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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification |
| Manufacturer | Bender GmbH & Co. KG |
| Part Number | 107TL47 (Compatible with 107TD47 family) |
| Monitored Grid Type | Single-phase and three-phase AC IT isolated power systems |
| Nominal System Voltage (U_n) | AC 230 V (40–460 Hz) |
| Insulation Response Value (R_{an}) | 50 kΩ to 500 kΩ (Adjustable) |
| Max System Capacitance (C_e) | \le 5\ \muF |
| Transformer Monitoring | Integrated load current monitoring & PTC temperature inputs |
| Communications Protocol | RS-485 with Bender BMS protocol (Interfaces to MK2430 remote displays) |
| Alarm Output | 1 potential-free changeover contact (Rated AC 250 V / 5 A) |
| Standards Compliance | IEC 60364-7-710, DIN VDE 0100-710, IEC 61557-8 |
Product Introduction & Supply Chain Strategy
This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned operating room, and not refurbished. All modules undergo rigorous quality verification to ensure OEM-level reliability. The Bender 107TL47 ISOMETER serves as the primary line isolation monitor for medical IT power supplies, continuously tracking insulation resistance, transformer thermal load, and current consumption in critical care areas and surgical suites.
From a Total Cost of Ownership (TCO) perspective, maintaining a verified New Surplus 107TL47 module on-site is a essential insurance policy against life-safety compliance violations and unscheduled surgical room shutdowns. Hospital electrical standards enforce strict fault-isolation protocols; a failing line isolation monitor requires immediately taking the operating theatre offline. Holding 1 unit as safety stock eliminates lead time variability while protecting against the degraded sensing circuits and internal component drift common in second-hand or refurbished units.
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Execute Lock-Out/Tag-Out (LOTO) procedures on the primary isolated power panel supplying the IT system transformer.
- Put on an ESD wrist strap grounded to the panel enclosure chassis.
- Record all BMS bus addresses, DIP switch settings, and terminal block wire assignments from the original monitor using a digital camera.
Stage 2: Removal
- Disconnect all terminal blocks for system connections (L_1, L_2), earth leads (E, KE), temperature inputs (Z_1, Z_2), and current transformer lines (k, l).
- Unclip the housing from the DIN rail by pulling down on the lower locking tab using a flat-head screwdriver.
- Lift the unit off the rail and place it inside an static-shielding bag.
Stage 3: Installation (Clone & Seat)
- Replicate all configuration settings and address switches on the new 107TL47 module to match the original unit.
- Mount the 107TL47 onto the DIN rail, pressing firmly until the mounting latch snaps securely in place.
- Wire two separate leads directly to Earth ground (PE) using terminals E and KE to ensure continuous earth-wire monitoring. Reconnect all remaining terminal blocks.
Stage 4: Power-On & Testing
- Re-energize the isolated power transformer supply voltage (U_S).
- Verify that the front-panel display initializes and performs a Power-On Self-Test (POST) without active system faults.
- Press and hold the “TEST” button on the front panel to trigger a simulated insulation fault; verify that the local ALARM LED illuminates and the remote MK2430 alarm panel mirrors the trip alert.
107TL47
107TL47
Firmware/Software Versions & Upgrade Notes
- Recommended Version: Standard factory firmware revision supporting BMS-bus protocol v2.x.
- Compatibility Considerations: The 107TL47 integrates seamlessly with classic Bender remote indicator panels (e.g., MK2430 / MK2418) via the two-wire RS-485 BMS interface. When integrating with newer CP700 series control panels, ensure the BMS baud rate on the RS-485 loop is set to 9.6 kbps.
- Firmware Swap Warning: Insulation monitoring devices use factory-calibrated measuring bridges stored in non-volatile memory. Do not attempt field firmware alterations or EPROM swaps between different hardware generations, as this can invalidate factory calibration and break IEC 61557-8 compliance.
Frequently Asked Questions (FAQ)
Is this Bender 107TL47 module genuinely New Surplus?
Yes. This module is 100% Genuine New Surplus. It has never seen field service in a medical or industrial facility and has been stored in original anti-static packaging. We maintain a strict zero-tolerance policy against second-hand, pulled, or refurbished components.
Why should healthcare facilities buy New Surplus instead of cheaper refurbished monitors?
Refurbished medical isolation monitors carry hidden risks like aged optocouplers and degraded measuring resistors, which can lead to false isolation alarms or failed trip responses during real earth faults. A 20–30% premium for New Surplus buys factory-original precision, compliance peace of mind, and long-term lifespan.
What is the lifecycle and availability status of the Bender 107TL47?
The 107TL47/107TD47 series represents a mature platform as Bender transitions newer installations to the iso685 and COMTRAXX family. Sourcing New Surplus units is critical for healthcare engineering departments looking to maintain existing panel installations without doing expensive, full-panel retrofits.
Can I hot-swap this insulation monitoring device while the IT transformer is live?
No. While the IT system itself is designed to run with a single ground fault, removing or reconnecting the monitoring board while energized can create arc transients or interrupt the system’s ground reference (E/KE). Always de-energize the monitor’s supply voltage prior to swapping.
What warranty coverage is included with this product?
Unlike standard short-term warranties on used equipment, our New Surplus Bender 107TL47 board comes with a full 1-year functional replacement warranty backed by static electrical verification testing prior to dispatch.
