Intrinsic Safety Barrier (Product: Type SG, SH and SL)
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Type
SG, SH and SL Dual-Channel Intrinsic Safety Barriers -- Probably the most compact
and highest powered I.S. barriers you will find anywhere. With a footprint measuring
just 4.5 x 3/4" it occupies a mere 1.7 sq-in of enclosure real estate per channel.
Entity approved to UL-913 for Class 1, Div 1 and 2, Group D. Also MSHA approved
intrinsically safe (I.S.), carrying both IA certifications and "G/H/L" letter
classifications for US mining, plus an "L" Class for Canadian mines. Installs
easily with two #10 screws. Terminals are conveniently located at the top, with
ready access for troubleshooting. Capture-wire terminals speed field wiring;
just strip and tighten for secure connections. We supply all supporting hardware
and accessories, including box mounting, to assure proper, failsafe usage. Engineered
for quality, safety, performance and economy, this fine US-built barrier product
will fit into your next I.S. monitoring project.
Intrinsically Safe (I.S.) Dual Channel Barrier |
- Three model for optimum voltage/current |
- Uniquely passes AC and DC power and signals |
- High packing density 3 sq. in |
- Compatible with all Rel-Tek classified sensors. |
- MSHA approved and classified G,H & L for methane. |
- Class I, Div. 1 and 2 Group D UL 913 |
Type/Model
|
Type SG/ Double-G
|
Type SH/ Double H
|
Type SL/ Double L
|
Vmax |
14.67V |
19.09V |
16.03V |
Imax |
1.22A |
0.70A |
0.90A |
Ca |
15uF |
4uF |
7uF |
La |
300uH |
1000uH |
550uH |
MSHA I/S Evaluation |
IA-566 |
IA-566 |
IA-566 |
MSHA (MWMS) Class/Issue |
G/47 |
H/35 |
L/33 |
Vin (max) |
18V |
20V |
18V |
Ri (3 per channel) 1% |
12.1ohms |
27.4ohms |
18.2ohms |
Rtotal (end to end + fuse) |
39.8ohms |
85.7ohms |
58.1ohms |
Internal fuse (fast blow) |
0.25A |
0.25A |
0.25A |
Max Safe Area Voltage |
250Vrms |
250Vrms |
250Vrms |
|