Transformer Protection Relays (Buchholz Principle) - EMB Gmbh
Transformer Protection Relays (Buchholz Principle) - EMB Gmbh
Transformer Protection Relays (Buchholz Principle) - EMB Gmbh
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Elektromotoren und Gerätebau Barleben GmbH<br />
7. Type list of double-float <strong>Buchholz</strong> relays<br />
7.1. Double-float <strong>Buchholz</strong> relays with threaded connection<br />
h1<br />
12<br />
Type<br />
Internal description<br />
DIN description<br />
04<br />
(BG 25)<br />
(DG 25)<br />
21<br />
(BG 25 S)<br />
(-)<br />
Type of connection<br />
Threaded<br />
connection<br />
G 1½ “<br />
Threaded<br />
connection<br />
G 1½ “<br />
Figure 15 - Dimensional drawing, type 04<br />
h1<br />
80<br />
h2<br />
80<br />
h2<br />
250<br />
300<br />
350<br />
cm 3<br />
l<br />
250<br />
300<br />
350<br />
cm 3<br />
Figure 16 - Dimensional drawing, type 21<br />
l<br />
f<br />
f<br />
Pipe<br />
diameter<br />
DN (mm)<br />
Flange dimensions<br />
(mm)<br />
Device dimensions<br />
(mm) Weight<br />
(kg)<br />
d1 d2 d3 d4 d5 f l h1 h2 h 3<br />
Suited for<br />
transformer<br />
ratings of<br />
25 - - - - 16 185 235 90 - 4,2 ≤5000 KVA<br />
25 - - - - 16 185 235 90 - 3,6 ≤5000 KVA<br />
170<br />
d1<br />
G11/2"<br />
150<br />
d1<br />
G11/2"<br />
R143
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