54, Ezra Street , Kolkata - 700001 , West Bengal, IndiaMonday to Saturday, 10:30 am to 6:30 pm

Industrial Supply Syndicate Kolkata, since 1977 Send an enquiry
Rishabh Relay PHR Phase Protection Relay

Rishabh Relay PHR Phase Protection Relay

Brand
Rishabh
Model number
Relay PHR

Self-powered 3-phase relay for 110, 240, 415 or 440 V L-L systems: trips on phase failure (70%), voltage unbalance (20%) and incorrect phase sequence; auto reset, 1 CO 5 A contact.

Price and availability on request

Request a quote

Sent with the product details: Rishabh Relay PHR Phase Protection Relay.

A phone number or an email address is needed, so we can reply.

We use these details only to reply to your enquiry. See our privacy notice.

Key features

  • Phase unbalance, phase failure and incorrect phase sequence protection
  • True RMS measurement (up to 15th harmonic)
  • Self-powered: no external power supply
  • Resets automatically when the fault condition is recovered
  • LED indication for unbalance, phase fail and incorrect phase sequence
  • For 3-phase 3-wire (trips on V L-L) and 3-phase 4-wire (trips on V L-N) systems
  • Applications: motor protection, conveyor systems, closed loop control operations

Specifications

Input
Nominal voltage (specify when ordering)110 V L-L (85 - 137 V), 240 V L-L (204 - 300 V), 415 V L-L (330 - 518 V), 440 V L-L (350 - 550 V)
Nominal frequency50 Hz or 60 Hz (specify when ordering)
Auxiliary supplySelf powered, burden < 11 VA
Default settings
Phase failure70% of nominal voltage, instantaneous trip
Incorrect phase sequenceInstantaneous trip
Voltage unbalance20% of nominal voltage, trip delay 3.5 s
Reset / power on delay1 s approx.
Hysteresis3% of trip value
Accuracy
Tripping±3% of nominal voltage
Relay contacts
Type1 CO
Rating5 A / 250 V AC / 30 V DC (resistive load)
Mechanical endurance1 x 10^7 operations
Electrical endurance1 x 10^5 operations
General
Operating temperature-10 to +55 °C
Storage temperature-25 to +70 °C
Relative humidity0 - 90% non condensing
Shock15g in 3 planes
Vibration10 - 55 Hz, 0.15 mm amplitude
EnclosureIP20 (front face only)
Weight120 g approx.
Standards
SafetyIEC 61010-1-2010
Installation categoryCAT III, pollution degree 2
High voltage test2.2 kV AC, 50 Hz for 1 minute between all electrical circuits
Ordering
Order codePHR-[2: 3P3W / 3: 3P4W]-[voltage 1: 110 / 2: 240 / 3: 415 / 4: 440]-[1: 50 Hz / 2: 60 Hz]-[1: energized / 2: de-energized]

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

Related products