Description
Product Core Brief
- Model: DS200RTBAG5
- Brand: General Electric (GE)
- Series: Mark V DS200
- Core Function: Penta-bank relay output board with 80 channels
- Product Type: Relay Output Board (80 channels, 5 banks)
- Key Specs: 80 Form C relays | 5 A contacts | Five isolated banks | Removable screw terminals
- Condition: New Surplus.
Product Introduction
The DS200RTBAG5 is an ultra-high-density relay output termination board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides 80 independent Form C relay outputs arranged as five isolated banks of 16 relays each—the absolute highest channel count in the entire Mark V product family.
The “5” designation indicates a penta-bank board (five independent termination sections on one PCB). This is essentially five RTBAG1A boards integrated onto a single assembly. It is designed for the largest turbine control applications requiring maximum relay density: complete auxiliary control for combined cycle plants, large compressor stations, or any system requiring 80 discrete outputs in a single rack slot. Maximum density. Maximum integration. Maximum complexity.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Number of relay outputs | 80 (5 banks of 16) |
| Bank A relays | Relays 1–16 |
| Bank B relays | Relays 17–32 |
| Bank C relays | Relays 33–48 |
| Bank D relays | Relays 49–64 |
| Bank E relays | Relays 65–80 |
| Relay type | Electromechanical, Form C (SPDT) |
| Contact arrangement | Common (C), Normally Open (NO), Normally Closed (NC) per relay |
| Contact rating (resistive) | 5 A @ 250 VAC, 5 A @ 30 VDC |
| Contact rating (inductive) | 2 A @ 250 VAC (cosφ = 0.4), 2 A @ 30 VDC (L/R = 40 ms) |
| Maximum switching voltage | 250 VAC, 125 VDC |
| Maximum switching current | 5 A |
| Coil voltage | 24 VDC nominal (from backplane) |
| Coil current per relay | 15 mA typical at 24 VDC |
| Total backplane current (all relays) | 1200 mA (80 x 15 mA) |
| Coil suppression | Flyback diode (1N4007) across each coil |
| Per-channel indication | Red LED per relay (illuminates when coil energized) |
| Isolation (bank-to-bank) | 1500 VAC for 1 minute between any two banks |
| Isolation (coil to contacts per bank) | 1500 VAC for 1 minute |
| Terminal type | Removable screw terminal blocks, rising cage, 12–24 AWG (3 terminals per relay), color-coded per bank |
| Terminal torque | 0.5–0.6 Nm (4.4–5.3 lb-in) |
| Connection to output modules | Five 64-pin ribbon cables (one per bank, included) or backplane with bank select |
| Operating temperature | −30°C to +65°C |
| Storage temperature | −40°C to +85°C |
| Dimensions | 560 mm x 260 mm x 55 mm |
| Weight | 3.4 kg (7.5 lbs) |
| Accessories included | Removable screw terminal blocks (80 sets, pre-installed, color-coded per bank: gray, black, blue, green, orange), spare terminal blocks (5 sets), labeling strips (1–80), bank isolation jumpers (installed), torque card, DIN rail end clips (10), relay identification card |
Key Selling Points & Differentiators
- 80 relays in a single slot – Five independent banks of 16 relays. Replaces five RTBAG1A boards and saves four rack slots. Highest density relay output board ever made for Mark V. Maximum channel count.
- Penta bank-to-bank isolation at 1500 VAC – Banks A, B, C, D, and E are electrically isolated from each other. Connect Bank A to 24 VDC, Bank B to 48 VDC, Bank C to 120 VAC, Bank D to 240 VAC, and Bank E to 12 VDC on the same board.
- Independent ribbon cables per bank – Use five separate output modules to control each bank independently. Ultimate flexibility.
- Removable screw terminal blocks on all 240 terminals – 80 relays x 3 terminals each = 240 field wiring points. Terminal blocks color-coded: Bank A (gray), Bank B (black), Bank C (blue), Bank D (green), Bank E (orange).
- Per-channel LED for visual status – Red LED per relay across all 80 channels.
- Flyback diode protection on every coil – Protects Mark V output modules.
- QC includes 100-cycle test on all 80 relays – Every relay cycled. All 10 bank-to-bank isolation combinations verified at 1800 VAC.
- 2-year warranty – Covers any manufacturing defect on any of the five banks.
Frequently Asked Questions (FAQ)
Q: What are the dimensions and cabinet requirements?
A: 560 mm wide x 260 mm tall x 55 mm deep. Requires custom cabinet or 24-inch rack (standard 19-inch rack is 483 mm—too narrow). We recommend a minimum 600 mm internal width. Two people required for installation.
Q: What is the maximum backplane current draw?
A: 1200 mA (1.2 A) at 24 VDC with all 80 relays energized. Most Mark V power supplies are rated 2–5 A. The RTBAG5 uses 1.2 A, leaving 0.8–3.8 A for other modules. For heavily loaded systems, use the RTBAG5E (external coil power, special order).
Q: Can I replace five RTBAG1A boards with one RTBAG5?
A: Yes, but requires extensive re-engineering. Allow 20–30 hours for re-termination and logic changes. We strongly recommend a factory site visit for first-time installations. Conversion worksheet available.
Q: What QC tests are unique to the RTBAG5?
A: All standard RTBA tests plus: 10 bank-to-bank isolation combinations (A-B, A-C, A-D, A-E, B-C, B-D, B-E, C-D, C-E, D-E) at 1800 VAC; thermal imaging at 2 A average across 80 relays; all 80 relays cycle-tested.
Q: What shipping protection?
A: Custom foam cradle for 560 mm width. Double-wall box with “EXTRA WIDE,” “HEAVY,” “FRAGILE” labels. Shock indicator. Each board ships individually. Use a pallet for shipment.

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