Description
This set up is designed to study the working /Protection principle of 3phase Digital over current and Negative sequence current relay .It consists of
- 3Ø –OCR +Negative Sequence Current Relay
- Panel arrangement with Meter & 3 Ø Autotransformer & Load set up
Numerical 3 phase over current relay + earth fault relay & Negative Sequence Relay
- Type :Digital Relay (Numerical type)
- Function :Negative sequence Over Current &
- :3 elements over current
- :+single element EF
- CT Input :1A or 5A
- Current Setting:up to 120%
- Time Setting :available
- Function :IDMT, DMT , Instan etc
- Output :NC&NO Contact@2A
- Auxiliary supply 230VAC
- Make :C&S
Panel with Meter & Load
- Three number of Digital Ac ammeter (0-5A)is provided to indicate 3 phase supply current
- One number of 3 phase Lamp load-5A with different load selector switch is provided
- 3 number of 5/1 CT is provided
- Necessary MCB , Indicator, CT Input terminals are terminated in front panel
- Provision to simulate phase reversal
- One number of Automatic trip time measurement circuit (ATTM Circuit) is provided
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- One number START push button is provided in ATTM Circuit
- One number STOP push button is provided in ATTM Circuit
- One number LCD – Digital stop Clock is provided in ATTM Circuit to measure relay trip time in S , S/10 , S/100
- One number reset switch is provided in front panel to restart the digital stop clock
- All are mounted on a nice cabinet with diagram stickered on front panel & 230VAC@50Hz AC Input with power ON/OFF Switch
Autotransformer with Load set up
- Three number of Single phase Transformer (6A per phase) is provided to simulate unbalance & balance 3 phase ac source
- One number of 3 phase Lamp load-5A with different load selector switch is provided- facility to simulate balanced & unbalanced load
- All are mounted on nice powder coated cabinet with required input , output terminals & indicators etc
For More Details , Contact : shanmugam@powerlabinstruments.com
