what is a phase detection relay ? how it works ? Does it look like a normal EMR ?

what is a phase detection relay ? how it works ? Does it similar to a normal EMR ?

thanX

Here is list and functions of normally used
3-phase Protection relays


Control and Automation
For industrial applications ED.03
Electronic relays
GE POWER CONTROLS Ltd

Earth leakage relays..............F13

Integral protection relay
for three-phase lines.............F14

Unbalance and phase
failure protection relay
for three-phase lines.............F15

Phase sequence and
phase failure protection
relay for three-phase lines.......F16

Phase sequence relay
for three-phase lines.............F16

Maximum and
minimum voltage
protection relay for
three-phase lines.................F17

**broken link removed**




Zelio® Control
Measurement Relays
RM17 and RM35

Selection Guide . . . . . . . . . . . . . . . . . ............... . . . . . . . . . . . 2
RM17T•00 Multifunction 3-phase supply control relays . . .. . . . . . . . 6
RM35TF Multifunction 3-phase supply control relays . . . . . . . . . . . 19
RM35TM 3-phase supply and motor temperature control relays . . . . 24
RM17UB3 and RM35UB3 3-phase voltage control relays . . . . . . . . . 30

http://static.schneider-electric.us...lio Control Measurement Relays/8430CT0601.pdf