Description - 3PP Wire-wound resistor

3PP1326 - Voltage divider for underexcitation protection

Device with wire-wound resistors as voltage dividers (division ratio 10:1 or 20:1) to inject the excitation voltage into the underexcitation protection in the SIPROTEC 7UM62.

3PP1336 - Resistor for stator or rotor ground fault protection (50 Hz/60 Hz)

Device with wire-wound resistors for the stator ground fault protection or rotor ground fault protection with 50 Hz/60 Hz injection.

• In the -1CZ version, it is used as voltage divider (division ratio 5:1) to inject the displacement voltage into the stator ground fault protection of a SIPROTEC 7UM6 device. It is used for detecting the displacement voltage at a grounding transformer.
• In the -0DZ version, the device features two 105 Ω resistors and is used as series resistor for the rotor ground fault protection with 50 Hz/60 Hz injection in the SIPROTEC 7UM6.