UL Catalog 2024-2025 - Flipbook - Page 72
DISPENSER HOOK
ISOLATION
The FE PETRO® dispenser hook isolation device prevents
electrical feedback between dispenser hook circuits as
required by most electrical codes.
HIGHLIGHTS
• Optically isolates inputs from up to eight dispensers,
preventing damage to dispenser relay boards caused by
cross-phasing.
• Prevents electrical feedback between dispenser hook circuits
during periods of maintenance and service as required by
NEC 514-13, 2002 and other international codes.
• Can be supplied factory-wired in tandem with the FE
PETRO® Smart Controller or the FE PETRO® standard
control box.
• Eliminates false STP run due to voltage leakage of multiple
dispensers connected in parallel.
• Fuse-protected output to submersible pump controller.
SPECIFICATIONS
Enclosure size
8½" × 5" × 3" (215 mm × 127 mm × 76 mm)
Inputs
Eight optically isolated inputs from dispenser
• The STP-DHI can retrofit to any existing site.
INPUT 110V
NEUTRAL
OUTPUT 110V
NEUTRAL
TO ADDITIONAL
STP-DHI(S) POWER SUPPLY
& NEUTRAL TERMINALS
*
TO ADDITIONAL STP-DHI(S)
HOOK OUT TERMINALS
STP-DHI
RV5
- One STP-DHI required per product grade for
up to eight dispensers
- 120 V 30 V A input from supply, eight 120 V
10mA inputs from dispensers
RV5
FUSE, 250 VAC, 1 AMP
(FAST-ACTING TYPE)
*
Output fuse rating
250 V 1A, fast-acting
Surge protection
300 Volt surge protection
Maximum ambient
temperature rating
120° F
LEDs
LEDs indicate when source power is applied
and dispenser hook signals are present
Compatibility
Compatible with any submersible
pump controller
NEUTRAL WIRE
TERMINAL
120 VOLT
SUPPLY WIRE TERMINAL
DISPENSER #1 (SUPPLY & NEUTRAL),
TYPICAL WIRING FOR ALL DISPENSERS
Wiring is polarity-sensitive when multiple units are connected together.
- cULus listed
Conventional
Approvals /
Certifications
1
2
FROM
DISPENSERS 3
STP
CONTROL
BOX
4
STP-DHI
1
FROM
DISPENSERS 2
(UP TO 8
3
PER DHI)
4
72
STP-DHI
STP
CONTROL
BOX
- Consult factory for other
applicable approvals
- Franklin Fueling Systems is an
ISO 9001 Certified Manufacturer
