Bender NGRM750 Skrócona instrukcja obsługi - Strona 6
Przeglądaj online lub pobierz pdf Skrócona instrukcja obsługi dla Monitor Bender NGRM750. Bender NGRM750 8 stron. Neutral grounding resistor monitor (ngr)
Drukuj stronęNGRM700 (HRG), NGRM750 (LRG)
HRG system: Recommended minimum value
(tripping level 50 %)
R
NGR
Temperature range –40...+70 °C,
Field calibration at 20 °C
CD1000/CD1000-2
U
400 V
600 V
sys
I
NGR
231 Ω
346 Ω
1 A
46 Ω
69 Ω
5 A
(23 Ω)
35 Ω
10 A
(15 Ω) (23 Ω) (27 Ω)
15 A
—
(17 Ω) (20 Ω)
20 A
—
—
25 A
—
—
30 A
—
—
40 A
—
—
50 A
—
—
100 A
Maximum trip times t
used
The setting for t
may under no circumstances be
GF trip
longer than the maximum possible operating time of the
CD...-NGRM coupling device.
The table shows an overview of the t
coupling device used (menu 6.5):
Coupling
U
sys
device
CD1000
400...690 V
CD1000-2
CD1000
691...1000 V
CD1000-2
CD5000
1001...4300 V
CD5000
CD14400
4301...14550 V
CD25000
14551...25000 V
CD25000
6
NGRM7xx_D00292_07_Q_XXEN/11.2022
CD1000-2
690 V
1000 V
2400 V
398 Ω
577 Ω
1386 Ω
80 Ω
115 Ω
277 Ω
40 Ω
58 Ω
139 Ω
38 Ω
92 Ω
29 Ω
69 Ω
(16 Ω)
(23 Ω)
55 Ω
—
(19 Ω)
(46 Ω)
—
—
(35 Ω)
—
—
(28 Ω)
—
—
—
for the CD-NGRM
GF Trip
settings for the
GF Trip
Ground-fault
trip setting
on or off
on
on or off
on or off
on
on
on
() = Limited temperature range at any field calibration tem-
perature ±20 K
The temperatures must be within the limits of the operating
temperature range of –40...+70 °C
[for UL applications –40...+60 °C].
CD5000
4200 V
6000 V
—
—
485 Ω
693 Ω
242 Ω
346 Ω
162 Ω
231 Ω
121 Ω
(173 Ω)
97 Ω
(139 Ω)
81 Ω
(115 Ω)
61 Ω
(87 Ω)
(48 Ω)
—
(24 Ω)
—
Initial commissioning
The commissioning wizard (menu 8) queries the follow-
ing parameters; additional settings: menu 6.
Language (8.2)
Date (8.3)
Time (8.4)
U
(8.5)
sys L-L
Frequency (8.6)
max. t
I
(8.7)
GF Trip
NGR nom
R
(8.8)
NGR nom
CT primary (8.9)
48 h
CT secondary (8.10)
CT connection (8.11)
300 s
Field calibration (8.12)
48 h
1. Setting the response values (menu 6.5)
• Trip threshold for voltage (U
48 h
• Trip threshold for current (I
60 s
• Trip threshold for resistance (R
i
90 s
Low trip threshold values:
may lead to false tripping.
10 s
High trip threshold values: the device may not trip
at all
CD14400
6600 V
7200 V
11000 V
—
—
—
762 Ω
831 Ω
1270 Ω
381 Ω
416 Ω
635 Ω
254 Ω
277 Ω
423 Ω
191 Ω
208 Ω
318 Ω
(152 Ω)
(166 Ω)
254 Ω
(127 Ω)
(139 Ω)
212 Ω
(95 Ω)
(104 Ω)
(159 Ω)
(76 Ω)
(83 Ω)
(127 Ω)
—
—
—
NGR trip
NGR trip
CD25000
14400 V
25000 V
—
—
1663 Ω
—
831 Ω
1443 Ω
554 Ω
962 Ω
416 Ω
722 Ω
333 Ω
577 Ω
277 Ω
481 Ω
208 Ω
361 Ω
(166 Ω)
289 Ω
(83 Ω)
(144 Ω)
Select
Set
Set
System voltage
50 or 60 Hz
50 mA or 5 A
Start or do not start
)
)
)
NGR