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The most reliable PHASE MONITORS on the market are offered in the following configurations :

 

 

PHASE LOSS can occur when a fuse on one leg of a three phase system blows. A three phase motor operating under such a condition will eventually burn out. Depending on the load, the motor could regenerate up to 92% of the nominal voltage so it's important to select a phase monitor which has a user selectable adjustment to protect against this condition. In a four wire application, use a unit with a -4W suffix as these also detect loss of the neutral.

PHASE SEQUENCE is important for the correct rotation of the motor. Incorrect phase sequence can lead to machinery being damaged and perhaps serious injury to personnel.

PHASE IMBALANCE or ASYMMETRY is caused by single phase loads being primarily connected between the same two phases of a three phase system. A three phase motor runs much hotter under such a condition, considerably shortening its life.

VOLTAGE and CURRENT monitoring of three phase systems to insure that these do not exceed or drop below critical values is paramount for keeping machinery running at correct speed and problem free.

THERMISTORS are sometimes incorporated in the motor's windings measuring the resistance which increases as the temperature in the motor increases. Our 45PTR will react to this input as well as phase loss, incorrect sequence and under voltage conditions.

 
M1 Series   DIN Rail & Surface Mtg
m1
H.89 W.17.5 D.59 (mm)
Model No M1PRF M1PRF-4W M1TVR-4W
Function Three Phase Sequence/Loss Three Phase Sequence/Loss/ Under & Over Voltage Three Phase Sequence/Loss/ Under & Over Voltage Three Phase Sequence/Loss/ Under Voltage Three Phase Sequence/Loss/ Under Voltage Three Phase Sequence/Loss Three Phase Sequence/Loss Three Phase Loss & Under Voltage
Under / Over Voltage - Under & Over Under & Over Under Under Under (fixed at 70% of 400V) Under (fixed at 70% of 230V) Under
Adjustable Trip Level No Yes Yes Yes Yes No No No
Phase Loss (Failure) Yes Yes Yes Yes Yes Yes Yes Yes
Neutral Loss No No Yes No Yes No Yes Yes
Phase Sequence (Rotation) Yes Yes Yes Yes Yes Yes Yes No
Phase Asymmetry No No No No No No No No
Time Delay (from fault) ~100mS 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) ~100mS ~100mS 5-15 mins (delay on)
Output SPDT Relay SPDT Relay SPDT Relay SPDT Relay SPDT Relay SPDT Relay SPDT Relay 1 x SPDT Relay
Output Rating 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 6A @ 250VAC
Integral Transformer No No No No No No No No
Supply Voltage Un/U 200-450 Un: 380, 400V phase to phase Un: 220, 230V phase to neutral U: 280 - 520V phase to phase U: 161 - 300V phase to neutral U: 280 - 520V phase to phase U: 161 - 300V phase to neutral 380V AC
Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

M3 Series   DIN Rail & Surface Mtg

m3

H.89 W.35 D.59 (mm)
Model No
Function Three Phase Asymmetry Three Phase Sequence/Loss (Indicator only) Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Voltage Three Phase Under & Over Voltage/Loss
Under / Over Voltage - - Under Under Under & Over Under & Over
Adjustable Trip Level ± 25% No Yes Yes Yes Yes
Phase Loss (Failure) Yes Yes Yes Yes Yes Yes
Neutral Loss No No No Yes No Yes
Phase Sequence (Rotation) Yes Yes Yes Yes No No
Phase Asymmetry Yes No No No No No
Time Delay (from fault) ~1S - ~1S ~1S 0.2 - 10S 0.2 - 10S
Output 1 x SPDT Relay - 1 x SPDT Relay 1 x SPDT Relay 1 x SPDT Relay 1 x SPDT Relay
Output Rating 8A @ 250VAC - 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC
Integral Transformer No No No No No No
Supply Voltage Un/U 220, 380, 415VAC 300 to 500VAC 300 to 500VAC 300 to 500VAC 220, 380, 400, 415VAC 220, 380, 400, 415VAC
  180 to 260VAC 180 to 260VAC 180 to 260VAC - -
Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

