Contact :
LARA Elekromekanik san.ltd.
TR-41700 DARICA - Kocaeli/Turkiye
Telefon: +90 262 654 18 13 / internal:17
E-mail:
Resonance Damper
What is a Voltage Indicator?
CVI Capacitive Voltage Indicator indicates the voltage presence on M.V. switchgear cubicles by being installed on the capacitive dividers.
Capacitive voltage indicator tells either
voltage present or no voltage present.
About us:
LARA Electromechanical ltd is located in Istanbul (Turkiye). Our general product range is listed below:
- MV Capacitive Voltage Divider Devices (according to IEC 62271-213) for Medium Voltage Distribution Boards.
- Resonance damper for avoiding ferroresonance.
For any related questions do not hesitate to contact us.
The low voltage indoor switchgear device for
elimination of ferroresonance phenomenon.
Ferroresonance is a non-linear resonance phenomenon that can affect power networks. The abnormal rates of harmonics and transient or steady state.
The resonance damper of LARA is a low voltage indoor switchgear device for elimination of ferroresonance phenomenon. It protects voltage transformers
against potential ferroresonance overcurrent by prompt damping actions. Ferroresonance can arise in ungrounded power networks or in the network
where is not directly grounded neutral point. It can occur between voltage transformer inductance and capacitances of system components.
1.Nominal voltage :100-120VAC (open-delta)
2.Nominal Frequency :50/60Hz
3.Activation Voltage :20VAC, 25VAC, 30VAC (20VAC default)
4.Activation Delay :0.5-1.5-2.5-3.5 sec (0.5 sec default)
5.Damping time @ 120V :1 sec
6.Max. operational current :14 A/1 sec
7.Protection Class :IP20
8.Operating temperature :-25°C to +55°C
9.Storage temperature :-40°C to +85°C
10.Humidity :up to %90
11.Dimensions :69 × 86 × 56 mm
12.Weight :0.15 kg
13.Installation :35mm DIN rail (DIN EN 50 022)
14.Connection :Screw, 0.5 - 2.5 mm2 wire
You can stop ferroresonance with Resonance Damper of LARA:
The Resonance Damper;
-eliminates unwanted overvoltage surges.
-protects voltage transformer in case of a ferroresonance situation.
Technical Parameters:
