DC LED switching mode Power Supply

Q: What is the difference between a contactor and a relay?

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.

Q: How do I calculate the correct contactor size for a motor?

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.

Q: Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Q: Are auxiliary contacts included?

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.

About the DC LED switching mode Power Supply

The DC LED switching mode Power Supply is part of the ELEHPD S Series range. Features: High efficiency, high reliability and low cost Switch input voltage range choice 100% full load and machine test Protection characteristics: short circuit/overload Air cooling Working frequency 37 KHz ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Full catalogue description: DC LED switching mode Power Supply SingleOutput adjustable power supply 200w

Typical applications

Motor control centres and pump or fan starters
Machine building, conveyors, packaging and CNC equipment
HVAC control panels and building automation
Water treatment, irrigation and pumping stations
Panel retrofits replacing electromechanical control gear

How to specify the right S Series

Size the contact rating for the inductive load, not just the resistive current (AC-3 duty for motors)
Check the coil voltage and frequency available in the panel: 24 V DC, 110 V, 230 V or 400 V AC
Confirm the auxiliary contact count needed for the control and indication circuit
Match the enclosure rating to the environment (IP20 inside a panel, IP65 on the machine)

Specifications

Features:
High efficiency, high reliability and low cost
Switch input voltage range choice
100% full load and machine test
Protection characteristics: short circuit/overload
Air cooling
Working frequency 37 KHz

200W Single Output Switching Power Supply (SMPS) S-200W

MODEL S-200-5 S-200-12 S-200-24 S-200-27 S-200-48

DC VOLTAGE 5V 12V 24V 27V 48V

RATED CURRENT 40A 16.5A 8.3A 7.4A 4.2A

CURRENT RANGE 0 ~ 40A 0 ~ 16.5A 0 ~ 8.3A 0 ~ 7.4A 0 ~ 4.2A

RATED POWER 200W 200W 200W 200W 200W

RIPPLE & NOISE (max. ) 150mVp-p 150mVp-p 180mVp-p 240mVp-p 240mVp-p

VOLTAGE ADJ. RANGE 4.5 ~ 5.7V 10.6~ 13.2V 21 ~ 28V 24 ~ 30V 43 ~ 53V

VOLTAGE TOLERANCE ± 2.0% ± 1.0% ± 1.0% ± 1.0% ± 1.0%

LINE REGULATION ± 0.5% ± 0.5% ± 0.5% ± 0.5% ± 0.5%

LOAD REGULATION ± 1.0% ± 0.5% ± 0.5% ± 0.5% ± 0.5%

SETUP, RISE, HOLD TIME 100ms, 50ms, at full load

VOLTAGE RANGE 88 ~ 132VAC / 176 ~ 264VAC by switch 248 ~ 370VDC

FREQUENCY RANGE 47 ~ 63Hz

EFFICIENCY (Typ. ) 78% 82% 85% 86% 87%

AC CURRENT 3.2A/115VAC 16A/230VAC

INRUSH CURRENT (max. ) 4A/115VAC 36A/230VAC

LEAKAGE CURRENT < 3.5mA / 240VAC

OVERLOAD 105 ~ 135% rated output power

Protection type: Hiccup mode, recovers automatically after fault condition is removed.

OVER VOLTAGE 5.75 ~ 6.75V 13.8 ~ 16.2V 27.6 ~ 32.4V 33.7 ~ 39.2V 57.6 ~ 67.2V

Protection type: Hiccup mode, recovers automatically after fault condition is removed.

FAN CONTROL O. T. P. RTH1 ≥ 65º C FAN ON, ≤ 55º C FAN OFF, ≥ 70º C (5 ~ 15V)

RTH1 ≥ 70º C FAN ON, ≤ 65º C FAN OFF, ≥ 80º C (24 ~ 48V)

Protection type: Hiccup mode, recovers automatically after fault condition is removed.

WORKING TEMP. -10 ~ +60º C (Refer to output load derating curve)

WORKING HUMIDITY 20 ~ 90% RH non-condensing

STORAGE TEMP., HUMIDITY -20 ~ +60º C, 10 ~ 95% RH

TEMP. COEFFICIENT ± 0.03%/º C (0 ~ 50º C)

VIBRATION 10 ~ 500Hz, 2G 10min. /1cycle, 60min. each along X, Y, Z axes

SAFETY STANDARDS Design refer to UL1950

WITHSTAND VOLTAGE I/P-O/P: 1.5KVAC I/P-FG: 0.5KVAC O/P-FG: 0.5KVAC

ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC

MTBF 188.7K hrs min. MIL-HDBK-217F (25º C)

DIMENSION 199*110*50mm (L*W*H)

PACKING 20PCS /CTN 0.85KG

Frequently asked questions about the DC LED switching mode Power Supply

What is the difference between a contactor and a relay?

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.

How do I calculate the correct contactor size for a motor?

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.

Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Are auxiliary contacts included?

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.