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 I Current Protection Relay

Rishabh Relay I Current Protection Relay

Brand
Rishabh
Model number
Relay I

Digital current protection relay cum class 0.5 DPM: over current with IDMT curves, under current, current loss and unbalance protection; CT ratio programmable to 999 kA, 2 relay outputs.

Price and availability on request

Request a quote

Sent with the product details: Rishabh Relay I Current 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

  • Over current protection with IDMT curves: standard, very, extremely and long inverse (TMS 0.1 - 1)
  • Under current, current loss and current unbalance protection
  • ANSI functions 37 (under current), 51 (over current), 46 (current unbalance)
  • 4-digit ultra bright 7 segment LED display; trip relay cum DPM with class 0.5
  • User selectable CT primary from 1 A to 999 kA; 1P2W / 3P4W / 3P3W
  • Individual faults can be deactivated
  • Auto / manual reset; auto scroll or fixed screen
  • Applications: motors (overload, locked rotor, short circuit), gensets, heating systems, broken drive belt detection, load detection

Specifications

Input
Nominal input current5 A
CT secondary1 A to 5 A programmable on site
CT primary1 A to 999 kA programmable on site
Max. continuous input current145% of CT secondary
Overload withstand20 x for 1 s, repeated 5 times at 5 min
Measuring rangeCurrent 5 - 140% of CT secondary, frequency 40 - 70 Hz
Current burden< 0.25 VA approx. per phase
Accuracy
Current / frequency±0.5% of nominal value / ±0.2 Hz
Delays±140 ms or ±5% of set delay, whichever is greater
Auxiliary supply
Higher aux60 V - 300 V AC/DC (nominal 230 V AC/DC, 50/60 Hz for AC)
Lower aux20 V - 60 V DC / 20 V - 40 V AC (nominal 48 V DC / 24 V AC)
Frequency45 to 66 Hz
Burden< 4 VA approx.
Settings
Current loss5 - 99%
Current unbalance2 - 20%
Over current30 - 140% (IDMT disabled), 30 - 125% (IDMT enabled)
Under current10 - 99%
Time multiplier setting0.1 - 1
Trip delays0 - 30 s (each fault)
Reset delay0.2 - 30 s
Power on delay0.5 - 30 s
Reset optionAuto / manual
Relay control modeDe-energize / energize
Differential / hysteresis1 - 15%
Relay contacts
Types1 CO, 2 CO or 1 CO + 1 CO
Rating5 A / 250 V AC / 30 V DC (resistive load)
Mechanical endurance1 x 10^7 operations
Electrical enduranceNO 3 x 10^4, NC 1 x 10^4 operations (1 CO / 1 CO + 1 CO); 1 x 10^5 operations (2 CO)
Standards
EMCIEC 61326-1:2012, Table 2; immunity IEC 61000-4-3 10 V/m
SafetyIEC 61010-1-2010, permanently connected use
Installation category300 V CAT III / 600 V CAT II, pollution degree 2
High voltage test2.2 kV AC, 50 Hz for 1 minute
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)
Weight300 g approx.
Ordering
Order codeRISH Relay I - [1: single phase / 3: three phase] - [2000: 1 CO / 2001: 1 CO + 1 CO / 2002: 2 CO] - [HA / LA aux]

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

Related products