M3 Series   DIN Rail & Surface Mtg

m3

H.89 W.35 D.59 (mm)
Model No
Function Three Phase Under & Over Voltage/Loss/Sequence Three Phase Under & Over Voltage/Loss/Sequence Three Phase Under & Over Voltage/Loss/Sequence Three Phase Under & Over Voltage/Loss/Sequence Three Phase Under & Over Voltage/Loss/Sequence
Under / Over Voltage Under & Over Under & Over Under & Over Under & Over Under & Over
Adjustable Trip Level Yes Yes Yes Yes Yes
Phase Loss (Failure) Yes Yes Yes Yes Yes
Neutral Loss No Yes No Yes Yes
Phase Sequence (Rotation) Yes Yes Yes Yes Yes
Phase Asymmetry No No No No No
Time Delay (from fault) 0.2 - 10S 0.2 - 10S 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable)
Output 1 x SPDT Relay 1 x SPDT Relay DPDT Relay DPDT Relay DPDT Relay
Output Rating 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1)
Integral Transformer No No No No No
Supply Voltage Un/U 220, 380, 400, 415VAC 220, 380, 400, 415VAC Un: 380, 400V phase to phase Un: 220, 230V phase to neutral Un: 332, 346V phase to neutral
- - - - (based on 575V and 600Vphase to phase)
Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

M3 Series   DIN Rail & Surface Mtg

m3

H.89 W.35 D.59(mm)

Model No
Function Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss
Under / Over Voltage Under Under Under Under Under Under Under
Adjustable Trip Level Yes Yes Yes Yes Yes Yes Yes
Phase Loss (Failure) Yes Yes Yes Yes Yes Yes Yes
Neutral Loss No Yes No Yes No Yes Yes
Phase Sequence (Rotation) Yes Yes Yes Yes Yes Yes Yes
Phase Asymmetry No No No No No No No
Time Delay (from fault) 0.2 - 10S 0.2 - 10S 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable) 0.2 - 10S (adjustable)
Output 1 x SPDT Relay 1 x SPDT Relay DPDT Relay DPDT Relay SPDT Relay SPDT Relay SPDT Relay
Output Rating 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1) 8A @ 250VAC (AC1)
Integral Transformer No No No No No No No
Supply Voltage Un/U 300 to 500VAC 300 to 500VAC U: 280 - 520V phase to phase U: 161 - 300V phase to neutral U: 336 - 624V phase to phase U: 194 - 360V phase to neutral U: 194 - 360V phase to neutral
180 to 260VAC 180 to 260VAC - - - - -
Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

45 Series   DIN Rail Mtg

45000

H.78 W.45 D.99 (mm)

Type No
Function Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under & Over Voltage/Loss Three Phase Under & Over Voltage/Loss Three Phase Asymmetry Three Phase Sequence/Loss Three Phase Sequence/Loss Three Phase Under Voltage/Loss Three Phase Under Voltage/Loss
Under / Over Voltage Under (fixed 60%) Under (fixed 70%) under & Over Under & Over - - Under (fixed 60%) Under Under
Adjustable Trip Level No ± 15% of Un ± 10% of Un ± 10% of Un 2-12% No No 75-100% 75-100%
Phase Loss (Failure) Yes Yes Yes Yes Yes Yes Yes Yes Yes
Neutral Loss No No No Yes No No No No Yes
Phase Sequence (Rotation) Yes Yes No No Yes Yes Yes No No
Phase Asymmetry No No No No Yes No No No No
Time Delay (from fault) 0.1 - 10S ~30mS 0.1 - 10S 0.1 - 10S ~200mS ~200mS ~15mS ~200mS ~200mS
Output 1 x SPDT Relay 1 x SPDT Relay 2 x SPDT Relays 2 x SPDT Relays 1 x SPDT Relay 1 x DPDT Relay 2 x SPNO Relays 1 x DPDT Relay 1 x DPDT Relay
Output Rating 10A @ 250VAC 10A @ 250VAC 8A @ 250VAC 8A @ 250VAC 10A @ 250VAC 8A @ 250VAC 10A @ 250VAC 8A @ 250VAC 8A @ 250VAC
Integral Transformer Yes Yes Yes Yes Yes Yes Yes Yes Yes
Supply Voltage Un/U 24, 110, 230, 400VAC 220, 400, 480, 600VAC 220, 380/400/415, 480, 600VAC 220, 380/400/415VAC 400VAC 220, 380, 400VAC 24, 110, 230, 400VAC 220, 380, 400VAC 220, 380, 400VAC
Monitoring Range 400VAC Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply max. 400Vac Monitors own supply Monitors own supply

