Application
This device provides a source of energy for circuit breakers and switch trip coil operation during a loss of AC control Voltage.
Operation:
The capacitor is continuously charged when control power is available, providing energy for normal trip coil operation. Because mechanical relays are not involved, energy for the trip coil operation is immediately available with the loss of control power. When the control power returns, the capacitor automatically charges to supply energy for the next trip coil operation.
Nominal 120VAC, or 240VAC is applied between “INPUT” terminals. This voltage is half wave rectified and applied across the trip capacitors, yielding an output trip voltage. The charge stored in these capacitors is available between “+” and “COMMON” terminals for the breaker trip coil operation. The half wave rectification circuitry provides the advantage of maintaining a common neutral connection from the input and output while still maintaining the charge in the trip capacitor after a loss of control power.
An alarm relay is incorporated to continuously monitor the input and output condition of the device. The relay is normally energized when both input and output voltage are present. If either the input voltage is lost or the output voltage falls below 85% of the normal output level the output alarm contacts transfer to their de-energized state. An LED indicates normal operation (remote LED indicator optional). The LED goes out when the alarm contacts transfer to their de-energized state.
Specifications
- Normal Input Voltage: 240 VAC
- Max. Input Voltage: 280 VAC
- Frequency: DC to 400Hz
- Available Energy: 57 joules
- Trip Capacitor fully charged at Normal Input Voltage: +/-20 % @ 25 °C
- Normal Output Voltage: 338 Volts DC
- Approx. charge time to 90 % @ 25 °C: 570mSec.
- Capacitance: 990 uF (+/-20 % @ 25 °C)
- Temp. Influence on cap.: -10 %@ -30 °C/ ±5 %@+60 °C
- Ambient Operating temperature: -30 °C to 60 °C
- Ambient Storage temperature: -50 °C to 80 °C
- Short Circuit Protection: Continuous
- Mounting: Vertical or Horizontal
- Input Surge Protection: MOV protected to 65 joules single pulse transient
- Output Contact Rating:
- Resistive:
- 5 A, 250 VAC
- 5 A, 30 VDC
- Inductive:
- 2 A, 250 VAC
- 3 A, 30 VDC
- 1/6 HP, 120 VAC
- 1/3 HP, 240 VAC
NOTES:
- The output contacts are shown in the de-energized condition. Contacts will pick up when input and output voltage is present. If the output DC voltage drops below 85% of the expected operating level or the input voltage is lost, the contacts will change state and the LED indicator will no longer be illuminated.
- Terminals 9 and 10 are for remote LED indication. (To utilize remote indication, install remote LED wiring with cathode to terminal 10 and anode to terminal 9)
- TDR is temperature dependent resistor.
Specifications
| Brand | Electromagnetic Industries |
| Model | CTD-5 |
| Input Range | 240VAC |
| Input Frequency | DC, 50Hz, 60Hz, 400Hz |
| Output | Relay, 338VDC |
| Tariff Code | 8536.30.0000 |
| ECCN | EAR99 |