WISCO International (Newmar - DC-DC Converters / ISP Series)

ISP series DC-DC converters offer the benefits of an isolated converter plus protection against line transients and voltage spikes typically caused by large DC motors and switching transients. A special circuit clamps input spikes to a safe level, protecting both the converter and the powered equipment.

Isolated and ISP Series

This product series is further enhanced with extra rugged construction of case and internal components for severe vibration applications.

Input range: 18 - 140 VDC; positive, negative or floating ground; output: 12 or 24 VDC, 3-18 amps. (35 amps special order).

Features

Reverse polarity protection
Input fuse
Output fuse
Current limiting, short circuit proof output
Automatic resetting thermal shutdown
Input transient protection
High/low input voltage shutdown
Polyurethane conformal coating on PC board
Power "ON" light
On/off switch

Model	Input	Output	Output Amps		Case	Weight
Model	Voltage	Voltage	Intermittent	Continuous	Size	Lbs.	Kg.
36-12-6 ISP*	18-65	13.6	6	6	C-7	5	2.3
36-24-3 ISP	18-65	24.5	3	3	C-7	5	2.3
36-12-18 ISP	20-65	13.6	18	10	C-6	12	5.5
36-24-9 ISP	20-65	24.5	9	5	C-6	12	5.5
36-12-35 ISP**	20-56	13.6	35	20	C-9	7	2.7
72-12-6 ISP	42-90	13.6	6	6	C-7	5	5.5
72-24-3 ISP	42-90	24.5	3	3	C-7	5	5.5
72-12-18 ISP	42-90	13.6	18	10	C-6	8	3.6
72-24-9 ISP	42-90	24.5	9	5	C-6	8	3.6
110-12-6 ISP	80-140	13.6	6	6	C-7	5	2.3
110-24-3 ISP	80-140	24.5	3	3	C-7	5	2.3
110-12-18 ISP	80-140	13.6	18	10	C-6	8	3.6
110-24-9 ISP	80-140	24.5	9	5	C-6	8	3.6

* This model EMC and safety CE certified for sales within the European Union

** Build to order only  10 unit minimum

Case Size

Model	Inches			Centimeters
Model	Height	Width	Depth	Height	Width	Depth
C-6	6.0	4.6	13.7	15.2	11.7	34.8
C-7	4.25	5.9	7.7	10.8	15.0	19.6
C-9	6.0	6.8	16.5	15.2	17.3	41.9

Performance Specifications:

Output:13.6 VDC (internally adjustable 12.6-14.5) or 24.5 VDC (or specify)

Ripple:150 mV P-P

Regulation: +/- 2% Line/Load

Duty Cycle Ratings*: Intermittent - 20 minutes, max on time, 20% duty, Continuous - 24 hours, 100% duty

*Current limit set at approximately 105% of intermittent rating

Idle Current: (including power "on" indicator light) approx.50 mA

Operating Temp: See temperature rating curves (below)

Switching Frequency: 70Khz

Efficiency: 85% - typical.

DC Isolation: (Input/Output, Input/Chassis, Output/Chassis): 1,400 VDC

Temperature / Amperage Derating Curves

Options

Operation as a battery charger or parallel/ redundant operation (contact factory)
High vibration mounting kit
Other "Special" output voltages available

Surge Protection

Transient Energy Capability:

36 VDC Input 140 joules (Watt-Seconds) Peak Current, 2,000 Amps
72 & 110 VDC Input 100 Joules (Watt-Seconds) Peak Current, 12,000 Amps

Operating Temperature

-40� C to +80� C Thermal shutdown @ 85� C Case Temperature