DC discharge bank TORKEL900

constant currenttestfor battery

About the product
The TORKEL900 series battery discharge test systems are fourth-generation discharge analysers designed for industrial battery capacity verification and maintenance programmes. Tests can be run at constant current, constant power, constant resistance, or following a pre-selected load profile. When connected to a BVM battery voltage monitor, a TORKEL900 records individual cell voltages during the entire test and operates as a standalone discharge test system. The units measure total battery current using a DC clamp-on ammeter and regulate the discharge to the selected level. Built-in protection alarms and automatic stop behaviour prevent deep discharge and overheating. Results are stored internally and can be exported to a PC via USB.

Key features

• High discharge capability: up to 220 A per TORKEL unit; higher current achievable by linking multiple units or using TXL extra load units.
• Standalone cell-level testing with BVM connection — individual cell voltage monitoring and cell bar display during tests.
• Multiple discharge modes: constant current, constant power, constant resistance, and programmable load profiles.
• On-line testing capability — perform tests without removing the battery from service.
• DC clamp-on ammeter for total current measurement; supports external current probes with configurable mV/A ratio.
• Safety features: blocked-airflow detection, spark-free design, emergency stop button and automatic end-of-discharge alarm/stop.
• Data handling: internal memory and USB export; compatible with TORKEL Viewer software and firmware updates.

Models and capacity
The TORKEL900 series comprises models 910, 930 and 950. Configurations differ by maximum current (up to 220 A per unit), maximum voltage (up to 500 V depending on options) and available features. Maximum power per single unit is 15 kW (available current depends on battery voltage).

Capacity testing and result interpretation
A capacity test (Ah) provides a quantitative measure of a battery's available capacity (current × time). Select a test duration close to the battery duty cycle for consistent trend analysis (typical durations: 3, 4, 5 or 8 hours). Typical end-of-discharge voltages for lead-acid cells are 1.75 V or 1.80 V per cell. If the battery reaches end-of-discharge significantly earlier than expected (for example at ~80% of expected time), replacement should be considered. Apply temperature correction when calculating capacity.

Expandability, accessories and software

• BVM battery voltage monitor for individual cell monitoring and real-time display.
• TXL extra load units to increase aggregate discharge current.
• Optional DC clamp-on current probes (e.g. 1000 A probe; configure mV/A accordingly).
• TORKEL Viewer software and firmware packages for data review, analysis and updates.

Technical specifications (summary)

• Series / models: TORKEL900 — models 910, 930, 950.
• Max discharge current: up to 220 A per TORKEL unit (higher when linking units or using TXL).
• Max voltage: up to 500 V (model and option dependent).
• Max power per unit: 15 kW (current depends on battery voltage).
• Discharge modes: constant current, constant power, constant resistance, programmable load profile.
• Measurement: DC clamp-on ammeter for total current; supports external probe input with configurable mV/A.
• Data storage and export: internal memory; USB export to PC.
• Power supply: mains.
• Safety: blocked airflow detection, spark-free design, emergency stop, end-of-discharge alarm/stop.