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參數(shù)資料
| 型號： | H470156400 |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 61K |
| 代理商： | H470156400 |
2
Specifications are subject to change without notice (26.10.99)
H 470
The relay measures on its own
3-phased power supply and
operates when all phases are
present and the phase se-
quence is correct.
Example 1
Own power supply
monitoring
The relay is for monitoring
that the power supply has
correct phase sequence and
that all phase voltages are
present. The relay shall be
mounted in front of the fuses
of each load.
Example 2
Load monitoring
The relay releases in case of
Mode of Operation
interruption of one of the
phases, provided that the
voltage regenerated by elec-
tric motors on the interrupted
phase does not exceed 70%
of the nominal voltage. If it
exceeds this value the con-
nection cannot be recommend-
ed (see description ex. 3).
Example 3
If the value of the regene-
rated voltage is slightly higher
than 70% of the nominal volt-
age, the relay releases when
neutral is connected to termi-
nal 21 as sensitivity is im-
proved.
Reaction time
τ
= 0.5 s, worst case reaction
time may be up to 5 x
τ
Indication for
Power supply ON
Output ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Weight
LED, green
LED, red
(IEC 60947-1)
IP 20 B/front IP 40 D (IEC 60529)
3 (IEC 60664)
-20° to +50°C (-4° to +122°F)
-50° to +85°C (-58° to +185°F)
300 g
Wiring Diagrams
Operation Diagram
Phase L1, terminal 22
Phase L2, terminal 23
Phase L3, terminal 24
Relay ON
Example 1
Example 2
H 470
H 470
H 470
Example 3
μ
μ
μ
General Specifications
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