 183 V a)
b If a sequencing or phase loss fault is detected, the relay opens
instantly.
b If a voltage fault is detected, the relay opens at the end of the time
delay set by the user.
b On energization of the device with a detected measured fault, the
relay stays open.
Tt: time delay after crossing of the threshold (adjustable on front panel)
RM17TE00
Phase + Asymmetry + Undervoltage/overvoltage
v Sequence of phases L1, L2, and L3v Phase lossv Asymmetry Asy
R
Tt
Tt: time delay after crossing of the threshold (adjustable on front panel)
Tt
v Control of overvoltage and undervoltage in window mode U> / U<
The relay monitors:
v correct sequence of the three phasesv phase loss of at least one of the three phases
(U measured < 150 V)
v asymmetry adjustable from 5…15% of Unv the overvoltage and undervoltage dierence in window mode,
adjustable from 2…20% of Un
Un208 V220 V380, 400, 415, 440 V 480 V
Voltage
threshold (%)
- 12…- 2- 17…- 2- 20…- 2- 20…- 2
<
>+ 2…+ 20 + 2…+ 20 + 2…+ 20+ 2…+ 10
b If a sequencing or phase loss fault is detected, the relay opens
instantly.
b If an asymmetry or voltage fault is detected, the relay opens at the
end of the time delay set by the user.
b On energization of the device with a detected measured fault, the
relay stays open.
Phases
Tt: time delay after crossing of the threshold (adjustable on front panel)
22
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