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INTELLIGENT MOTOR PROTECTION RELAY
Delta-Star Converter for Energy Saving
Current range
Enquire about this productTECHNICAL INFORMATION
Know your product.
Product Details
| Power Source | 3 Phase 4 Wire [ R-Y-B-N] |
|---|---|
| CT Type | In built in 0.25-5A / DIN Rail Mount Phase CT Unit in 4-61 A / External Phase CTs for above 61 A |
| Voltage Type | AC |
| Application | i MCC & Energy Saving |
| Display | Back lit LCD 16 X 2 |
| Mounting | Door Mount [Door Cut out 92 X 92 mm] |
| Output Contact | P-NO & P-NO-NC [3 A 240VAC] |
Protections
- Single Phasing Protection Current
- Single Phasing Protection Voltage
- Over Load Protection
- Over Voltage Protection
- Under Load Protection
- Under Voltage Protection
- Phase Un-balance
- Phase Reversal Protection
- Locked Rotor Protection
- Short Circuit Protection
- Earth Fault Protection
Protections
- C
- V
- OL
- OV
- UL
- UV
- Ub
- Ph-r
- L
- S
- E
| Display | Current Voltage P.F KW KWh Operating Hour Start Counter Trip Counter Current Status at Last Trip Voltage Status at Last Trip through. |
|---|---|
| Standar Features | Selectable IT Curve OR Definite Time Selectable Trip Time for SPP & UL Selectable Rotor Locked Value RS-485 Communication Digital Timer for Star-Delta Starter In-built Delta-Star Converter for purpose of Energy Saving |
| Optional Feature | Add On Current Module For Remote Monitoring of Current. 4 to 20mA O/P w.r.t. Running KW value Add On Module 4 to 20mA O/P w.r.t. Running KW value |
Principle of Operation
When the motor is loaded for less than 50% of Motor’s full load capacity in terms of power, the motor can be switch over to Star for Energy Saving purpose. Again when load increases beyond 50% of Motor’s full load capacity in terms of power it will automatically convert to Delta without disturbing process.
Motors used to operates high inertia loads require higher capacity motors to meet the starting torque requirements. While in normal running the same motors draw very lesser power than its capacity. In such a cases motor can be start with Star-Delta Starter & as it start to draw a 50 % lower power than its capacity, it can be run in Star to improve its Power Factor and hence sizable amount of Energy can be save.
In such cases, if the motors are connected with DOL starter are worthwhile to convert to a Star Delta starter along with i.MWM-IO/SDS module to get Energy Saving.
Advantages
Energy saving
Reduction in KVA , contributing to reduction in maximum demand
Improvement in power factor
Motor runs cooler leading to increased motor life.
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