
NES SERIES HIGH EFFICIENCY SWITCHING POWER SUPPLY NES25W Features: • Universal AC input/Full range • Protections: Short circuit / Overload…
The NES SERIES POWER SUPPLY NES-25W is part of the ELEHPD NES Series range. NES SERIES HIGH EFFICIENCY SWITCHING POWER SUPPLY NES25W Features: • Universal AC input/Full range • Protections: Short circuit / Overload / Over voltage / Over temperature • Cooling by free air convection 100% full load burn-in test • 2 years warranty Details ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.
Features :
•Universal AC input/Full range
•Protections: Short circuit / Overload / Over voltage / Over temperature
•Cooling by free air convection 100% full load burn-in test
•2 years warranty
Details:
| MODEL | NES-25-5 | NES-25-12 | NES-25-15 | NES-25-24 | NES-25-48 | |
| OUTPUT | DC VOLTAGE | 5V | 12V | 15V | 24V | 48V |
| RATED CURRENT | 5A | 2.1A | 1.7A | 1.1A | 0.57A | |
| CURRENT RANGE | 0~5A | 0 ~ 2.1A | 0-1.7A | 0-1.1A | 0 - 0.57A | |
| RATED POWER | 25W | 25.2W | 25.5W | 26.4W | 27.36W | |
| RIPPLE & NOISE (max.) Note.2 | 80mVp-p | 120mVp-p | 150mVp-p | 200mVp-p | 240mVp-p | |
| VOLTAGE ADJ. RANGE | 4.75 ~ 5.5V | 10.8 -13.2V | 13.5-16.5V | 21.6-26.4V | 43.2 - 52.8V | |
| VOLTAGE TOLERANCE Note.3 | ±2.0% | ±1.0% | ±1.0% | ±1.0% | ±1.0% | |
| LINE REGULATION Note.4 | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | |
| LOAD REGULATION Note.5 | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | |
| SETUP, RISE TIME | 500ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load | |||||
| HOLD UP TIME (Typ.) | 50ms/230VAC 10ms/115VAC at full load | |||||
| INPUT | VOLTAGE RANGE | 85 ~ 264VAC 120-370VDC | ||||
| FREQUENCY RANGE | 47 - 63Hz | |||||
| EFFICIENCY (Typ.) | 78% | 83% | 84% | 86% | 86% | |
| AC CURRENT (Typ.) | 0.55A/115VAC 0.35A/230VAC | |||||
| INRUSH CURRENT (Typ.) | COLD START45A | |||||
| LEAKAGE CURRENT | <2mA/240VAC | |||||
| PROTECTION | OVERLOAD | 110 ~ 150% rated output power | ||||
| Protection type: Hiccup mode, recovers automatically after fault condition is removed | ||||||
| OVERVOLTAGE | 5.75 - 6.75V | 13.8 ~ 16.2V | 17.25- 20.25V | 27.6 ~ 32.4V | 55.2 - 64.8V | |||||
| Protection type: Shut down o/p voltage, re-power on to recover | ||||||
| ENVIRONMENT | WORKING TEMP. | -20 ~ +60°C (Refer to "Derating Curve") | ||||
| WORKING HUMIDITY | 20 ~ 90% RH non-condensing | |||||
| STORAGE TEMP., HUMIDITY | -40 ~ +85°C, 10 ~ 95% RH | |||||
| TEMP. COEFFICIENT | ±0.03%/°C (0 ~ 45°C) | |||||
| VIBRATION | 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes | |||||
| SAFETY & EMC (Note 7) | SAFETY STANDARDS Note.6 | UL60950-1, CB(IEC60950-1),CCC GB4943.1:2011 approved | ||||
| WITHSTAND VOLTAGE | l/P-0/P:1.5KVAC l/P-FG:1.5KVAC 0/P-FG:0.5KVAC | |||||
| ISOLATION RESISTANCE | l/P-O/P, l/P-FG, 0/P-FG:100M Ohms / 500VDC / 25°C/ 70% RH | |||||
| EMC EMISSION | Compliance to EN55022 (CISPR22) Class B, EN61000-3-2,-3 | |||||
| EMC IMMUNITY | Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, EN61000-6-1, light industry level, criteria A | |||||
| OTHERS | MTBF | 411,47Khrs min. MIL-HDBK-217F (25°C) | ||||
| DIMENSION | 99*82*35mm (L*W*H) | |||||
| PACKING | 0.3Kg; 45pcs/14.5Kg/0.66CUFT | |||||
| NOTE | 1.All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°C of ambient temperature. 2.Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1 uf & 47uf parallel capacitor. 3.Tolerance : includes set up tolerance, line regulation and load regulation. 4.Line regulation is measured from low line to high line at rated load. 5.Load regulation is measured from 0% to 100% rated load. 6.For the request of GB4943.1 ,the power supply is only suitable for use in the altitude 2000m below and the non tropical climate condition. 7.The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” |
A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.
Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.
Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.
Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.







