Murphy Modex S10 Specifications

S10 series

AUTOMATIC BATTERY CHARGERS
RATINGS TO 10 AMPS

The S10 is a constant potential, open-chassis battery
charger, suitable for use with either 12V DC or 24V DC,
lead acid or Ni-Cd systems. Although primarily designed
for the diesel generator market, the charger may be
configured for use in a wide range of unattended industrial
applications where standby power is required at all times.

Each unit consists of a transformer, rectifier and control
circuitry. The charger monitors the battery voltage and
delivers as much current as the cells require up to the
current limited maximum, giving a rapid recovery of charge.
Once the battery is fully charged, the charger provides a
low trickle charge to maintain the cells for an indefinite
period at a pre-set float voltage, without overcharging, plus
any additional current required to support a static load.

Also included is a range of on-board fault monitors
complete with volt free relay contacts for remote
alarm signalling.

Standard Features

• Boost function, operated by remote link.

Indication by amber LED.

• Adjustable float and boost voltage levels to meet with

a range of battery types, static loads and operating
conditions. Standard calibrations are:-

BATTERY TYPE FLOAT

VOLTAGE

(V DC)

BOOST

VOLTAGE

(VDC)

Lead acid (6 cells) 13.6 14.1

12 V Ni-Cd (9 cells) 12.8 14.0

Ni-Cd (10 cells) 14.2 15.6
Lead acid (12 cells) 27.2 28.4

24 V Ni-Cd (18 cells) 25.6 28.1

Ni-Cd (20 cells) 28.4 31.2

• Adjustable current limit. Standard versions have a

10 Amp limit, but this may be adjusted downwards
where required (e.g. for lower capacity batteries).

• Output short circuit protection.

• Protection against reverse polarity battery connection

via fuse and red warning LED.

• 3 alarm monitoring circuits: 'charge fail', 'low battery

voltage' and 'high battery voltage', complete with
volt-free relay outputs and LED indicators. The low
battery voltage alarm features a fixed time delay of
approx. 60 secs. to inhibit the signalling of a fault
during normal battery loading (e.g. engine cranking).

Electrical connection of the battery, boost and charge
monitoring relays is via ¼" blade terminals. The AC supply
is connected through separately mounted screw terminals.

When ordering, please specify:-

a) Product type (S10 series)
b) Nominal output voltage (12 or 24 V DC)
c) AC supply voltage (240 or 110 V)
d) Battery type (Lead-acid, or Ni-Cd and number of cells,

or special calibration requirements).

The Generator Controls Division of

R

M020301

Issue 5, revised 07/98

Catalogue section 75

Dimensions (mm)

Overall Fixing Base

Connection

L

42

5

6

7

8

31

F1

S1012, 240V: 1.5A
110V: 3.15A
S1024, 240V: 3.15A
110V: 6.3A

F1, fuse type T, rating:

AC

supply

N

Boost
switch/timer

E

10

9

BCS

battery

charge

fail

high

battery

volts

low

battery

volts

+
–

Product Specification

Power supply:

operating voltages 240 V AC or 110 V AC (specify),

+/– 10%, 50/60 Hz.

Charging output:

nominal output voltage see chart left
voltage stability +/– 1% of nominal
current limit 1 – 10 Amps, factory set
current stability +/– 2% of nominal

Relay outputs:

(ratings for resistive load)

charge fail and low battery volts
high battery volts

volt free SPNC contacts
volt free SPNO contacts
all rated 5 A @ 30 V DC

General:

operating temperature –10 to +55 oC
overall dimensions (h x l x d) 185 x 145 x 155 mm
weight approx. 8.0 Kg
EMC emission/immunity to EN50081-2/EN50082-2

Since 1939

Frank W. Murphy Manufacturer

PO Box 470248, Tulsa, Oklahoma 74147, USA
Tel: + 1 918 627 3550 Fax: + 1 918 664 6146
email: [e-mail]

web: http://www.fwmurphy.com

Frank W. Murphy Southern Division

PO Box 1819, Rosenberg, Texas 77471, USA
Tel: + 1 281 342 0297 Fax: + 1 281 341 6006
email: [e-mail]

Frank W. Murphy Ltd.

Incorporating Modex Automation

Church Road, Laverstock, Salisbury U.K.
Tel: + 44 1722 410055 Fax + 44 1722 410088
Pour service en Français, tél: + 44 1722 410697
email: [e-mail]
web: http://www.fwmurphy.co.uk

Murphek Pty. Ltd.

1620 Hume Highway, Campbellfield, Vic. 3061 Australia
Tel: + 61 3 9358 5555 Fax: + 61 3 9358 5558
email: [e-mail]

Murphy Switch of California

PO Box 900788, Palmdale, California 93590, USA
Tel: + 1 805 272 4700 Fax: + 1 805 947 7570
email: [e-mail]
web: http://www.murphyswitch.com

Murphy de Mexico S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P. México 78384
Tel: + 52 48 206264 Fax: + 52 48 206336
email: [e-mail]

Frank W. Murphy Pte, Ltd.

No. 2 Tuas South Street 2, Sprintecs Building
02-01/02, Singapore 637895
Tel: + 65 863 1398 Fax: + 65 863 0208
email: [e-mail]

Frank W. Murphy Ltd. en France

Tel: [phone] Fax: [phone]
Direct usine Tel: + 44 1722 410697
email: [e-mail]