主要产品

CAN总线显示器

 
 
 
 
 
 
 

振动开关

 
 
 
 
 
 
 
 
 
 

发动机J1939总线产品

 
 
 
 
 
 
市场应用
 
 
 

工业市场

 

石油天然气业绩案例

 
最新消息
 

展览计划

 
 
 

 

 

MURPHY SM135 12/24 Automatic switch mode battery charger
电池充电器

 

MURPHY SM135 is a highly efficient performance charger, designed for continuous float charging and standby battery applications. Switch mode technology gives major advances in power supply and battery charger design: compact and lightweight construction, improved efficiency and low heat dissipation, wide supply voltage tolerance and low output ripple. The result is fast, accurate charging, for optimum battery life and reliability.

 

Features

  • High rate duty float charging, 4.5A
  • Selectable DC output for 12V or 24V nominal, lead acid or NiCd batteries.
  • Low ripple, switch mode output for both sealed or vented batteries
  • Fully automatic charge regulation
  • Boost mode
  • Charge fail alarm output
  • Universal 95 to 277 VAC power supply
  • Open-frame circuit board, DIN-rail mounted

 

 

The wide input voltage range, from 95-277VAC, allows the charger to be used with all common single phase power supplies without adjustment. The very smooth DC output (<1% ripple) makes the SM135 suited for charging sealed VRLA, AGM and Gel batteries, as well as standard vented lead acid and NiCd cells. The charger uses an open-frame circuit board construction with DIN rail clips, for mounting in an enclosed control panel.

Normal operation
In charge recovery mode, the SM135 gives a constant current output, maximizing the charge recovery rate. As battery voltage approaches the charger’s ‘knee point’(13 Volts for 12 Volt LA – see graph right), the charger reverts to float charge mode, ramping down output current to maintain optimal cell voltage (without overcharge), while supporting additional battery loads up to the rated maximum current.

Charge current vs voltage
The SM135 can be configured for one of four different charge output voltage settings: circuit board pin header links allow selection of 12V or 24V nominal output voltages, and lead acid or NiCd battery types – see Calibration section.

Boost mode
Boost mode gives an increase in output charge voltage, e.g. for periodic equalizing of charge across cells. To activate boost mode, link the BST terminal to battery negative/ground, ideally using a time relay to limit the boost time period. The boost voltage level is dependent on the selected nominal voltage and battery type – see Calibration section. For each configuration, boost voltage may fine-adjusted if required using one of four potentiometers.

Charge fail output
A charge fail output provides for remote signalling of charger and battery fault conditions.
The output is a solid state transistor rated 200mA, suitable for driving a relay coil, indicating LED (with resistor) or lamp, or control panel annunciator. The output is active (+DC) in normal operation, except momentarily (approx 150milliSec every 2 minutes) when the SM135 switches off the DC output to check battery voltage. The output de-activates during fault conditions, e.g. during AC supply input failure, or if measured battery voltage falls below 66% of nominal.

Output Enable/Inhibit
The SM135 charge output may be remotely enabled or disabled, should this be required for the application. Connect the EN terminal to battery positive to enable the DC charge output, or make EN open-circuit to disable. The charge output also deactivates automatically if measured battery voltage falls below a set level (normally 62% of nominal voltage, adjustable via R42).

 

 

Specifications

  • Power Supply
    • Operating voltage: 95 to 277 V AC
    • Operating frequency: 47 – 440 Hz.
  • DC Charge Output
    • Nominal DC output: 4.5A, switchable 12 or 24V, lead acid or NiCd
    • Float/boost voltage: See ‘output calibration' table
    • Output ripple: <1%
    • Line regulation: <1%
    • Load regulation: <1%
  • Charge Fail Output
    • Output type: solid-state transistor, active high (+DC), 200mA max., deactivated during fault conditions.
  • Physical
    • Operating temperature: –10 to +55°C / 14 to +131°F
    • Dimensions: see Dimensions diagram
    • Weight: 0.5 kg / 1.1 lb
    • Electromagnetic compatibility: EN50081-2, EN50082-2

Dimensions

 

 

Output Calibration

Standard battery types float volts (V DC) boost volts (V DC)
12V Lead acid (6 cells) 13.7 14.5
NiCd (10 cells) 14.2 14.7
24V Lead acid (12 cells) 27.2 28.2
NiCd (20 cells) 28.4 29.4

Standard units are supplied with calibration set for 12V lead acid. Calibration may be selected using one of four pairs of circuit board pin header links:

 

Electrical connection

 

Notes:

  1. F1, AC supply fuse, 5A (anti-surge)
  2. F2, MOSFET protection fuse, 5A (quick-blow)
  3. Charge Fail output shown driving an alarm relay, maximum coil rating 200mA, contacts shown in de-energised (fault) state
  4. For boost mode, link the Bst terminal to battery negative, ideally via time relay contacts to automatically limit boost time.
  5. 2 x Gnd/Earth terminals are internally connected to charger chassis. Charger DC output is isolated from chassis/ground.

How to Order

Note: This item is sold exclusively through our UK office. Please email sales@cnmec.biz for inquiries.

Stock Code Model Description
42.70.4500 SM1351224CD SM135 battery charger, 4.5A, selectable 12 or 24V output

Note: the above is supplied with DC output set for 12V lead-acid. For other battery types, see calibration above.

 

Sales Literature

 

 


Murphy Instrument Distributor

美国DMK Engineering Solutions公司
信德迈科技(北京)有限公司 CNMEC Technology

地址:北京市朝阳区望京街10号望京SOHO - T1- C座2115室
邮编:100102
电话:010 - 8428 2935,8428 9077,8428 3983
手机:13910962635
网站:Http://www.cnmec.com

VIEW ONLINE CATALOG >>
REQUEST A CUSTOM PANEL QUOTE >>


QQ: 209136943
Email: sales@cnmec.biz
传真:010-8428 8762

 


京ICP备08000876号-3
京公网安备 101050201974