ABB SD821 After sales service is provided for the control card of the power supply device

Description

Packaging details: if you need an urgent delivery order, please feel free to contact us, and we will do our best to meet your needs.

Price problem: if you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.

Opening and closing release- YO/YC
The opening and closing releases enable the circuit-breaker to be controlled remotely. Opening
is always possible, while closing is available only when the closing springs of the operating
mechanism are loaded and the circuit-breakers is ready to close.
The releases operate by means of minimum impulse current duration time of 100 ms.
Furthermore, they can operate in permanent service. In this case, if opening command is
given by means of the opening release, the circuit-breaker can be closed by de-energizing the
opening release and, after a time of at least 30 ms, by controlling the closing.
Electrical diagram reference: figure 75, 77
General characteristics
Power supply (Un) AC DC
24V • •
30V • •
48V • •
60V • •
110V…120V • •
220V…240V • •
240V…250V • •
380V…400V • –
415V…440V • –
480V…500V • –
Operating limits (IEC60947-2 standards) YO/YO2: 70%…110% Un
YC/YC2: 85%…110% Un
Inrush power (Ps) 300VA 300W
Continuous power (Pc) 3.5VA 3.5W
Opening time (YO/YO2)
E1.2 20 ms
E2.2 … E6.2 35 ms
Closing time (YC/YC2)
E1.2 50 ms
E2.2 … E6.2 50 ms
Second opening and closing release – YO2/YC2
For certain installations the redundancy of mechanisms and circuit-breaker operating circuits is
often requested. To answer these needs, the SACE Emax 2 circuit-breakers can be equipped
with double opening release and double closing release. The technical characteristics of the
second opening release remain the same as those of the first opening and closing release.
A double opening release can be used for E2.2, E4.2 and E6.2 circuit-breakers; an
undervoltage release cannot be used in this case.
Electrical diagram reference: figure 72, 79