ABB REG316 4 Series - Page 676

Auxiliary unit for REG216/316*4 for 100%
stator and rotor earth fault protection
ABB Switzerland Ltd
Utility Automation
REX010/011
1MRB520123-Ben
Page 4
Software (cont’d) - Stator earth
resistance R
PS
130 Ω to 500 Ω
- Stator earth 700 Ω to 5 kΩ
- resistance R
ES
(≥4.5* R
PS
)
The effective earth resistances R
ES
, R
PS
and
the transformation ratio of the voltage trans-
former must be calculated in accordance with
the Operating Instructions.
Further details about settings of the various
functions can be obtained from the REG216/
316*4 data sheet.
Rotor earth fault protection
This function incorporates an alarm as well as
a trip level with separate tripping and signal-
ling outputs.
The function allows the measurement of the
actual coupling capacitance while the ma-
chine is standing still. This measurement per-
mits optimum settings with respect to the pro-
tected machine.
Alarm and trip levels are entered and read out
in kΩ.
Settings:
Alarm level 100 Ω to 25 kΩ
Delay 0.2 s to 60 s
Trip level 100 Ω to 25 kΩ
Delay 0.2 s to 60 s
R
Er
900 Ω to 5 kΩ
Coupling capacitance 2 µF to 10µF
Reset ratio 110% (with
settings of <10 k Ω )
120% (with
settings of > µF 10
k
Ω )
Accuracy 100 Ω to 10 kΩ:
<±10%
0 to 100 Ω,
10 kΩ to 25 kΩ:
<±20%
Operating time 1.5 s
Machine and system parameters:
- Rotor earth
capacitance 200 nF to 1 µF
- Rotor earth
resistance R
Pr
100 Ω to 500 Ω
- Rotor earth
resistance R
Er
900 Ω to 5 kΩ
- Coupling
capacitance 4 µF to 10 µF
- Time constant T = R
Er
x C
= 3 to 10 ms
The effective earth resistances R
Er
and R
Pr
must be calculated in accordance with the
User’s Guide.
Further details about settings of the various
functions can be obtained from the REG216/
316*4 Data Sheet.
Technical data REX010 Injection unit
The injection unit REX010 is contained in a REG316*4 housing, therefore the specifications of
the design details and the general data of the REG316*4 are applicable. (Exception: Insulation
voltage for REX010: Supply = 2.8 kV DC)
Supply voltage range: 36 to 312 V DC (refer to table below)
Power consumption <150 VA
Optocoupler inputs: 18 to 312 V DC (refer to table below)
Connection terminals: HDFK (type Phoenix) 4 mm
2
Control and signalling devices:
green LED on:
red LED on:
yellow LED on:
ENABLE switch:
DISABLE switch:
RESET push button:
Optocoupler input:
Device ready
Overload
No injection
Injection on
Injection off
Reset after interruption of injection
Interruption of injection, reset after interruption of
injection