Cag 1737
Cag 1737
Cag 1737
CAG 37 relay
withdrawn from case
Technical data
Ratings
1A or 5A
50Hz or 60Hz
Settings
The instantaneous phase fault o/c
and earth fault o/c settings are:
10 - 80%, 100 - 800%, 50 - 400%,
250 - 2000% continuously
adjustable
Figure 1:
Operating time Operating time/current characteristic.
Refer Figure 1.
Transient overreach
Less than 1% for system angles up
to 88º on all settings.
Drop-off/pick-up ratio
Not less than 80% of setting current.
Thermal rating
CONTINUOUS:
Minimum setting current subject to
maximum of 20 A.
SHORT TIME:
Maximum setting current for 15s.
Accuracy
±10% with Error class E10 as per BS
142 and 10 as per IS:3231.
Insulation
The relay meets the requirements of
IS 3231/IEC 255.5 Series C-2kV for
1minute.
Figure 2:
Typical external and internal connection diagram
for CAG 37 relay
Burdens
at rated current 0.06 0.2 0.14 0.01 0.2 1.17 0.01 0.12
Information required
with order
Dimensions and weights
1. Single or triple pole
Maximum overall dimensions Approximate
Relay Case size Height Width Depth* gross weight 2. Current transformer
mm mm mm Kg. secondary rating
CAG 17 1D 233 170 203 4.0 3. Setting range
CAG 37 1D 233 170 203 5.0 4. Frequency
* Add 76 mm. for maximum length of terminal studs, alternatively,
29 mm. for terminal screws.
The approximate gross weights given above are inclusive of
cartons, mounting appendages and terminal details.
The relays comply fully with the requirements of IS 3231 and are
suitable for use in normal tropical environments.
ALSTOM Limited Pallavaram Works: 19/1, GST Road, Pallavaram, Chennai-600 043. India.
Tel: 91-044-2368621 Fax: 91-044-2367276 Email: plw.applications@alstom.sprintrpg.eml.vsnl.net.in.
© 1998 ALSTOM Limited
Our policy is one of continuous development. Accordingly the design of our products may change at any time. Whilst every effort is made to produce up to date literature, this brochure should
only be regarded as a guide and is intended for information purposes only. Its contents do not constitute an offer for sale or advice on the application of any product referred to in it.
ALSTOM Limited cannot be held responsible for any reliance on any decision taken on its contents without specific advice.