ABB 216EA61B Analogue Input Unit

The ABB 216EA61B Analogue Input Unit is the analogue input unit of the ABB REG 216 numerical generator protection system. Per the manual, the 216EA61 input unit receives the analogue measured variables from the 216GW61 input transformer module, digitises them and transfers them to the B448C bus, with 24 analogue input channels (up to two 216GW61 modules). The official REG 216 datasheet specifies 24 inputs sampled simultaneously in groups of six, at a sampling frequency of 600 (720) Hz for 50 (60) Hz power frequency, occupying two rack slots. The 216EA61B version carries order numbers HESG448230R0100 / HESG448230R1(-G) and serves GT11/GT12 generator and transformer protection within the REG 216 system.

Key Specifications:

• Brand: ABB
• Model: 216EA61B
• Type: Analogue Input Unit 
• System: REG 216 — Numerical Generator Protection
• Input Channels: 24 analogue inputs 
• Sampling: Groups of six, simultaneous; 600 (720) Hz at 50 (60) Hz power frequency
• Interface: Digitised data to B448C bus 
• Source Module: 216GW61 input transformer module 
• Application: GT11/GT12 generator and transformer protection
• Rack Space: Two rack slots 
• Country of Origin: Sweden

ABB 216EA61B Analogue Input Unit is the measurement front-end of the REG 216 generator protection system: it takes analogue current and voltage signals from the 216GW61 transformer module, digitises them in groups of six and places the samples on the B448C bus for the protection logic to evaluate (per official manual). Its 24-channel capacity and 600/720 Hz sampling match the 50/60 Hz power systems the REG 216 protects, and the two-slot footprint fits the REG 216 rack scheme.

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