 

B8 & B1 Series   8 and 11 Pin Plug-In

solar b

H.80 W.40 D.92(mm)

Type No
Function Three Phase Asymmetry/Failure Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under & Over Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss Three Phase Under Voltage/Sequence/Loss
Under / Over Voltage No Under Under Under & Over Under (fixed 70%) Under
Adjustable Trip Level 2-12% (phase unbalance) Yes Yes Yes ± 15% of Un Yes
Phase Loss (Failure) Yes Yes Yes Yes Yes Yes
Neutral Loss No No No No No No
Phase Sequence (Rotation) Yes Yes Yes Yes Yes Yes
Phase Asymmetry Yes No No No No No
Time Delay (from fault) 200ms (worse case 1 s) ~1S ~1S 0.2 - 10S ~30mS ~1S
Output 1 x SPDT Relay 1 x SPDT Relay 1 x SPNC, 1 x SPNO Relay 1 x SPDT Relay (US Pin-Out) 1 x SPDT Relay 1 x SPDT Relay
Output Rating 10A @ 250VAC 8A @ 250VAC 8A @ 250VAC 10A @ 250VAC 10A @ 250VAC 8A @ 250VAC
Integral Transformer No No No No Yes No
Supply Voltage Un/U 415VAC 325 - 500VAC 325 - 500VAC 120, 208, 240, 460, 480VAC 220, 400, 480VAC

300 - 500VAC

180 - 260VAC

90 - 140VAC

Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

B8 & B1 Series   8 and 11 Pin Plug-In

solar b

H.80 W.40 D.92(mm)

Type No
B1PRF
B8PMU
Function Three Phase Under Voltage/Sequence/Loss Three Phase Under & Over Voltage/Loss Three Phase Under & Over Voltage/Loss Three Phase Under & Over Voltage/Loss Three Phase Under Voltage/Sequence/Loss
Under / Over Voltage Under (fixed 70%) Under & Over Under & Over Under & Over Under
Adjustable Trip Level No Yes Yes Yes Yes
Phase Loss (Failure) Yes Yes Yes Yes Yes
Neutral Loss No No Yes No No
Phase Sequence (Rotation) Yes No No No Yes
Phase Asymmetry No No No No No
Time Delay (from fault) ~30mS 0.2 - 10S 0.2 - 10S 0.2 - 10S 0.2 - 10S
Output 1 x SPDT Relay 1 x SPDT Relay 1 x SPDT Relay 1 x SPDT Relay 1 x SPDT Relay (US Pin-Out)
Output Rating 10A @ 250VAC 10A @ 250VAC 10A @ 250VAC 8A @ 250VAC 10A @ 250VAC
Integral Transformer Yes Yes Yes No No
Supply Voltage Un/U 220, 380, 400, 440, 480VAC 220, 380, 400, 415, 480VAC 220, 380, 400, 415VAC 220, 380, 400, 415VAC

84-156VAC, 154-286VAC

242-450VAC, 308-572VAC

Monitoring Range Monitors own supply Monitors own supply Monitors own supply Monitors own supply Monitors own supply

 

70 Series   DIN Rail & Surface Mtg

70

H.70 W.100 D.114 (mm)

Type No
Function Three Phase Under & Over Voltage/Loss Three Phase Under & Over Voltage/Loss Three Phase Under Current/Loss Three Phase Under Current/Loss
Under / Over Voltage Under & Over Under & Over Over Current Under Current
Adjustable Trip Level Yes Yes Yes Yes
Phase Loss (Failure) Yes Yes Yes Yes
Neutral Loss No Yes Yes Yes
Phase Sequence (Rotation) No No No No
Phase Asymmetry No No No No
Time Delay (from fault) ~200mS ~200mS 0.2 - 10S 0.2 - 10S
Output 2 x DPDT Relays 2 x DPDT Relays 1 x DPDT Relay 1 x DPDT Relay
Output Rating 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC 8A @ 250VAC
Integral Transformer Yes Yes Yes Yes
Supply Voltage Un/U 220, 380, 400VAC 220, 380, 400VAC 110, 230, 400VAC 110, 230, 400VAC
Monitoring Range Monitors own supply Monitors own supply 5A (0-80%) 5A (0-80%)